Add-ons

Add-on Support Need help with an add-on? Ask here! Contribute Help keep Firefox the most customizable browser available. Contribute code, organize events, translate things, evangelize, and more. Firefox for Android Add-ons This space is specifically for developers with technical questions as they prepare their desktop add-ons for availability on Android. Development Technical discussions about add-on development. addons.mozilla.org Discussions about AMO add-on reviews and bugs. Announcements Important announcements for the add-ons community. Themes Discussions about background themes and complete themes.

Topic	Replies	Views	Activity
About the Add-ons category Add-ons	1	22541	July 11, 2014
I couldn't install the userChrome feature Development learning , issue	1	19	April 22, 2024
Can't create userstyle.css Development learning , issue	1	21	April 22, 2024
Modify headers with declarativeNetRequest.updateSessionRules()? Development issue	6	235	April 22, 2024
PKCS11_addon addons.mozilla.org	2	157	April 22, 2024
Addon to change tab title Add-on Support	2	197	April 22, 2024
Allow an extension to configure Firefox security devices_PCKS11 Add-on Support	2	179	April 22, 2024
Making an addon searchable in https://addons.mozilla.org addons.mozilla.org	2	172	April 22, 2024
My Add-on keep getting taken down for no reason Development	2	34	April 22, 2024
Python "native-messaging" web extensions on mac unable to read / write files on Downloads folder Development webextensions-api	3	830	April 22, 2024
Native messaging webextensions-examples errors Development	3	67	April 21, 2024
Regarding our add-on rejected by mozilla team Add-ons issue	8	166	April 20, 2024
Help on private theme download link Themes issue	1	65	April 19, 2024
tabs.executeScript does not work with containered tabs Development issue	3	76	April 18, 2024
Upgraded add-on signatures Announcements	1	75	April 17, 2024
Keeweb connect suddenly disappeared from the add-ons browser Add-ons	5	143	April 17, 2024
Add-ons submissions help needed Add-on Support	1	73	April 17, 2024
Shortcomings of Firefox themeing modules, many elements can't be themed or updated Themes	1	63	April 17, 2024
Someone published copies of my add-on on AMO addons.mozilla.org	46	1775	April 17, 2024
Widevine addon is crashing Add-on Support	3	266	April 17, 2024
Custom theme light and dark Themes	2	477	April 17, 2024
Add-on getting rejected on submission Add-on Support	2	219	April 16, 2024
Which policies apply to AMO-listed addons vs. self-distributed addons? addons.mozilla.org	11	710	April 16, 2024
Dictionary with wrong name in the addons page addons.mozilla.org	3	201	April 16, 2024
Yahoo Homepage Add-ons issue	2	96	April 15, 2024
Issue when uploading via addons Add-on Support	3	135	April 15, 2024
Content-script: How to wait for React DOM to load? Development content	2	461	April 15, 2024
How to use a custom font in addon Development learning	3	154	April 11, 2024
Browser Security Plus add-on restoration in the Firefox store Add-on Support	1	95	April 10, 2024
Why can I not load a simple custom extension/addon xpi file in Android Nightly? Add-on Support	1	206	April 8, 2024