Add-ons   Development


Topic Replies Activity
Introduction to Add-on Development 36 June 15, 2019
Extension development tools

Hi all, I’m excited to share some tools that community members have recently created to help with extension development. If you’ve built something that could be helpful to others, please let us know by replying to this …

4 April 16, 2018
About the Development category 1 May 21, 2015
Firefox extension update problem- SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data 3 November 18, 2019
getBackgroundPage in private mode 11 November 18, 2019
Getting user input from a popup and updating text on the popup 1 November 15, 2019
Updating extension installed via policy and self-distributed as file 2 November 15, 2019
Can data be added to a download request? 1 November 13, 2019
Passing HTML content from extension to web page other than as a string 5 November 13, 2019
"openerTabId" not present in tab opened as a popup (getting opener tab of popup) 6 November 13, 2019
Installation via policy 2 November 13, 2019
Clear cache OR clear service worker 5 November 10, 2019
How to execute content script from the sidebar? 8 November 9, 2019
Activating tab and taking its screenshot in Android is not working well (shot took before tab is active) 3 November 9, 2019
Best way to open a prompt to request userdata from options_ui 6 November 9, 2019
How the statements "x++;" and "x = x + 1;" behave and why they are different? (Case javascript) 4 November 9, 2019
Collecting your thoughts about Manivest V3 and the Recommended Extensions program 13 November 9, 2019
Mozilla workshop about Manifest V3 and the Recommended Extensions Program 1 November 9, 2019
Acceleration of my extensions (RUST or other ?) 4 November 8, 2019
nsIScriptableInputStream accesses data with exception ESR 68 1 November 5, 2019
I'm in a very desperate need of tricking garbage collection into triggering 15 November 5, 2019
Apply css filter on video tag not working 5 November 4, 2019
Open sidebar to the right by default. Possible? 2 November 4, 2019
IndexedDB: one-to-many relation - How? 6 October 31, 2019
How to detect the dark theme in a WebExtension? 4 October 31, 2019
How to open toolbar popup programmatically 3 October 29, 2019
Prevent toolbar popup from closing when pressing Esc 2 October 26, 2019
The Icon in Page-Action on Android platform too small 3 October 25, 2019
Pre/Post FF 63 How to Handle Access Keys in Context Menus 5 December 17, 2018
User JS script to autofocus awesome bar broke in FF 70 1 October 25, 2019