Add-ons

Contribute Help keep Firefox the most customizable browser available. Contribute code, organize events, translate things, evangelize, and more. Add-on Support Need help with an add-on? Ask here! 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	22564	July 11, 2014
Add-on Review Questions addons.mozilla.org add-on-reviews This is a thread for questions about the add-on review process. I’ll be merging older existing threads into this one to help keep them in one place. If you have a question that hasn’t been previously answered, please fe…	139	13707	April 27, 2024
Trigger event when the user hovers the mouse over any tab Add-on Support	1	22	April 26, 2024
The resigning of old add-ons addons.mozilla.org	4	64	April 26, 2024
Post-MV3 versioning for "cross-browser" extensions? Development manifest-v3	1	55	April 26, 2024
Add-ons that break Websites & Add-on Management Add-ons	3	58	April 25, 2024
Where is this path? Development learning	2	52	April 25, 2024
Shortcomings of Firefox themeing modules, many elements can't be themed or updated Themes	3	141	April 24, 2024
Upcoming site maintenance for Extension Workshop Announcements	1	42	April 24, 2024
How to build something to add customized fields to the firefox password manager Add-ons	1	45	April 24, 2024
"Reported" themes not being checked Themes	3	165	April 23, 2024
Why can I not load a simple custom extension/addon xpi file in Android Nightly? Add-on Support	2	243	April 23, 2024
Menu font change in FF for Mac Add-ons	2	121	April 23, 2024
Allow an extension to configure Firefox security devices_PCKS11 Add-on Support	3	214	April 23, 2024
Modify headers with declarativeNetRequest.updateSessionRules()? Development issue	6	264	April 22, 2024
PKCS11_addon addons.mozilla.org	2	180	April 22, 2024
Addon to change tab title Add-on Support	2	221	April 22, 2024
Making an addon searchable in https://addons.mozilla.org addons.mozilla.org	2	197	April 22, 2024
My Add-on keep getting taken down for no reason Development	2	70	April 22, 2024
Python "native-messaging" web extensions on mac unable to read / write files on Downloads folder Development webextensions-api	3	962	April 22, 2024
Native messaging webextensions-examples errors Development	3	93	April 21, 2024
Regarding our add-on rejected by mozilla team Add-ons issue	8	203	April 20, 2024
Help on private theme download link Themes issue	1	99	April 19, 2024
tabs.executeScript does not work with containered tabs Development issue	3	101	April 18, 2024
Upgraded add-on signatures Announcements	1	119	April 17, 2024
Keeweb connect suddenly disappeared from the add-ons browser Add-ons	5	169	April 17, 2024
Add-ons submissions help needed Add-on Support	1	100	April 17, 2024
Someone published copies of my add-on on AMO addons.mozilla.org	46	1809	April 17, 2024
Widevine addon is crashing Add-on Support	3	289	April 17, 2024
Custom theme light and dark Themes	2	498	April 17, 2024