Type | Object |
---|---|
Mandatory | Usually, no (but see also When do you need an Add-on ID?). Mandatory before Firefox 48 (desktop) and Firefox for Android. |
Example |
"browser_specific_settings": { "gecko": { "id": "addon@example.com", "strict_min_version": "42.0" } } |
Description
The browser_specific_settings
key contains keys that are specific to a particular host application.
Firefox (Gecko) properties
Firefox stores is browser specific settings in the gecko
subkey, which has the following properties:
id
- Is the extension ID. Optional from Firefox 48, mandatory before Firefox 48. See Extensions and the Add-on ID to see when you need to specify an add-on ID.
strict_min_version
- Minimum version of Gecko to support. Versions containing a "*" are not valid in this field. Defaults to "42a1".
strict_max_version
- Maximum version of Gecko to support. If the Firefox version on which the extension is being installed or run is above this version, then the extension will be disabled, or not permitted to be installed. Defaults to "*", which disables checking for a maximum version.
update_url
- Is a link to an extension update manifest. Note that the link must begin with "https". This key is for managing extension updates yourself (i.e. not through AMO).
See the list of valid Gecko versions.
Extension ID format
The extension ID must be one of the following:
- GUID
- A string formatted like an email address:
extensionname@example.org
The latter format is easier to generate and manipulate. Be aware that using a real email address here may attract spam.
For example:
"id": "extensionname@example.org"
"id": "{daf44bf7-a45e-4450-979c-91cf07434c3d}"
Microsoft Edge properties
Warning: Adding Edge-specific properties to the manifest caused an error prior to Firefox 69 which can prevent the extension from installing.
Microsoft Edge stores its browser specific settings in the edge
subkey, which has the following properties:
browser_action_next_to_addressbar
-
Boolean property which controls the placement of the browser action.
true
is equivalent to settingbrowser_action.default_area
tonavbar
.false
is equivalent to settingbrowser_action.default_area
tomenupanel
.
Safari properties
Warning: Adding Safari-specific properties to the manifest caused an error prior to Firefox 69 which can prevent the extension from installing.
Safari stores its browser specific settings in the safari
subkey, which has the following properties:
strict_min_version
- Minimum version of Safari to support.
strict_max_version
- Maximum version of Safari to support.
Examples
Example with all possible keys. Note that most extensions will omit strict_max_version
and update_url
.
"browser_specific_settings": { "gecko": { "id": "addon@example.com", "strict_min_version": "42.0", "strict_max_version": "50.*", "update_url": "https://example.com/updates.json" }, "edge": { "browser_action_next_to_addressbar": true }, "safari": { "strict_min_version": "14", "strict_max_version": "20" } }
Browser compatibility
Desktop | Mobile | |||||
---|---|---|---|---|---|---|
browser_specific_settings | Chrome No support No | Edge No support 15 — 79 | Firefox
Full support
48
| Opera No support No | Safari
Partial support
14
| Firefox Android
Full support
48
|
Legend
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- See implementation notes.
- See implementation notes.
- Uses a non-standard name.
- Uses a non-standard name.