1. Mozilla
  2. Add-ons
  3. Browser extensions
  4. manifest.json
  5. manifest_version

manifest_version

Type Number
Mandatory Yes
Example
json
"manifest_version": 3

This key specifies the version of manifest.json used by this extension.

Example

json
"manifest_version": 3

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
manifest_version
Chrome – Full support
Chrome 4 (Release date: 2010-01-25)
footnote Full support
Edge – Full support
Edge 14 (Release date: 2016-08-02)
footnote Full support
Firefox – Full support
Firefox 48 (Release date: 2016-08-02)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 14 (Release date: 2020-09-16)
footnote Full support
Firefox for Android – Full support
Firefox for Android 48 (Release date: 2016-08-02)
footnote Full support
Safari on iOS – Full support
Safari on iOS 15 (Release date: 2021-09-20)
footnote Full support
Version 2
Chrome – Full support
Chrome 21 (Release date: 2012-07-31)
footnote Full support
Edge – Full support
Edge 14 (Release date: 2016-08-02)
footnote Full support
Firefox – Full support
Firefox 48 (Release date: 2016-08-02)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 14 (Release date: 2020-09-16)
footnote Full support
Firefox for Android – Full support
Firefox for Android 48 (Release date: 2016-08-02)
footnote Full support
Safari on iOS – Full support
Safari on iOS 15 (Release date: 2021-09-20)
footnote Full support
Version 3
Chrome – Full support
Chrome 88 (Release date: 2021-01-19)
footnote Full support
Edge – Full support
Edge 88 (Release date: 2021-01-21)
footnote Full support
Firefox – Full support
Firefox 109 (Release date: 2023-01-17)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 15.4 (Release date: 2022-03-14)
footnote Full support
Firefox for Android – Full support
Firefox for Android 109 (Release date: 2023-01-17)
footnote Full support
Safari on iOS – Full support
Safari on iOS 15.4 (Release date: 2022-03-14)
footnote Full support

Tip: you can click/tap on a cell for more information.

Full support
No support

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