Add-ons   Development

Extension development tools (4)
Introduction to Add-on Development ( 2 ) (29)
About the Development category (1)
Changing language of add-on (7)
Intercept XHR and make it downloadable with page/browser action popup menu (5)
How do I capture the video for the current tab? (3)
"Get/Download addon for Firefox" badge/button to embed into website? (8)
How to create a menu with underscore as key binding/accesskey? (4)
Loading failed - google maps js api in add-on? (3)
Addon update procedure with new permission (3)
Foxfire mobile (2)
Alternative to unsafe-eval (19)
Developing a Scrabble Word Unscrambler extension (2)
Native Message - close process when close exe (5)
Javascript and css library could not be loaded in a custom page (2)
WebExtension: XMLHttpRequest / fetch() cookies are not sent even with third party cookies allowed (3)
How to check OCSP responder information through an add on? (2)
Upgrading to an add-on that specifies its add-on ID (3)
FF57 displays blank popup (6)
Signing a WebExtension Experiment (7)
Which license for open source but prohibiting commercial usage (4)
[Feature request] Extend WebExtensions API to add ability to create tabs with unloaded (discarded) state (3)
Are legacy addons autoupdated to Quantum compatible versions? (2)
Question about storage.sync (7)
Firefox Beta - reporting and fixing bugs (2)
Does not contain a valid install manifest . HELP! (3)
POST request from addon page to server is empty (6)
Extensions on pdfjs pages (4)
Add-ons have box-sizing: border-box by default?! (5)
MIssing host permission for the tab when running web-ext run (3)