[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"chrome-reviews:carousel:en:12:true":3,"blog-article-best-pdf-chrome-extensions":64,"chrome-reviews:banner:en":195},[4,9,14,19,24,29,34,39,44,49,54,59],{"reviewer":5,"reviewText":8},{"name":6,"avatarURL":7},"Mary Trisha Joie Quiddam","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjW4DXKAC5hjEBkSVsldpYZ3LrgmeCsBxF2nODbcO1__N3JQe5s=s32","Very useful so I don't have to save the page as pdf and save on my ipad just to annotate.",{"reviewer":10,"reviewText":13},{"name":11,"avatarURL":12},"Yonda rass","https:\u002F\u002Flh3.googleusercontent.com\u002Fa\u002FACg8ocKc4IXT46ayRTtzMtSRfgC34A4Ip2CY6qTefY525Q-ClGR5BA=s32-mo","Saves me so much time! Highlighting web content and PDFs with Web Highlights is a breeze.",{"reviewer":15,"reviewText":18},{"name":16,"avatarURL":17},"Shariff Muhammad","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjXyRpeGFwg9hftTjz3m235ntV0pkFyVHOUIJy66JB-DxGqGNw4=s32","Highlighting key sections and adding notes directly on web articles\u002FPDFs is seamless.",{"reviewer":20,"reviewText":23},{"name":21,"avatarURL":22},"Aniki","https:\u002F\u002Flh3.googleusercontent.com\u002Fa\u002FACg8ocLCTYyCH1zT3VgVs6yCjZfaFrpmYkXVfszQTUVZHnl4m7poxSg=s32-mo","Exactly what I wanted. Easy to highlight and read your highlighted notes.",{"reviewer":25,"reviewText":28},{"name":26,"avatarURL":27},"Abdullah Yahya","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjV1uE5X-HaCZUntEH54L4UPFwMPwyk5ajrM_49uZoGHLg=s32","Good, Just wish free version had a feature to sync or export highlights.",{"reviewer":30,"reviewText":33},{"name":31,"avatarURL":32},"Dipo O","https:\u002F\u002Flh3.googleusercontent.com\u002Fa\u002FACg8ocJsrxOmCWFWyQj6J2KT7ElJCvFmXKcvqas4ddlYbFeAkcQanw=s32-mo","This app is a life saver for the course I am studying for. Couldn't recommend this more. Bravo.",{"reviewer":35,"reviewText":38},{"name":36,"avatarURL":37},"Oscar Amaya","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjX-3QX8PeguZOp58h812Uo1VIc65XPWHqhk7BYcQFdDiyWucSM=s32","Great extension! I especially love the taking-notes and adding-tags functions!",{"reviewer":40,"reviewText":43},{"name":41,"avatarURL":42},"Julia Breviglieri","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjWSRh_UlKyQ27ImmEtIn1yjlPiHWzduqqf9FrkHcKx7skvOlYI=s32","I use this extension almost everyday to study and highlight researches! Love it, 10\u002F10",{"reviewer":45,"reviewText":48},{"name":46,"avatarURL":47},"thet hmue","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjXJkG_ev_LzL8Xjm2tQ83m0dzHgCnBYc3br8fjmD0Uj19pMLYY=s32","nice and I love it. It really help me when i read research books , notes .Love it",{"reviewer":50,"reviewText":53},{"name":51,"avatarURL":52},"Vlad","https:\u002F\u002Flh3.googleusercontent.com\u002Fa\u002FACg8ocKYOOaBUFJl9Dc51_JsK-7h0_ieoQrXuV0mEa1bTAowfa6yYw=s32-mo","Probably the best tool to store notes and highlight things you read on internet.",{"reviewer":55,"reviewText":58},{"name":56,"avatarURL":57},"Mariah Kenney","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjU-7sAAz6hEiFqDwssKkaTtN2v7_BgRJQiwSw77-PrZ3oc=s32","Great tool for studying. I like that you can add notes to highlighted sections.",{"reviewer":60,"reviewText":63},{"name":61,"avatarURL":62},"Vivaan Jain","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjV1dExK7-JYkzMu9UnUlfz8xaBlq6eKUR7dKeGMBfKgjoXD208=s32","Best highlighting tool I've tried. Highly recommend and I love the variety of colors readily available :)",{"meta":65,"html":108,"authorName":109,"authorFacebookUrl":110,"authorProfileImage":111,"authorWebsite":112,"authorJobTitle":113,"authorTwitterUrl":114,"wordCount":115,"recommended":116},{"id":66,"slug":67,"type":68,"title":69,"excerpt":70,"metaTitle":71,"metaDescription":72,"canonicalUrl":72,"featureImage":73,"publishedAt":78,"createdAt":79,"updatedAt":78,"featured":80,"readingTime":81,"tags":82,"author":91,"recommendedSlugs":72,"faq":92},"3d7a95c1e264b08fa7c31de9","best-pdf-chrome-extensions","post","Top 10 Chrome PDF Extensions: The Great Comparison","Compare the 10 best PDF extensions for Chrome. We tested Web Highlights, Smallpdf, Adobe Acrobat, Kami and more on reading, editing and signing.","The 10 Best PDF Chrome Extensions (2026)",null,{"url":74,"alt":75,"caption":72,"width":76,"height":77},"\u002Fblog\u002Fcontent\u002Fimages\u002F2026\u002F08\u002Fbest-pdf-chrome-extensions.jpg","Top 10 Chrome PDF Extensions",1200,630,"2026-08-28T10:00:00.000+00:00","2026-08-28T08:30:00.000+00:00",false,23,[83,86,88],{"name":84,"slug":85},"Chrome Extension","chrome-extension",{"name":87,"slug":87},"comparison",{"name":89,"slug":90},"Tools","tools","marius-bongarts",[93,96,99,102,105],{"question":94,"answer":95},"What is the best PDF extension for Chrome?","Tooltivity ranks PDF & Web Highlighter first at 9.78\u002F10, on a 4.83\u002F5 Chrome rating from 4,946 reviews. But “best” depends on the job. It is built for reading, highlighting and research. For editing, converting or compressing, Smallpdf and Adobe Acrobat go much further, and DocHub is faster if all you need is a signature.",{"question":97,"answer":98},"Can I highlight a PDF in Chrome for free?","Yes. PDF & Web Highlighter highlights online, local and uploaded PDFs for free, with no account needed to start. Hypothesis is free too and adds group discussion, though it requires a sign-up and gives you a single highlight colour. If you would rather not install anything, our free online PDF highlighter runs in a plain browser tab.",{"question":100,"answer":101},"Which Chrome extension can I use to sign a PDF?","DocHub is the most direct option: open a PDF attachment straight from Gmail, drop in a signature and send it back, free and with no credit card upfront. Adobe Acrobat also fills and signs for free inside Chrome, and Smallpdf includes e-signing. Note that DocHub’s recent reviews have slipped to 3.64, mostly over documents failing to load.",{"question":103,"answer":104},"Is there a free alternative to Adobe Acrobat for Chrome?","Smallpdf is the closest all-rounder, covering compression, conversion, merging and e-signing on a free tier, and Xodo offers similar range for free with daily limits. Neither matches Acrobat’s depth for documents that have to hold up professionally. For reading and annotating rather than editing, PDF & Web Highlighter is the free pick.",{"question":106,"answer":107},"Do my highlights stay in the PDF when I download it?","With PDF & Web Highlighter, yes. Download the file from its viewer and every highlight is embedded as a real, standards-compliant PDF annotation — its own colour, notes as comments, the text still selectable — editable afterwards in Acrobat, Preview or Edge. Highlights already sitting in a PDF import back into your library with one click.","\u003Cp>\n  A PDF arrives, you open it in Chrome, and that’s about where the browser stops\n  helping. Chrome’s own viewer has picked up a pen and a highlighter over the\n  years, but whatever you mark stays inside that one file on that one machine.\n  Two weeks later you know you read the thing. You just can’t find the sentence.\n\u003C\u002Fp>\n\u003Cp>\n  That gap is why the extension stores are full of PDF tools. Some are editing\n  suites from names you’d recognise — convert, compress, merge, sign. Others are\n  highlighters built for people who read papers all day and want the marked\n  passages back afterwards. A few try to be both, and the quality swings hard:\n  polished and genuinely free at one end, basics behind a paywall at the other.\n\u003C\u002Fp>\n\u003Cp>\n  I wanted to know which ones hold up. In this article I compare the 10 best PDF\n  extensions on the Chrome Web Store, ranked by score. Several are also on Edge\n  and Firefox, but every number below is the Chrome listing unless I say\n  otherwise.\n\u003C\u002Fp>\n\u003Cp>\n  One disclosure before the list: Web Highlights is mine, and it ranks first\n  here. The scores come from \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n  's own review methodology, not from me — and I’ll say plainly what each of the\n  other nine does better.\n\u003C\u002Fp>\n\u003Ch3 id=\"list-of-the-best-pdf-extensions-for-chrome\">\n  List of the Best PDF Extensions for Chrome:\n\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n      >PDF & Web Highlighter + AI Summary & Notes\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\"\n      >Glasp Web Highlighter\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\"\n      >Smallpdf — Edit, Convert, Compress, & AI Summarize PDF\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\"\n      >Adobe Acrobat: PDF edit, convert, sign tools\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fkami\">Kami for Google Chrome\u003C\u002Fa>\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\"\n      >Hypothesis - Web & PDF Annotation\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\"\n      >DocHub - Sign PDF from Gmail\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\"\n      >Xodo | PDF Editor, Converter & Merger\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\"\n      >Diigo Web Collector - Capture and Annotate\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\"\n      >Weava Highlighter: PDF & Web\u003C\u002Fa\n    >\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\n  If you’d rather see everything side by side first, here’s the \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fcategory\u002Fpdf-tools\u002Fchrome\"\n    rel=\"noreferrer\"\n  >\n    comparison table of all Chrome PDF extensions\n  \u003C\u002Fa>\n  , with ratings, pricing, and features in one grid:\n\u003C\u002Fp>\n\u003Cfigure class=\"kg-card kg-image-card kg-width-full kg-card-hascaption\">\n  \u003Cimg\n    src=\"\u002Fblog\u002Fcontent\u002Fimages\u002F2026\u002F08\u002Fscreenshot-pdf-tools-comparison-extensions.webp\"\n    class=\"kg-image\"\n    alt=\"Comparison table of all Chrome PDF extensions with ratings\"\n    loading=\"lazy\"\n    width=\"4400\"\n    height=\"2144\"\n  \u002F>\n  \u003Cfigcaption>\n    \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fcategory\u002Fpdf-tools\u002Fchrome\">\n      \u003Cspan style=\"white-space: pre-wrap\"\n        >Comparison of all Chrome PDF Extensions\u003C\u002Fspan\n      >\n    \u003C\u002Fa>\n  \u003C\u002Ffigcaption>\n\u003C\u002Ffigure>\n\u003Ch2 id=\"1-pdf-web-highlighter-ai-summary-notes\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >1. PDF & Web Highlighter + AI Summary & Notes\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fweb-highlights\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"PDF and Web Highlighter showing highlights and notes in the sidebar\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Web Highlights opens the list with the strongest numbers on it: 200,000\n  downloads on the Chrome Web Store and a 4.83\u002F5 rating from 4,946 reviews, with\n  the most recent 100 sitting at 4.79. Flat, in other words — which several\n  tools further down this list cannot say. It’s also on Edge (4.6\u002F5 from 101\n  reviews across 18,069 downloads) and Firefox (4.84\u002F5 from 49 reviews, 1,840\n  downloads).