Thanks to the WebExtensions standard, developed by all the companies that create the big browsers, it is theoretically possible to create extensions simultaneously compatible with all of them.
Now, Mozilla, whose Firefox browser had the smallest catalog of extensions because it was not based on Chromium, has added an experimental functionality so that its users are able to import extensions developed for Google Chrome…
…being thus the first to implement this feature of WebExtensions, albeit with limitations: Mozilla has specified that the import is limited for now to some extensions —selected by them— from the Chrome Web Store that we must have already installed in our Chrome browser.
In fact, currently there are only 73 compatible extensions, but Mozilla plans to expand the list (and allow them to come from browsers other than Chrome). The list, yes, includes some popular extensions such as uBlock Origin, LastPass, AdGuard AdBlocker or Ghostery.
These temporary limitations are mainly due to the fact that The functionality is still in the testing phase..
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how to try it
And if you want to do just that, test it, you can follow these steps:
- Type ‘about:config’ (without quotes) in the address bar.
- Agree on the notice to beware that it will be displayed.
- Look for ‘browser.migrate.chrome.extensions.enabled’ (without quotes).
- Set the value of the function to ‘True’ by clicking on the change values button:

- Restart Firefox.
- Once activated, you will be able to import extensions by going to Menu > Settings > Import data. You can then select ‘Chrome’ from the list, expand the dropdown menu and make sure extensions are checked.
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