Affixa Browser Extensions - Manifest v3

Last Updated: 3 February 2025

The new Chrome extension has now been published in the Chrome Web Store and will be available for download soon!

Most modern web browsers are in the process of introducing a new version of the "manifest" standard to which browser extensions are built. This means that many browser extensions that are written according to version 2 of that standard now need to be upgraded to version 3.

The new Chrome extension has now been published in the Chrome Web Store and will be available for download soon!

As per previous updates on this page, we had been awaiting for further changes to and alignment between Chromium Manifest v3 implementations in order to avoid forcing our customers to also update their Windows software. We're pleased to say that we're now in a position to release a new browser extension without that being the case.

Firefox

Chromium v3 extensions must use a service worker, whereas Gecko v3 extensions still use a background script.

The extension is currently not reacting to Gmail web addresses as it should when operating as a background script in Firefox and we are investigating further.

We know that the vast majority of our users are using Chromium-based browsers and a minority are using Firefox. As such, we will prioritise Chromium for the v3 implementation and leave the v2 implementation on the Firefox Add-Ons site for the time being since it's working without issue.