\n\u003C\u002Fp>\n\u003Cp>\n  The reason a highlighter belongs in a PDF roundup is what happens after you\n  highlight. Open a PDF — a link, a local file, or one you upload into your\n  library up to 30 MB — mark what matters, add notes, and it all lands in a\n  searchable library instead of in one copy of one file. Download that PDF again\n  and every highlight comes back embedded as a real annotation: its own colour,\n  your notes as comments, the text still selectable, and Acrobat, Preview, and\n  Edge all read them as their own. Highlights that were already in a file import\n  the other direction with one click. There’s a step-by-step version in our\n  guide to \n  \u003Ca href=\"\u002Fblog\u002Fannotate-a-pdf-in-chrome\u002F\">annotating a PDF in Chrome\u003C\u002Fa>\n  .\n\u003C\u002Fp>\n\u003Cp>\n  Two things sit on top of that. The AI — summaries, chat, flashcard drafting —\n  runs on your own device through the browser’s built-in model, so a contract or\n  an unpublished draft doesn’t get uploaded anywhere to be summarised. And any\n  highlight can become a Q\u002FA flashcard, scheduled by the SuperMemo\n  spaced-repetition algorithm. That sounds like a strange thing to put in a PDF\n  tool right up until the third time you actually remember what a paper argued.\n\u003C\u002Fp>\n\u003Cp>\n  You don’t need an account to start. Install it, select text, and the highlight\n  is saved and restored the next time you open the page. If you’d rather not\n  install anything at all, our \n  \u003Ca href=\"\u002Fblog\u002Ffree-online-pdf-highlighter-highlight-any-pdf-no-install\u002F\">\n    free online PDF highlighter\n  \u003C\u002Fa>\n   runs the same read-highlight-download loop in a plain browser tab.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Website Highlighting\u003C\u002Fstrong>\n     – Highlight text on any website, restored automatically on your next\n    visit\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>PDF Highlighting\u003C\u002Fstrong>\n     – Mark up online, local, and uploaded PDFs (up to 30 MB) in the\n    built-in viewer\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Real PDF Annotations\u003C\u002Fstrong>\n     – Download a PDF with your highlights embedded as standards-compliant\n    annotations that Acrobat and Preview can edit\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Annotation Import\u003C\u002Fstrong>\n     – Highlights already in a file, from Acrobat or Preview, come back in\n    with one click\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>AI Summary\u003C\u002Fstrong>\n     – Summarise a page, a PDF, or your own highlights on your device\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>AI Chat\u003C\u002Fstrong>\n     – The on-device model reads the whole page, so you can ask questions\n    about a website, PDF, or YouTube video\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Multiple Colors\u003C\u002Fstrong>\n     – Use different colors to separate arguments, quotes, and to-dos\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Note-Taking\u003C\u002Fstrong>\n     – Add a note to a highlight, or write a page note about the whole\n    document with full formatting\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Reader Mode\u003C\u002Fstrong>\n     – Read a PDF as clean text, with headings, lists, and two-column\n    papers handled properly\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Tagging\u003C\u002Fstrong>\n     – Organize highlights and notes with tags across the whole library\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Collections (Folders)\u003C\u002Fstrong>\n     – Keep documents in a nested folder tree with drag & drop,\n    alongside tags\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Cross-Device Sync\u003C\u002Fstrong>\n     – Sync your library between browsers and machines via the cloud\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Export Options\u003C\u002Fstrong>\n     – One-click export to Notion and Capacities on the Ultimate plan, plus\n    copy as Markdown for Obsidian, or export to an HTML or PDF file\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Reminders\u003C\u002Fstrong>\n     – Snooze a document and get an email when it’s time to read it\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Flashcards & Spaced Repetition\u003C\u002Fstrong>\n     – Turn a highlight into a Q\u002FA card and review it with the SuperMemo\n    algorithm, with the AI drafting whole decks on your device\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Excellent free version\u003C\u002Fli>\n  \u003Cli>No account required to start\u003C\u002Fli>\n  \u003Cli>Highlights download as real, editable PDF annotations\u003C\u002Fli>\n  \u003Cli>AI summaries and chat run on your own device\u003C\u002Fli>\n  \u003Cli>Spaced-repetition flashcards from your highlights\u003C\u002Fli>\n  \u003Cli>Collections, tags & notes\u003C\u002Fli>\n  \u003Cli>Chrome, Edge and Firefox, with a web app to match\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Cloud sync is free for 7 days, then part of a paid plan\u003C\u002Fli>\n  \u003Cli>No native mobile app yet — the web app installs as a PWA\u003C\u002Fli>\n  \u003Cli>No shared team workspace; you share single pages by public link\u003C\u002Fli>\n  \u003Cli>\n    The on-device AI wants a one-time model download and a lot of free disk\n    space as headroom\n  \u003C\u002Fli>\n  \u003Cli>\n    Not a PDF editor — no converting, compressing, page reordering, or e-signing\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Web Highlights is built for people who read PDFs in order to use them later:\n  students working through a reading list, researchers pulling quotes out of\n  journal articles, anyone whose job involves finding the one clause that\n  matters in a forty-page document. The library, the tags, and the search are\n  the point — the highlighting is just how things get in there.\n\u003C\u002Fp>\n\u003Cp>\n  It’s a poor fit if your PDF problems are administrative. Filling a tax form,\n  compressing a scan under an email limit, signing a lease, converting a deck to\n  Word — none of that is here, and four tools further down this list do it\n  better. Pick Web Highlights for reading and research; pair it with one of them\n  for the paperwork.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Among the highlighters, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\">Glasp\u003C\u002Fa>\n   has the bigger community and lets you pick between ChatGPT, Claude, and\n  Gemini, where our AI is whatever your browser ships; the trade is that Glasp’s\n  free tier publishes your highlights by default. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\">Hypothesis\u003C\u002Fa>\n   beats us outright on group reading — threaded replies on a shared\n  document are something we simply don’t do. Against \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\">Weava\u003C\u002Fa>\n   and \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\">Diigo\u003C\u002Fa>\n  , both older research collectors, the gap is upkeep more than ambition. And\n  next to \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\">Adobe Acrobat\u003C\u002Fa>\n   or \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\">Smallpdf\u003C\u002Fa>\n  , we’re not in the same category at all: they edit documents, we read them.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweb-highlights-vs-glasp-web-highlighter\"\n  >\n    PDF & Web Highlighter vs Glasp\n  \u003C\u002Fa>\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweb-highlights-vs-weava\">\n    PDF & Web Highlighter vs Weava\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweb-highlights-vs-hypothesis\"\n  >\n    PDF & Web Highlighter vs Hypothesis\n  \u003C\u002Fa>\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Web Highlights has 200,000 downloads on Chrome with a 4.83\u002F5 average from\n  4,946 reviews, holding 4.79 across the most recent 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave PDF & Web Highlighter a score of \n  \u003Cstrong>9.78\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Cfigure class=\"kg-card kg-bookmark-card\">\n  \u003Ca class=\"kg-bookmark-container\" href=\"https:\u002F\u002Fweb-highlights.com\u002Finstall\">\n    \u003Cdiv class=\"kg-bookmark-content\">\n      \u003Cdiv class=\"kg-bookmark-title\">\n        Install Web Highlights on your browser\n      \u003C\u002Fdiv>\n      \u003Cdiv class=\"kg-bookmark-description\">\n        Install our browser extension to highlight & annotate Websites &\n        PDFs – free, easy to use, no sign-up required.