Mozilla Firefox addons or extensions are programs that can be installed into Firefox in order to change the browser's functionality. This includes adding new features or modifying existing ...

To install an extension, select it and then click the Add to Firefox button. Click Add and then choose whether you want the extension to run in a private window.

How to add a third-party translation extension to Firefox Since Firefox does not include any built-in translation features, you'll have to download an add-on on your Mac or PC.

Firefox for mobile devices lets you install browser extensions. If you want to know how to, there's a handy guide.

Check 7 great extensions available for Mozilla Firefox! Improve your experience with this powerful web browser.

Neiman says Firefox will continue to read sideloaded extensions, but they'll be slowly converted into normal add-ons inside a user's Firefox profile, and made available in the browser's Add-ons ...