Browser Support
Overview
The @webext-core packages are simple wrappers around webextension-polyfill by Mozilla. As such, they will work on:
| Browser | Supported Versions |
|---|---|
| Chrome | >= 87 |
| Firefox | >= 78 |
| Safari 1 | >= 14 |
| Edge | >= 88 |
Other Chromium-based browsers are not officially supported, and may not work2. See Mozilla's supported browsers documentation for more details.
1
webextension-polyfillworks on Safari, however Safari does not implement the complete web extension standard. See the browser compatibliity chart for more details.2 In practice, the browsers are close enough to chrome that they work 99% of the time. But make sure to test your extension before assuming it will work.