\n      \u003C\u002Fdiv>\n      \u003Cdiv class=\"kg-bookmark-metadata\">\n        \u003Cimg\n          class=\"kg-bookmark-icon\"\n          src=\"\u002Fblog\u002Fcontent\u002Fimages\u002Ficon\u002Ficon-512x512-15.webp\"\n          alt=\"\"\n        \u002F>\n        \u003Cspan class=\"kg-bookmark-author\"\n          >Install Web Highlights on your browser\u003C\u002Fspan\n        >\n      \u003C\u002Fdiv>\n    \u003C\u002Fdiv>\n    \u003Cdiv class=\"kg-bookmark-thumbnail\">\n      \u003Cimg\n        src=\"\u002Fblog\u002Fcontent\u002Fimages\u002Fthumbnail\u002Fwh-thumbnail-13.webp\"\n        alt=\"\"\n        onerror=\"this.style.display = 'none'\"\n      \u002F>\n    \u003C\u002Fdiv>\n  \u003C\u002Fa>\n\u003C\u002Ffigure>\n\u003Chr \u002F>\n\u003Ch2 id=\"2-glasp-web-highlighter\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\"\n    >2. Glasp Web Highlighter\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fglasp-web-highlighter\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Glasp Web Highlighter sidebar with saved highlights\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Glasp treats your notes as something to share rather than something to keep.\n  It has 500,000 downloads on the Chrome Web Store and a 4.46\u002F5 rating from 978\n  reviews, though the recent trend has softened: the last 100 reviews average\n  4.22, a step below the long-run number.\n\u003C\u002Fp>\n\u003Cp>\n  What you get is a social layer on top of web, PDF, and YouTube highlighting.\n  Summarise what you saved with ChatGPT, Claude, or Gemini, push it to Obsidian,\n  Notion, or Roam, pull in your Kindle highlights, and browse what other readers\n  have marked on the same article. It’s a real second-brain system, and the\n  model choice alone is something no other tool here offers. The catch is the\n  default: on the free plan your highlights are public, and private notes are a\n  paid feature. Worth knowing before you highlight a work document.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-1\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Multi-Platform Highlighting\u003C\u002Fstrong>\n     – Highlight websites, PDFs, and YouTube videos in several colors\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>AI-Powered Summaries\u003C\u002Fstrong>\n     – Generate summaries with ChatGPT, Claude, or Gemini\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Social Learning Network\u003C\u002Fstrong>\n     – See what other readers highlighted and follow people whose reading\n    you like\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Cross-Platform Sync\u003C\u002Fstrong>\n     – Your highlights follow you across devices automatically\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Export Integration\u003C\u002Fstrong>\n     – Send highlights to Obsidian, Notion, Roam Research, and other note\n    apps\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Kindle Integration\u003C\u002Fstrong>\n     – Import and sync the highlights from your Kindle books\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-1\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Broad feature set for the price\u003C\u002Fli>\n  \u003Cli>Large, genuinely active community\u003C\u002Fli>\n  \u003Cli>Choice of three AI models\u003C\u002Fli>\n  \u003Cli>Flexible exports to note apps\u003C\u002Fli>\n  \u003Cli>Kindle highlights come along\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Free tier makes your highlights public\u003C\u002Fli>\n  \u003Cli>Premium plans are steep for casual use\u003C\u002Fli>\n  \u003Cli>Recent reviews are drifting down\u003C\u002Fli>\n  \u003Cli>Occasional technical hiccups\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-1\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Glasp suits people who learn in the open — creators, curators, students who\n  like seeing which passages everyone else stopped at. If discovery is part of\n  how you read, nothing else in this comparison gives you that.\n\u003C\u002Fp>\n\u003Cp>\n  It’s also the pick if you already have a note system you love. The exports to\n  Obsidian, Notion, and Roam are the most flexible here, and the Kindle import\n  closes a gap most highlighters ignore. Just switch your default to private\n  early if your reading isn’t meant for an audience.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-1\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Glasp and \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n   pull in opposite directions: Glasp is social, cloud-AI, account-first,\n  while we’re private, on-device, and usable without signing up. Against \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\">Weava\u003C\u002Fa>\n  , Glasp wins on features, community, and maintenance, though both want an\n  account before you highlight anything. And where \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\">Diigo\u003C\u002Fa>\n   is a research collector from an earlier internet, Glasp is the modern\n  answer to the same idea.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-1\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fglasp-web-highlighter-vs-web-highlights\"\n  >\n    Glasp vs PDF & Web Highlighter\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fglasp-web-highlighter-vs-weava\"\n  >\n    Glasp vs Weava\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fglasp-web-highlighter-vs-diigo-web-collector\"\n  >\n    Glasp vs Diigo\n  \u003C\u002Fa>\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-1\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Glasp has 500,000 downloads on Chrome with a 4.46\u002F5 rating from 978 reviews,\n  easing to 4.22 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Glasp a score of \n  \u003Cstrong>8.88\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"3-smallpdf-edit-convert-compress-ai-summarize-pdf\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\"\n    >3. Smallpdf — Edit, Convert, Compress, & AI Summarize PDF\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fsmallpdf\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Smallpdf toolbar popup listing PDF tools\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  If the first two entries are about reading, Smallpdf is about doing. It packs\n  a desktop-grade PDF suite into one toolbar button, and the store agrees: 2\n  million downloads and a 4.64\u002F5 rating from 2,998 reviews, with the last 100 at\n  4.36 — cooler than the all-time average, but still the second-highest recent\n  score in this comparison.\n\u003C\u002Fp>\n\u003Cp>\n  Breadth is the whole pitch. Roughly twenty tools sit behind that button:\n  compress, convert to and from Word, Excel, PowerPoint and JPG, merge, split,\n  rotate, e-sign, and an AI assistant that summarises or answers questions about\n  a document. The basics are free and often don’t even need an account.\n  Compression is the one people mention most — a bloated scan comes back a\n  fraction of its size without any visible damage. The heavier editing hands you\n  over to the Smallpdf website and, before long, to a Pro subscription.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-2\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>PDF Compression\u003C\u002Fstrong>\n     – Shrink oversized files enough to clear an email attachment limit\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Convert To and From PDF\u003C\u002Fstrong>\n     – Word, Excel, PowerPoint and JPG in both directions\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Merge & Split\u003C\u002Fstrong>\n     – Combine a pile of files or pull one document apart, no account\n    needed for the basics\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Edit PDFs\u003C\u002Fstrong>\n     – Drop text, images, shapes, and annotations onto a page\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>E-Sign Documents\u003C\u002Fstrong>\n     – Draw or type a signature and place it on a contract\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Organize Pages\u003C\u002Fstrong>\n     – Rotate, reorder, and delete pages to tidy up a scan\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>AI PDF Assistant\u003C\u002Fstrong>\n     – Summarise a long document or ask it questions instead of reading end\n    to end\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>One-Click Access\u003C\u002Fstrong>\n     – Every tool in a single popup, nothing to install\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-2\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Huge all-in-one toolkit\u003C\u002Fli>\n  \u003Cli>Compression that actually works\u003C\u002Fli>\n  \u003Cli>Free and account-free for the basics\u003C\u002Fli>\n  \u003Cli>Almost no learning curve\u003C\u002Fli>\n  \u003Cli>Handy e-signing and AI summaries\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Real editing sits behind Pro\u003C\u002Fli>\n  \u003Cli>Free tier has tightened over time\u003C\u002Fli>\n  \u003Cli>Recurring billing and cancellation complaints\u003C\u002Fli>\n  \u003Cli>Editing bounces you out to the website\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-2\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Smallpdf is for the person whose PDF work is a rotating list of chores:\n  compress a scan today, convert a deck tomorrow, sign a contract next week. It\n  rewards range rather than depth, and it’s fast enough that you stop thinking\n  about it.\n\u003C\u002Fp>\n\u003Cp>\n  It’s especially good for occasional users who mostly need free compression and\n  conversion and don’t want desktop software. If PDFs become a daily job, watch\n  where the free line now sits, and set a calendar reminder before any Pro trial\n  renews — that’s what most of the angry reviews are about.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-2\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Smallpdf sits between the heavyweights and the light tools. It undercuts \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\">Adobe Acrobat\u003C\u002Fa>\n   on price and folds more into its free allowance, though Acrobat goes\n  deeper where documents have to hold up professionally. Against \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\">Xodo\u003C\u002Fa>\n  , Smallpdf is the more polished and more reliable of the two. For signing\n  alone, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\">DocHub\u003C\u002Fa>\n   covers the whole loop without a subscription. And for reading and\n  annotating rather than processing, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n   keeps your notes in a library instead of handing you a modified file.