Migrating to WebExtensions: port your stored data
WebExtensions are the new standard for add-on development in Firefox, and will be the only supported type of extension in release versions of Firefox later this year. Starting in Firefox … Read more
Articles in “sdk”
How Video DownloadHelper Became Compatible with Multiprocess Firefox
Today’s post comes from Michel Gutierrez (mig), the developer of Video DownloadHelper, among other add-ons. He shares his story about the process of modernizing his XUL add-on to make it … Read more
Migrating Popup ALT Attribute from XUL/XPCOM to WebExtensions
Today’s post comes from Piro, the developer of Popup ALT Attribute, in addition to 40 other add-ons. He shares his thoughts about migrating XUL/XPCOM add-ons to WebExtensions, and shows us … Read more
The “Why” of Electrolysis
A multi-process architecture is finally coming to Firefox. Known by its codename, “Electrolysis” or “e10s,” this project aims to split the Firefox browser into a single process for the UI, … Read more
Signing Firefox add-ons with jpm sign
With this week’s release of Firefox 43, all add-ons must now be signed. While this will make the block-list and other malware prevention measures more effective, add-on developers who wish … Read more
Jetpack in 2014
It has been a while since there has been a Jetpack-related post on this blog; 2014 has been a pretty busy year with several major Jetpack-related milestones completed in the … Read more
Announcing Add-on SDK 1.17
I’m pleased to announce the immediate availability of Add-on SDK 1.17! You can download the SDK directly in either zip or tarball format. This is a maintenance release of the … Read more
How to develop a Firefox extension
Update: Firefox has used the WebExtensions API as its extension API since 2017. We encourage you to visit Extension Workshop to learn more about browser extensions and how you can … Read more
Changes to unsafeWindow for the Add-on SDK
In Firefox 30 the Add-on SDK is making a change to the execution environment for content scripts. While this change will not affect most add-ons, some patterns will no longer … Read more