Porting a Chrome Extension to Firefox Add-on

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While Chrome and Firefox are two very different browsers, Chrome Extension and Firefox Add-on are now more similar than ever. Therefore, it is possible to transplant a Chrome extension to a Firefox Add-on and publish it to the Mozilla store with minor changes. This post is about how I transplanted my YouTube Comment Language Filter to Firefox.

Checking the Chrome incompatibilities

First, Firefox can run commands with the chrome namespace, such as chrome.tabs.onUpdated. However, a few codes still exist that Firefox cannot run. Firefox offers a handy website to check the chrome incompatibilities.

On your Chrome browser (or on any equivalent Chromium ,) visit .

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Porting a Chrome Extension to Firefox Add-on

Checking the Chrome incompatibilities

Adding Firefox Manifest ID

Uploading it to the Firefox Add-on Store

Update