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-2\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fsmallpdf-vs-adobe-acrobat\">\n    Smallpdf vs Adobe Acrobat\n  \u003C\u002Fa>\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fsmallpdf-vs-xodo\"\n    >Smallpdf vs Xodo\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fsmallpdf-vs-dochub\"\n    >Smallpdf vs DocHub\u003C\u002Fa\n  >\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-2\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Smallpdf has 2,000,000 downloads on Chrome with a 4.64\u002F5 rating from 2,998\n  reviews, holding 4.36 over the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Smallpdf a score of \n  \u003Cstrong>8.73\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"4-adobe-acrobat-pdf-edit-convert-sign-tools\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\"\n    >4. Adobe Acrobat: PDF edit, convert, sign tools\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fadobe-acrobat\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Adobe Acrobat extension opening a PDF in Adobe’s viewer inside Chrome\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Adobe invented the format, and the install count reflects it: 307 million\n  downloads on the Chrome Web Store with a 4.40\u002F5 rating from 62,815 reviews.\n  Recent sentiment runs a little below that at 4.18 across the last 100 — not a\n  collapse, and worth reading in context: the recurring complaints are about\n  pricing and upgrade prompts rather than how Acrobat handles a PDF.\n\u003C\u002Fp>\n\u003Cp>\n  Install it and Chrome hands PDFs to Adobe’s own viewer, where reading,\n  form-filling, commenting, and signing are free. Converting, compressing,\n  combining, and editing actual text belong to an Acrobat Pro subscription. As a\n  free reader and signer it’s dependable in a way nothing else here quite\n  matches; as a full editor it wants your card. If the subscription is the part\n  you’re stuck on, we keep a roundup of \n  \u003Ca href=\"\u002Fblog\u002Fbest-adobe-pdf-alternatives\u002F\"\n    >the best Adobe PDF alternatives\u003C\u002Fa\n  >\n   that covers what you give up by leaving.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-3\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>View & Read PDFs\u003C\u002Fstrong>\n     – Open any PDF in Adobe’s viewer inside Chrome\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Fill & Sign\u003C\u002Fstrong>\n     – Complete forms and add a recognised e-signature, free\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Comment & Annotate\u003C\u002Fstrong>\n     – Sticky notes, highlights, and text markup for review rounds\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Convert To & From PDF\u003C\u002Fstrong>\n     – Web pages, images, and Office files in and out (Pro)\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Compress & Reduce\u003C\u002Fstrong>\n     – Get bulky files under attachment limits (Pro)\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Combine & Organize\u003C\u002Fstrong>\n     – Merge files, then reorder, insert, or delete pages (Pro)\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Edit Text & Images\u003C\u002Fstrong>\n     – Change wording and swap images in the document itself (Pro)\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>AI Assistant\u003C\u002Fstrong>\n     – Ask questions about a document and generate summaries (paid add-on)\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-3\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>The most complete PDF toolkit there is\u003C\u002Fli>\n  \u003Cli>Free viewing, filling, signing, commenting\u003C\u002Fli>\n  \u003Cli>Signatures nobody will question\u003C\u002Fli>\n  \u003Cli>Handles files other viewers choke on\u003C\u002Fli>\n  \u003Cli>Runs inside Chrome, no desktop install\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Real editing locked behind Pro\u003C\u002Fli>\n  \u003Cli>Pro subscription is expensive\u003C\u002Fli>\n  \u003Cli>Constant upgrade prompts\u003C\u002Fli>\n  \u003Cli>The AI assistant is pushy\u003C\u002Fli>\n  \u003Cli>Can slow Chrome down noticeably\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-3\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Acrobat is the safe default when the document matters — legal, admin, finance,\n  anything where a signature has to be trusted and the layout has to survive\n  whoever opens it next. If PDFs are the medium of your job rather than a\n  nuisance in it, Pro pays for itself.\n\u003C\u002Fp>\n\u003Cp>\n  It also works fine for light users who stay inside the free basics and are\n  willing to dismiss the upgrade prompts. What it isn’t is a good deal for\n  someone who edits one line of text a month. That’s the case where the recent\n  reviews get sharp, and it’s a fair complaint.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-3\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Nothing here matches Acrobat for depth, and nothing here charges like it\n  either. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\">Smallpdf\u003C\u002Fa>\n   and \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\">Xodo\u003C\u002Fa>\n   fold editing, conversion, and compression into more generous free tiers,\n  so lighter users usually get further without paying. For signing\n  specifically, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\">DocHub\u003C\u002Fa>\n   closes the loop from Gmail with no subscription at all. Acrobat wins on\n  trust and completeness; everything else wins on cost and immediacy.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-3\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fadobe-acrobat-vs-smallpdf\">\n    Adobe Acrobat vs Smallpdf\n  \u003C\u002Fa>\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fadobe-acrobat-vs-xodo\"\n    >Adobe Acrobat vs Xodo\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fadobe-acrobat-vs-dochub\"\n    >Adobe Acrobat vs DocHub\u003C\u002Fa\n  >\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-3\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Adobe Acrobat has 307,000,000 downloads on Chrome with a 4.40\u002F5 rating from\n  62,815 reviews, and 4.18 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Adobe Acrobat a score of \n  \u003Cstrong>8.50\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"5-kami-for-google-chrome\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fkami\">5. Kami for Google Chrome\u003C\u002Fa>\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fkami\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Kami annotation tools open on a worksheet PDF\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Kami is close to synonymous with PDF annotation in schools, and the reach\n  shows: 6 million downloads and a 4.56\u002F5 rating from 8,401 reviews. Then look\n  at the recent window. The last 100 reviews average 3.87, and that gap between\n  the all-time score and the current one is the largest of any tool in the top\n  half of this list. It isn’t noise — it lines up with a paywall push that moved\n  features longtime users had for free.\n\u003C\u002Fp>\n\u003Cp>\n  What it does, it does thoroughly. Any document becomes a shared workspace:\n  highlight, draw, and drop text, voice, or video comments onto a PDF, split and\n  merge files, run OCR on a scanned worksheet, and annotate together in real\n  time through Google Classroom. For teacher feedback specifically, the voice\n  and video comments are something no other tool in this comparison offers, and\n  they’re the reason schools stayed.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-4\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>PDF Annotation\u003C\u002Fstrong>\n     – Highlight, underline, strike through, and draw freehand, then save\n    the markup back into the file\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Voice & Video Comments\u003C\u002Fstrong>\n     – Leave feedback as audio or a short clip instead of typing it\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Real-Time Collaboration\u003C\u002Fstrong>\n     – Several people annotate the same document at once\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Split & Merge PDFs\u003C\u002Fstrong>\n     – Break up or combine documents without leaving the browser\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>OCR Text Recognition\u003C\u002Fstrong>\n     – Turn scanned worksheets into selectable, searchable text\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Google & Microsoft Integration\u003C\u002Fstrong>\n     – Classroom, Drive, and OneDrive with auto-save\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Drawing & Handwriting Tools\u003C\u002Fstrong>\n     – Pen, shapes, and equation tools tuned for maths and touchscreens\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Reading Support\u003C\u002Fstrong>\n     – Dictionary and read-aloud helpers aimed at classroom accessibility\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-4\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Deepest PDF markup toolkit here\u003C\u002Fli>\n  \u003Cli>Voice and video feedback\u003C\u002Fli>\n  \u003Cli>Real-time classroom collaboration\u003C\u002Fli>\n  \u003Cli>Google Classroom integration that works\u003C\u002Fli>\n  \u003Cli>Split, merge, and OCR built in\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Key features moved behind a paywall\u003C\u002Fli>\n  \u003Cli>Sign-in required before anything happens\u003C\u002Fli>\n  \u003Cli>Highlighting can be unreliable\u003C\u002Fli>\n  \u003Cli>Support is slow to respond\u003C\u002Fli>\n  \u003Cli>Recent ratings have fallen hard, from 4.56 all-time to 3.87\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-4\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Kami is for teachers, and it’s at its best in a classroom already running on\n  Google Classroom and Drive. Marking up worksheets together and leaving rich\n  feedback is a job it does better than anything else in this comparison.