Add-ons

Announcements Important announcements for the add-ons community. Development Technical discussions about add-on development. 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! Themes Discussions about background themes and complete themes. addons.mozilla.org Discussions about AMO add-on reviews and bugs.

Topic	Replies	Views	Activity
About the Add-ons category Add-ons	1	19818	July 11, 2014
browser.runtime.sendMessage() vs. browser.runtime.getBackgroundPage() Development	2	17	February 5, 2023
Get clicked element under contextMenus Add-on Support	3	62	February 4, 2023
Add-ons aren't displayed on toolbar Add-ons	6	51	February 3, 2023
How to Sanitize URL Development	15	461	February 3, 2023
How to ask user to grant permissions for 'Access your data for all websites' through a prompt during the installation process Development	3	60	February 2, 2023
Permissions not being asked upon add-on installation Add-on Support	4	106	February 2, 2023
Can someone explain the issue behind the rule: "Sandboxed iframes with attributes ‘allow-scripts’ and ‘allow-same-origin’ are not allowed for security reasons." Development	1	32	February 2, 2023
Fail to upload Icons and Screenshots addons.mozilla.org	2	37	February 1, 2023
Manifest v3 cookie required permission goes to option permission by it self Development	2	86	February 1, 2023
在中国禁用 AdBlocker 广告拦截器 Add-ons	2	167	January 31, 2023
Duplicate add-on ID found -> I am the owner of the duplicate Add-on Support	1	50	January 30, 2023
Get started with Firefox extension development Development Extensions provide a simple and powerful way to personalize your browsing experience. If you know JavaScript, CSS, and HTML, you can build your own. If you are brand-new to add-on development, you can get started by che…	5	5676	January 30, 2023
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…	110	9173	January 27, 2023
MV3, default CSP, override upgrade-insecure-requests Development	2	76	January 28, 2023
Chinese users can't use AD blocker extensions addons.mozilla.org	11	3707	January 28, 2023
Add-on "Status: Disabled by Mozilla " addons.mozilla.org add-on-reviews	13	1150	January 26, 2023
Random user agent Add-on Support	3	59	January 26, 2023
Problem installing extensions Add-on Support	2	113	January 25, 2023
Enhanced Tracking Protection not persisting credentials Add-ons	1	52	January 24, 2023
Add-On extension XPI file will download but will not automatically install addons.mozilla.org	2	77	January 23, 2023
Unable to install unsigned extension in Firefox Developer Edition Development	3	106	January 22, 2023
[Support] Classic mode for Wikipedia Add-on Support	1	99	January 22, 2023
[WebExtensions] How to auto Pin webExtension Icon in default toolbar in Firefox 109? Development	5	127	January 21, 2023
Accessing one add-on's data from another? Development	2	68	January 20, 2023
Get opened 'extension://<my ext id>/index.html' tabs without permission? Development	2	68	January 20, 2023
Cannot fetch URL from content script Add-on Support	1	75	January 20, 2023
Mozilla will not validate my manifest.json Development	6	98	January 18, 2023
Requests redirection not changing domain Add-on Support	1	76	January 17, 2023
[Blog post] Manifest V3 signing available November 21 on Firefox Nightly Announcements	4	293	January 16, 2023