This guide will show you how to install an extension from a local file (such as .zip, .crx, or .xpi) in Vivaldi.
- Download the extension file as a .zip archive.
- Unzip the file to a folder on your computer.
- Open vivaldi://extensions in the address bar.
- Enable Developer mode (top right).
- Click Load unpacked and select the unzipped extension folder.
- Confirm installation if prompted.
Note: Vivaldi may allow .crx drag-and-drop, but "Load unpacked" is the most reliable method.
Tip: Always be careful when installing extensions from outside the official store. Only use files from trusted sources.