\n\u003C\u002Fp>\n\u003Cp>\n  Individuals who just want to annotate the occasional PDF will feel every bit\n  of friction it was designed to carry — the sign-in, the institutional\n  onboarding, the upgrade nudges. And given where the recent reviews sit, it’s\n  worth checking what your school’s plan actually covers before building a term\n  around it.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-4\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\">Hypothesis\u003C\u002Fa>\n   is the other education favourite, but they split by purpose: Hypothesis\n  is built for scholarly discussion on the open web and costs nothing, while\n  Kami is a heavier markup suite for handouts and homework. For solo\n  annotation, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n   is lighter and needs no account, but has no live collaboration and no\n  voice comments. And for editing a document rather than marking it up, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\">Adobe Acrobat\u003C\u002Fa>\n   goes further than Kami tries to. If you’re weighing methods rather than\n  brands, our guide on \n  \u003Ca href=\"\u002Fblog\u002Fhow-to-annotate-a-pdf\u002F\">how to annotate a PDF\u003C\u002Fa>\n   walks through the options.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-4\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fkami-vs-hypothesis\"\n    >Kami vs Hypothesis\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fkami-vs-web-highlights\">\n    Kami vs PDF & Web Highlighter\n  \u003C\u002Fa>\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fkami-vs-adobe-acrobat\"\n    >Kami vs Adobe Acrobat\u003C\u002Fa\n  >\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-4\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Kami has 6,000,000 downloads on Chrome and a 4.56\u002F5 all-time rating from 8,401\n  reviews, though recent sentiment has dropped sharply to 3.87 across the last\n  100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Kami a score of \n  \u003Cstrong>8.23\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fkami\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"6-hypothesis-web-pdf-annotation\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\"\n    >6. Hypothesis - Web & PDF Annotation\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fhypothesis\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Hypothesis annotation sidebar with a threaded reply on a document\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Hypothesis is the quiet outlier: free, open source, run by a nonprofit, with\n  no paid tier waiting behind a button. It has 200,000 downloads and a 4.12\u002F5\n  rating from 223 reviews, and the number barely moves — 4.05 across the last\n  100, which in this comparison counts as remarkable stability.\n\u003C\u002Fp>\n\u003Cp>\n  What it does is lay a shared annotation layer over the web. Highlight and\n  annotate pages, PDFs, and EPUBs, keep the notes private, publish them, or put\n  them in a group; reply to anyone else’s note and hold the whole discussion on\n  top of the text. That’s the part we can’t match, and it’s why the tool is so\n  entrenched in universities. If you’re a student choosing between the two, I\n  wrote a longer \n  \u003Ca href=\"\u002Fblog\u002Fweb-highlights-vs-hypothesis-for-students\u002F\">\n    Web Highlights vs Hypothesis comparison\n  \u003C\u002Fa>\n   that goes through it properly.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-5\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Web & PDF Annotation\u003C\u002Fstrong>\n     – Highlight web pages, PDFs, and EPUBs from one extension\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Private, Public & Group Notes\u003C\u002Fstrong>\n     – Choose per annotation who gets to see it\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Collaborative Groups\u003C\u002Fstrong>\n     – Spin up a group for a class or research team and read the same\n    document together\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Threaded Replies\u003C\u002Fstrong>\n     – Discuss a passage in a thread anchored to that passage\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Tags & Full-Text Search\u003C\u002Fstrong>\n     – Tag notes and search your whole annotation history\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Hide\u002FShow Toggle\u003C\u002Fstrong>\n     – Clear every highlight off the page for a clean read, then bring them\n    back\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Persistent PDF Notes\u003C\u002Fstrong>\n     – Annotations stay attached to a PDF, so the same file is recognised\n    later\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Open API\u003C\u002Fstrong>\n     – Pull your annotations into Obsidian, Readwise, or Logseq\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-5\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Free, open source, nonprofit\u003C\u002Fli>\n  \u003Cli>Best group annotation in this comparison\u003C\u002Fli>\n  \u003Cli>Private, public, or group notes per annotation\u003C\u002Fli>\n  \u003Cli>Steady ratings, no paywall creep\u003C\u002Fli>\n  \u003Cli>Open API and real integrations\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Account required before you highlight anything\u003C\u002Fli>\n  \u003Cli>Frequent logouts and dropped sessions\u003C\u002Fli>\n  \u003Cli>Only one highlight color\u003C\u002Fli>\n  \u003Cli>Interface shows its age\u003C\u002Fli>\n  \u003Cli>Public-by-default trips people up\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-5\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Hypothesis is for people who read together — seminar groups, research teams,\n  classes working through the same paper. If the point of annotating is that\n  someone else will answer, this is the tool, and it costs nothing.\n\u003C\u002Fp>\n\u003Cp>\n  It also appeals to anyone who wants open-source software backed by an\n  organisation with no reason to monetise their reading. Set your default to\n  private on day one, and make peace with a single highlight colour.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-5\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Against \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fkami\">Kami\u003C\u002Fa>\n  , Hypothesis is free and open where Kami is institutional and paid, but Kami’s\n  PDF markup is far richer. Compared to \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n  , it trades our colors, on-device AI, and no-account start for something we\n  don’t have at all: a conversation on the page. And like \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\">Glasp\u003C\u002Fa>\n  , it puts a shared layer at the centre — the difference being that Hypothesis\n  is nonprofit rather than community-and-AI driven.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-5\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fhypothesis-vs-kami\"\n    >Hypothesis vs Kami\u003C\u002Fa\n  >\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fhypothesis-vs-web-highlights\"\n  >\n    Hypothesis vs PDF & Web Highlighter\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fhypothesis-vs-glasp-web-highlighter\"\n  >\n    Hypothesis vs Glasp\n  \u003C\u002Fa>\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-5\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Hypothesis has 200,000 downloads on Chrome with a 4.12\u002F5 rating from 223\n  reviews and a steady 4.05 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Hypothesis a score of \n  \u003Cstrong>8.15\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"7-dochub-sign-pdf-from-gmail\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\"\n    >7. DocHub - Sign PDF from Gmail\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fdochub\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"DocHub signing a PDF attachment opened from Gmail\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  DocHub has a narrower job than anything else here: sign a PDF without leaving\n  Gmail. It has 200,000 downloads and a 4.37\u002F5 rating from 318 reviews, but the\n  recent direction is wrong — 3.64 across the last 100, a clear slide from the\n  all-time figure.\n\u003C\u002Fp>\n\u003Cp>\n  The loop is genuinely quick. Pull a form out of a Gmail attachment, drop in\n  your signature, send it back; no printing, no scanning, no downloading first.\n  You can also add text, white out mistakes, fill fields, reorder pages, and\n  save to Google Drive, and multi-signer flows with reminders work for the\n  paperwork that needs three people. The complaints behind that 3.64 are almost\n  all about the same thing: documents that don’t load. When it works it’s the\n  fastest signing tool in this comparison, and that qualifier is doing real\n  work.