Add-ons

Themes Discussions about background themes and complete themes. 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. Add-on Support Need help with an add-on? Ask here! Announcements Important announcements for the add-ons community.

Topic	Replies	Views	Activity
About the Add-ons category Add-ons	0	24857	July 11, 2014
Firefox Nova is here: what theme developers need to check Announcements	3	165	October 6, 2026
Publishing an Outlook-style compose ribbon (Experiment) on ATN, and possible upstream integration Add-on Support	0	13	October 6, 2026
Appeal — developer account email blocked from submissions; ingest auto-flag root cause identified and fixed in v0.6.2 Add-ons issue	1	27	October 5, 2026
When publishing a theme, Firefox says the theme is corrupt Themes learning , issue	2	416	October 5, 2026
Hi So I still cannot post reviews addons.mozilla.org	1	34	October 5, 2026
Rate limited on AMO API Keys page ("submitted this form too many times") Add-on Support	1	39	October 5, 2026
Creating a WebExtensions extension that works in multiple browsers Development	2	851	October 5, 2026
Submission confirmed by email but invisible from my account (0 add-ons, 404 on the edit page) Add-ons	1	20	October 5, 2026
tabGroups query Development	1	28	October 5, 2026
Request to unpublish or transfer old Watcher24 add-on listing (locked account) Add-ons	1	27	October 5, 2026
New Firefox Nova UI causes several themes to have a white border below the toolbar (v157.0) Themes feedback , issue	0	52	October 3, 2026
A Big Thank You For Firefox Team for approving my Add-On Add-ons	0	11	October 2, 2026
Unable to log in to AMO "You do not have permission to perform this action" addons.mozilla.org	5	93	October 2, 2026
Location request on Firefox for Android Add-ons	1	40	October 2, 2026
Invalid manifest, even though all parameters are fine Themes	1	30	October 1, 2026
No link or button to write a review of a web extension addons.mozilla.org	3	613	October 1, 2026
I have no understanding of what is going on? addons.mozilla.org	4	112	September 29, 2026
Unable to access existing AMO account and add-on ownership Add-on Support	7	166	September 28, 2026
Need Help Regarding New Add-on Review Delay too much waiting time Add-on Support	1	60	September 28, 2026
Large review times make it impractical to distribute via the listed channel addons.mozilla.org add-on-reviews	3	68	September 28, 2026
Need Help Regarding New Add-on Review Delay Add-ons issue	1	35	September 28, 2026
Listing icon stays as default placeholder after approval — Always Translate (1.1.5, 1.1.9) addons.mozilla.org	0	26	September 27, 2026
Policy clarification: embedding user-selected websites in an extension page Add-ons learning	0	16	September 27, 2026
Only The Hamburger Menu Is not Following Theme Color Themes	3	901	September 25, 2026
Corrupted sessionstore.jsonlz4 file? Development issue	1	47	September 25, 2026
Addons Stuck for Review for quite a long time Add-ons issue	8	106	September 25, 2026
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…	173	20303	September 25, 2026
Extension Disabled Add-ons issue	1	37	September 25, 2026
The new data transmission permissions seem to be misleading to users addons.mozilla.org	10	2167	September 25, 2026