Browser support for WebExtensions

developer.mozilla.orgsite

Compatibility table for Chrome, Edge, Firefox, and Opera.

from

WebExtensions

added

2026-10-10

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1. ▲
   Browser Extension Standard browserext.github.io

   site category #webextensions link ↗

   Standard for the API, supported by Mozilla, Opera and Microsoft.

2. ▲
   Mozilla's WebExtensions documentation developer.mozilla.org

   site category #webextensions link ↗

   MDN wiki for the WebExtensions API.

3. ▲
   Opera API support dev.opera.com

   site category #webextensions link ↗

   Detailed WebExtensions support for Opera.

   
4. ▲
   Browser Support webvr.rocks

   site category #webgl link ↗

   Shows support by browser, headset, and OS.

5. ▲
   WebGPU browser support overview caniuse.com

   site category #webgpu link ↗

   Browser compatibility tables.

6. ▲
   Chrome Extensions documentation developer.chrome.com

   site category #webextensions link ↗

   Documentation for the original Chrome extension model.

WebExtensions › Getting started: “Compatibility table for Chrome, Edge, Firefox, and Opera.”