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-6\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Sign Straight From Gmail\u003C\u002Fstrong>\n     – An “Open with DocHub” button on PDF attachments, no download step\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>E-Signatures\u003C\u002Fstrong>\n     – Draw, type, or upload a signature — you can even make one on your\n    phone\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>In-Browser Editing\u003C\u002Fstrong>\n     – Add text and images, highlight, or white out a mistake\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Fillable Forms\u003C\u002Fstrong>\n     – Complete PDF form fields on screen instead of by hand\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Google Drive Integration\u003C\u002Fstrong>\n     – Import from Drive and save the finished file straight back\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Page Management\u003C\u002Fstrong>\n     – Reorder, rotate, delete, and merge pages before sending\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Multi-Signer Workflows\u003C\u002Fstrong>\n     – Route a document to several signers with autosave and reminders\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Templates\u003C\u002Fstrong>\n     – Save recurring paperwork so it doesn’t start from scratch each time\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-6\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Signs PDFs straight from Gmail\u003C\u002Fli>\n  \u003Cli>Free tier you can actually use\u003C\u002Fli>\n  \u003Cli>No credit card required upfront\u003C\u002Fli>\n  \u003Cli>Drive import and export\u003C\u002Fli>\n  \u003Cli>Multi-signer routing with reminders\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Blank screens and documents that won’t load\u003C\u002Fli>\n  \u003Cli>Free plan capped per month\u003C\u002Fli>\n  \u003Cli>The Gmail flow sometimes breaks\u003C\u002Fli>\n  \u003Cli>Onboarding is clunky\u003C\u002Fli>\n  \u003Cli>Recent ratings down to 3.64\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-6\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  DocHub fits anyone whose PDF life is mostly signatures — agents, freelancers,\n  small-business owners, students returning a form. If you already live in Gmail\n  and Drive, the workflow feels like it was built for your inbox specifically.\n\u003C\u002Fp>\n\u003Cp>\n  It’s best for occasional signers who don’t want to hand over a card for a free\n  tier. Heavy daily volume hits the monthly cap, and given the load failures in\n  recent reviews, keep a second option installed for the day a contract refuses\n  to open.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-6\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  Where \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\">Adobe Acrobat\u003C\u002Fa>\n   leans on a heavier app and a Pro plan, DocHub keeps sign-and-return\n  inside the inbox for free. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\">Smallpdf\u003C\u002Fa>\n   routes you to a web dashboard for the same job, so DocHub is the more\n  immediate of the two for pure signing, while \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\">Xodo\u003C\u002Fa>\n   covers more editing ground without the Gmail integration. For reading\n  and annotating a document rather than executing it, none of these are the\n  answer.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-6\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdochub-vs-adobe-acrobat\">\n    DocHub vs Adobe Acrobat\n  \u003C\u002Fa>\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdochub-vs-smallpdf\"\n    >DocHub vs Smallpdf\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdochub-vs-xodo\"\n    >DocHub vs Xodo\u003C\u002Fa\n  >\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-6\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  DocHub has 200,000 downloads on Chrome with a 4.37\u002F5 rating from 318 reviews,\n  though recent reviews have fallen to 3.64 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave DocHub a score of \n  \u003Cstrong>8.02\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"8-xodo-pdf-editor-converter-merger\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\"\n    >8. Xodo | PDF Editor, Converter & Merger\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fxodo\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Xodo PDF tools menu with convert, merge and compress options\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Xodo is the smallest listing in this comparison and the one with the least\n  evidence behind it: 30,000 downloads and a 3.85\u002F5 rating drawn from just 34\n  reviews, with the recent window at 3.64. With a pool that small, those two\n  numbers are mostly the same reviews counted twice, so I leaned on hands-on\n  testing here more than on the star count.\n\u003C\u002Fp>\n\u003Cp>\n  On paper it covers a lot: edit and annotate, convert to and from Word,\n  PowerPoint, Excel and JPG, compress, merge, crop, redact, split, rotate, and\n  sign — free, with daily limits. In practice opinion splits hard. Some people\n  use it happily for forms and merges. Others find it behaves more like a\n  bookmark to Xodo’s website than an extension, which is the single most common\n  complaint and a fair description of what happens with the heavier tools.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-7\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Edit & Annotate\u003C\u002Fstrong>\n     – Write on PDFs, add text boxes, highlight, and underline\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Convert\u003C\u002Fstrong>\n     – PDFs to and from Word, PowerPoint, Excel, and JPG\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Merge & Combine\u003C\u002Fstrong>\n     – Join several PDFs or scans into one file\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Page Management\u003C\u002Fstrong>\n     – Crop, split, rotate, reorder, and delete pages\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Fill & Sign\u003C\u002Fstrong>\n     – Complete forms and add a hand-drawn signature\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Compress\u003C\u002Fstrong>\n     – Shrink oversized PDFs for email\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Redact\u003C\u002Fstrong>\n     – Remove sensitive text before sharing\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Fast Viewing Engine\u003C\u002Fstrong>\n     – Open and scroll large documents quickly, the thing Xodo has always\n    been good at\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-7\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Core PDF tools genuinely free\u003C\u002Fli>\n  \u003Cli>Fill and sign forms easily\u003C\u002Fli>\n  \u003Cli>Merge, split, and delete pages\u003C\u002Fli>\n  \u003Cli>Fast, smooth viewing of big files\u003C\u002Fli>\n  \u003Cli>Decent PDF-to-Word conversion\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Free tier has daily limits\u003C\u002Fli>\n  \u003Cli>Often behaves like a bookmark to the website\u003C\u002Fli>\n  \u003Cli>Occasional trouble opening PDFs\u003C\u002Fli>\n  \u003Cli>Editing controls frustrate\u003C\u002Fli>\n  \u003Cli>Tiny review pool, so ratings mean little\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-7\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Xodo suits people who want a broad free toolkit for occasional jobs: filling a\n  form, merging scanned pages, converting a document to Word. For light,\n  irregular work it’s a reasonable thing to keep one click away.\n\u003C\u002Fp>\n\u003Cp>\n  Go in with the right expectation and you’ll get on with it fine — this is a\n  launcher plus a toolkit rather than a slick in-page editor, and back-to-back\n  use will hit the daily limits. If PDF processing is a daily job, Smallpdf is\n  worth the upgrade instead.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-7\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\">Smallpdf\u003C\u002Fa>\n   is the cleaner, more reliable version of the same conversion-and-\n  compression toolkit, with roughly ninety times the reviews behind it. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\">Adobe Acrobat\u003C\u002Fa>\n   goes much deeper for serious editing. For signing from your inbox, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\">DocHub\u003C\u002Fa>\n   is the more focused choice. Xodo’s argument is range at no cost — and\n  that argument holds as long as the hand-off to its website doesn’t get in your\n  way.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-7\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fxodo-vs-smallpdf\"\n    >Xodo vs Smallpdf\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fxodo-vs-adobe-acrobat\"\n    >Xodo vs Adobe Acrobat\u003C\u002Fa\n  >\n   • \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fxodo-vs-dochub\"\n    >Xodo vs DocHub\u003C\u002Fa\n  >\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-7\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Xodo has 30,000 downloads on Chrome with a 3.85\u002F5 rating from just 34 reviews,\n  and 3.64 across the most recent window. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Xodo a score of \n  \u003Cstrong>7.65\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"9-diigo-web-collector-capture-and-annotate\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\"\n    >9. Diigo Web Collector - Capture and Annotate\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fdiigo-web-collector\u002Fimages\u002Fgallery-image-1.webp\"\n    class=\"kg-image\"\n    alt=\"Diigo Web Collector toolbar with highlight and annotate options\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Diigo has been collecting the web for well over a decade — bookmarks,\n  highlights, screenshots, notes, all in one library. It has 100,000 downloads\n  and a 4.60\u002F5 all-time rating from 2,323 reviews. The recent picture is much\n  darker: 3.50 across the last 100, more than a full star below the average that\n  reputation was built on.\n\u003C\u002Fp>\n\u003Cp>\n  The core still works. Highlights come back on refresh, notes attach cleanly,\n  everything syncs. What’s aged is everything around that — a dated interface,\n  four highlight colours, a link-creation feature that misfires, and a steady\n  run of reliability complaints. It’s a tool that stopped being maintained at\n  the pace its users needed, and the recent ratings are the receipt.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-8\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Highlighting\u003C\u002Fstrong>\n     – Works reliably, and highlights are recreated on refresh\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Notes\u003C\u002Fstrong>\n     – Attach notes to any highlight\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Link Creation\u003C\u002Fstrong>\n     – Link straight to a highlight, though this misfires often\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Sidebar Outliner\u003C\u002Fstrong>\n     – Simple layout, but it takes a while to understand\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Syncing\u003C\u002Fstrong>\n     – Highlights follow you across devices\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-8\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Highlights are recreated on refresh\u003C\u002Fli>\n  \u003Cli>Notes can be added to highlights\u003C\u002Fli>\n  \u003Cli>Cross-device syncing\u003C\u002Fli>\n  \u003Cli>Tag-based library that scales\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Outdated design\u003C\u002Fli>\n  \u003Cli>Limited to 4 highlight colors\u003C\u002Fli>\n  \u003Cli>Link creation is unreliable\u003C\u002Fli>\n  \u003Cli>Sidebar is limited\u003C\u002Fli>\n  \u003Cli>Recent ratings down to 3.50 from a 4.60 average\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-8\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Diigo makes sense if you’re already in it. Years of tagged, annotated research\n  are a real asset, the library still holds, and there’s no urgent reason to\n  move if it’s serving you.\n\u003C\u002Fp>\n\u003Cp>\n  For anyone starting fresh, the recent slide is hard to argue past. The\n  tag-based organisation and cross-device sync are genuinely good; the interface\n  and the reliability are not, and both matter more on day one than they do on\n  year ten.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-8\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n   covers the same highlight-and-sync ground with more colors, on-device\n  AI, PDF annotations you can download, and no account to start. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\">Glasp\u003C\u002Fa>\n   brings the modern AI and community layer Diigo never built. And \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\">Weava\u003C\u002Fa>\n   matches its folder-based research approach — the two share both the idea\n  and the maintenance problem.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-8\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdiigo-web-collector-vs-web-highlights\"\n  >\n    Diigo vs PDF & Web Highlighter\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdiigo-web-collector-vs-weava\"\n  >\n    Diigo vs Weava\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fdiigo-web-collector-vs-glasp-web-highlighter\"\n  >\n    Diigo vs Glasp\n  \u003C\u002Fa>\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-8\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Diigo has 100,000 downloads on Chrome with a 4.60\u002F5 all-time rating from 2,323\n  reviews, though recent reviews have dropped to 3.50 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Diigo a score of \n  \u003Cstrong>7.55\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"10-weava-highlighter-pdf-web\">\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\"\n    >10. Weava Highlighter: PDF & Web\u003C\u002Fa\n  >\n\u003C\u002Fh2>\n\u003Cfigure class=\"kg-card kg-image-card\">\n  \u003Cimg\n    src=\"https:\u002F\u002Ftooltivity.com\u002Fdata\u002Ftooltivity\u002Fapps\u002Fweava\u002Fimages\u002Flogo.webp\"\n    class=\"kg-image\"\n    alt=\"Weava Highlighter extension icon\"\n    loading=\"lazy\"\n    width=\"512\"\n    height=\"320\"\n  \u002F>\n\u003C\u002Ffigure>\n\u003Cp>\n  Weava closes the list, and it’s the clearest warning in it. 200,000 downloads\n  and a 4.05\u002F5 all-time rating from 2,754 reviews look fine until you read the\n  recent column: 2.78 across the last 100. That’s the steepest fall of any tool\n  here, and the only one where the current average is below three stars.\n\u003C\u002Fp>\n\u003Cp>\n  The bones are still reasonable — web and PDF highlighting in several colours,\n  notes, folders, cloud sync, automatic citations for what you highlighted.\n  What’s dragging it under is everything around them: ads in the interface, a\n  mandatory account, a design that stopped being updated, and a run of reviews\n  about features breaking and support not answering. It works. It just isn’t\n  being looked after.\n\u003C\u002Fp>\n\u003Ch3 id=\"key-features-9\">Key Features\u003C\u002Fh3>\n\u003Cul>\n  \u003Cli>\n    \u003Cstrong>Web & PDF Highlighting\u003C\u002Fstrong>\n     – Highlight web pages and PDFs in several colors\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Annotations\u003C\u002Fstrong>\n     – Add notes to any highlight for later reference\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Cloud Syncing\u003C\u002Fstrong>\n     – Reach your highlights and notes from any device\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Organize with Folders\u003C\u002Fstrong>\n     – Structure research with folders and sub-folders\n  \u003C\u002Fli>\n  \u003Cli>\n    \u003Cstrong>Citation Creation\u003C\u002Fstrong>\n     – Generate citations for highlighted passages automatically\n  \u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"pros-cons-9\">Pros & Cons\u003C\u002Fh3>\n\u003Cp>\u003Cstrong>Pros:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Covers both web and PDF highlighting\u003C\u002Fli>\n  \u003Cli>Cloud sync across devices\u003C\u002Fli>\n  \u003Cli>Automatic citations for research\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>\u003Cstrong>Cons:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n  \u003Cli>Interface cluttered with ads\u003C\u002Fli>\n  \u003Cli>Free version limits how much you can highlight\u003C\u002Fli>\n  \u003Cli>Account required before you start\u003C\u002Fli>\n  \u003Cli>Little sign of ongoing support or updates\u003C\u002Fli>\n  \u003Cli>Recent rating of 2.78 — the lowest in this comparison\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"who-is-this-great-for-9\">Who is this great for?\u003C\u002Fh3>\n\u003Cp>\n  Weava may still suit long-time users with folders of research inside it who\n  don’t want to migrate. The highlighting and folder structure remain usable if\n  you can look past the ads, and the automatic citations are a genuine\n  time-saver for a bibliography.\n\u003C\u002Fp>\n\u003Cp>\n  For everyone else, I’d point you elsewhere. A 2.78 average across the most\n  recent hundred reviews isn’t a blip, and there are better-supported\n  highlighters in this list at the same price.\n\u003C\u002Fp>\n\u003Ch3 id=\"compared-to-others-9\">Compared to others\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\"\n    >PDF & Web Highlighter\u003C\u002Fa\n  >\n   does the same web-and-PDF highlighting without ads, without an account,\n  and with a maintained interface — though Weava’s automatic citations are\n  something we don’t offer. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdiigo-web-collector\">Diigo\u003C\u002Fa>\n   shares the folder-based approach and much of the same ageing. And \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\">Glasp\u003C\u002Fa>\n   leaves it behind on features, community, and upkeep.\n\u003C\u002Fp>\n\u003Ch3 id=\"detailed-comparisons-9\">Detailed comparisons\u003C\u002Fh3>\n\u003Cp>\n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweava-vs-web-highlights\">\n    Weava vs PDF & Web Highlighter\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweava-vs-diigo-web-collector\"\n  >\n    Weava vs Diigo\n  \u003C\u002Fa>\n   • \n  \u003Ca\n    href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fweava-vs-glasp-web-highlighter\"\n  >\n    Weava vs Glasp\n  \u003C\u002Fa>\n\u003C\u002Fp>\n\u003Ch3 id=\"rating-summary-9\">Rating Summary\u003C\u002Fh3>\n\u003Cp>\n  Weava has 200,000 downloads on Chrome with a 4.05\u002F5 all-time rating from 2,754\n  reviews, but only 2.78 across the last 100. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\">Tooltivity\u003C\u002Fa>\n   gave Weava a score of \n  \u003Cstrong>5.67\u002F10\u003C\u002Fstrong>\n  . \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweava\"\n    >Check out the full review here\u003C\u002Fa\n  >\n  .\n\u003C\u002Fp>\n\u003Chr \u002F>\n\u003Ch2 id=\"final-thoughts\">Final Thoughts\u003C\u002Fh2>\n\u003Cp>\n  Working through all ten, the first thing that stands out has nothing to do\n  with features. Look at the recent-review column. Kami fell from 4.56 to 3.87,\n  Diigo from 4.60 to 3.50, Weava from 4.05 to 2.78 — three tools whose\n  reputations were earned years ago and whose current users are telling a\n  different story. All-time ratings in this category are a record of what a tool\n  used to be. Check the last hundred before you commit a semester to something.\n\u003C\u002Fp>\n\u003Cp>\n  The second thing is that “PDF extension” describes two unrelated jobs, and\n  most disappointment comes from picking the wrong half. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fweb-highlights\">\n    \u003Cstrong>PDF & Web Highlighter\u003C\u002Fstrong>\n  \u003C\u002Fa>\n   takes the top spot at 9.78\u002F10 for the reading half: highlights that go\n  into a searchable library, come back out embedded as real PDF annotations, and\n  turn into flashcards, with the AI running on your own machine and no account\n  needed to start. That’s what it’s good at. It converts nothing, compresses\n  nothing, and signs nothing.\n\u003C\u002Fp>\n\u003Cp>\n  So, honestly, by job. For the deepest, most trusted toolkit — \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fadobe-acrobat\"\n    >\u003Cstrong>Adobe Acrobat\u003C\u002Fstrong>\u003C\u002Fa\n  >\n  , if you can live with the subscription and the prompts. \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fsmallpdf\"\n    >\u003Cstrong>Smallpdf\u003C\u002Fstrong>\u003C\u002Fa\n  >\n   is the best all-rounder for converting and compressing, with \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fxodo\">\u003Cstrong>Xodo\u003C\u002Fstrong>\u003C\u002Fa>\n   as the rougher free alternative. For signing from your inbox, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fdochub\">\u003Cstrong>DocHub\u003C\u002Fstrong>\u003C\u002Fa>\n   is faster than anything else here on the days it loads. In a\n  classroom, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fkami\">\u003Cstrong>Kami\u003C\u002Fstrong>\u003C\u002Fa>\n   still owns collaborative markup and voice feedback outright. And if the\n  point of annotating is that someone replies, \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fhypothesis\"\n    >\u003Cstrong>Hypothesis\u003C\u002Fstrong>\u003C\u002Fa\n  >\n   beats us and costs nothing — \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fglasp-web-highlighter\"\n    >\u003Cstrong>Glasp\u003C\u002Fstrong>\u003C\u002Fa\n  >\n   is the pick if you’d rather choose your own AI model and read what\n  others highlighted.\n\u003C\u002Fp>\n\u003Cp>\n  Every tool here has a free tier, so the cheap way to decide is to install two\n  and run the same week of real documents through both. If you mostly read\n  PDFs, \n  \u003Ca href=\"https:\u002F\u002Fweb-highlights.com\u002Finstall\">PDF & Web Highlighter\u003C\u002Fa>\n   is the one I’d start with — nothing to sign up for, and you’ll know\n  within a few days whether keeping your notes in a library beats keeping them\n  in the file. Or open the \n  \u003Ca href=\"https:\u002F\u002Ftooltivity.com\u002Fextensions\u002Fcompare\u002Fcategory\u002Fpdf-tools\u002Fchrome\">\n    full comparison of all Chrome PDF extensions\n  \u003C\u002Fa>\n   and weigh them side by side yourself.\n\u003C\u002Fp>\n","Marius Bongarts","https:\u002F\u002Fwww.facebook.com\u002FMariusBongartsWeb","\u002Fblog\u002Fcontent\u002Fimages\u002F2022\u002F08\u002FIMG_7861_Square.jpeg","https:\u002F\u002Fmarius-bongarts.de\u002F","Founder & Software Engineer","https:\u002F\u002Ftwitter.com\u002FMariusBongarts",6217,[117,146,178],{"id":118,"slug":119,"title":120,"description":121,"url":122,"publishedAt":123,"createdAt":124,"updatedAt":123,"featured":80,"readingTime":125,"tags":126,"imageUrl":127,"imageAlt":128,"faviconUrl":129,"publishedAtString":123,"category":130,"readTimeString":145},"6a44e3e8909b7209ced49a7e","free-online-pdf-highlighter-highlight-any-pdf-no-install","Free Online PDF Highlighter — Highlight Any PDF, No Install","You can't highlight a PDF in Chrome. You can open one and read it, sure. But try to mark a sentence, and there's nothing there to do it with.\n\nI built a PDF highlighter tool, so I hear about this one a lot. My usual answer was: install my browser extension, or install something like Acrobat. Fine advice — unless you've got a single PDF to mark up and no interest in installing anything for it.\n\nSo I built a version that skips all that. It's a web page: open it, drop in a PDF, and highlight away. ","https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Ffree-online-pdf-highlighter-highlight-any-pdf-no-install\u002F","2026-07-01T10:01:26.000+00:00","2026-07-01T09:54:48.000+00:00",5,[],"https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Fcontent\u002Fimages\u002F2026\u002F07\u002Fpdf-upload-thumbnail.png","Free Online PDF Highlighter that works without installing any software right in your browser","https:\u002F\u002Fweb-highlights.com\u002Ffavicon.ico",[131,138],{"type":132,"title":133,"shortTitle":134,"icon":135,"description":136,"excerpt":137},"highlighting","Highlight Websites & PDFs in Chrome","Highlighting","mark-icon","From PDF highlighters to Chrome extensions—see how Web Highlights makes highlighting fast, colorful, and organized across the sites you read every day.","Highlighting should feel as natural as a physical marker, but with superpowers: multi-color marks, notes, tags, and sync. Web Highlights is built for both web pages and PDFs, so you can keep one workflow instead of juggling separate “PDF only” or “website only” tools.",{"type":139,"title":140,"shortTitle":141,"icon":142,"description":143,"excerpt":144},"annotating","Annotate the Web & PDFs with Web Highlights","Annotating","feather-edit-3","Annotating long texts is challenging. Learn techniques for better annotations and how Web Highlights helps you mark up articles and PDFs in the browser.","Annotation turns passive scrolling into real understanding. Whether you need marginal notes for research, structured tags for coursework, or quick highlights for newsletters, Web Highlights keeps every mark anchored to the source—so you can review, search, and export without losing context.","5 min read",{"id":147,"slug":148,"title":149,"description":150,"url":151,"publishedAt":152,"createdAt":153,"updatedAt":154,"featured":80,"readingTime":155,"tags":156,"imageUrl":160,"imageAlt":161,"faviconUrl":129,"publishedAtString":152,"category":162,"readTimeString":177},"6995c0bdc6e74609dc5bbf93","how-to-active-reading-online","Active Online Reading: Why It Matters for Students and Researchers","Learn how to active reading online with proven active reading strategies that improve reading comprehension, memory, and research organization.","https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Fhow-to-active-reading-online\u002F","2026-02-21T07:19:19.000+00:00","2026-02-18T13:38:05.000+00:00","2026-04-04T07:40:18.000+00:00",10,[157,158,159],"Learning","Reading","students","https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Fcontent\u002Fimages\u002F2026\u002F07\u002Fhow-to-active-reading-online.jpg","Young teen doing schoolwork at home by reading online on a laptop",[163,170,176],{"type":164,"title":165,"shortTitle":166,"icon":167,"description":168,"excerpt":169},"research","Research & Study with Web Highlights","Research & study","target","For students and researchers: active reading, citation-friendly capture, and tools that make long PDFs and articles easier to process.","Research reading means volume, speed, and recall. Web Highlights supports deep work with highlights, tags, and notes on articles and PDFs—so you can prep for exams, papers, and casework without losing the thread across dozens of sources.",{"type":171,"title":172,"shortTitle":158,"icon":173,"description":174,"excerpt":175},"reading","Reading Workflows with Web Highlights","reader","Whether you read on Kindle, Blinkist, or the web — Web Highlights brings all your highlights into one place so nothing gets lost between apps and devices.","Great reading isn’t only about finishing articles—it’s about capturing what matters. Web Highlights helps you save, tag, and revisit highlights across the reading tools you already use, so your “read later” list becomes a library you can actually search and reuse.",{"type":139,"title":140,"shortTitle":141,"icon":142,"description":143,"excerpt":144},"10 min read",{"id":179,"slug":180,"title":181,"description":182,"url":183,"publishedAt":184,"createdAt":185,"updatedAt":186,"featured":80,"readingTime":187,"tags":188,"imageUrl":189,"imageAlt":190,"faviconUrl":129,"publishedAtString":184,"category":191,"readTimeString":194},"697333dac6e74609dc5bbeac","what-is-web-annotation-for-students-and-researchers","What Is Web Annotation? A Complete Guide for Students and Researchers","Learn what web annotation is, how it works, and why students and researchers use web annotation to study, review sources, and keep context online.","https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Fwhat-is-web-annotation-for-students-and-researchers\u002F","2026-01-29T09:25:26.000+00:00","2026-01-23T08:39:54.000+00:00","2026-04-09T12:58:00.000+00:00",11,[],"https:\u002F\u002Fweb-highlights.com\u002Fblog\u002Fcontent\u002Fimages\u002F2026\u002F07\u002Fwhat-is-web-annotation-for-students-and-researchers.jpg","Person taking notes with pen and colorful highlighters",[192,193],{"type":139,"title":140,"shortTitle":141,"icon":142,"description":143,"excerpt":144},{"type":164,"title":165,"shortTitle":166,"icon":167,"description":168,"excerpt":169},"11 min read",[196,201,206,211,216,221],{"reviewer":197,"reviewText":200},{"name":198,"avatarURL":199},"Maria Mills","https:\u002F\u002Flh3.googleusercontent.com\u002Fa\u002FACg8ocKhTUz6aTHCJj3pErsWdRnTKqWmbnWhlQzCMPG0RM3O0EpC9A=s32-mo","As someone who has struggled with both ADHD and dyslexia, I can say with absolute certainty that Web Highlights has been a true game-changer in my life. It has had a profound impact on my ability to manage the challenges associated with my disabilities. …",{"reviewer":202,"reviewText":205},{"name":203,"avatarURL":204},"Ian Schnee","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjVm-Xwq3SExdsSuzvKDBdzjtDtJLXZmFsCC5YHSmNrnu2E=s32","Amazing Chrome extension--has my vote for one of the best things on the internet that's still free. If you want the added features of a paid account, like synching and backups, the cost is reasonable. …",{"reviewer":207,"reviewText":210},{"name":208,"avatarURL":209},"Syed Azhar Hussain Shah","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjXNpiQz6OeNK_-V8nQIKkEp86eyaHynjjD5IUsL7Pqhd2QOdcxxKA=s32","Excellent extension. I needed a program that I could use to highlight passages from different news articles for my research project. Web Highlighter became a life saver. There were other highlighter extensions, but only this had the options to save passages and add tags to them. …",{"reviewer":212,"reviewText":215},{"name":213,"avatarURL":214},"Isabella Frias","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjU7y1PlNcZWfyuKKbdN6l6NcK1naQflzJOdefq4yGLn7HM=s32","LOVE LOVE LOVE! I'm a college student and most professors assign readings that are available online now. I also have ADHD and highlighting (and color coding) are a must, so I make sure I understood what I read. …",{"reviewer":217,"reviewText":220},{"name":218,"avatarURL":219},"Zee Dean","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjV6NDfSVpshcj33Eo93zydENYioYz9rA1mTd2BYebSVxynoP1jRWg=s32","The PDF & Web Highlighter app is incredibly helpful and useful, especially for anyone who frequently works with online or PDF content. I use it regularly to highlight key information across various documents and websites, which makes reviewing and organizing important points …",{"reviewer":222,"reviewText":225},{"name":223,"avatarURL":224},"Inan","https:\u002F\u002Flh3.googleusercontent.com\u002Fa-\u002FALV-UjW_Sy77Shq2iJXYyrkkUM36Cf5n96hkT5p7-9Zhd9ySwRWOmqeP=s32","I've been using Web Highlights PDF & Web Hi for a while now, and it's become an essential tool for my research workflow. Highlighting key points on websites and PDFs is a breeze, and the ability to take notes and save them alongside the highlighted content is incredibly useful. …"]