To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!

Stäng

Välkommen till Firefox tillägg.

Choose from thousands of extra features and styles to make Firefox your own.

Stäng

On the go?

Check out our Mobile Add-ons site.

Stäng

Submit an Add-on

Skicka in ett nytt tema

Learn All About Add-ons

Add-ons let millions of Firefox users enhance and customize their browsing experience. If you're a Web developer and know HTML, JavaScript, and CSS, you already have all the necessary skills to make a great add-on.

Head over to the Mozilla Developer Network to learn everything you need to know to get started.

Start Making Add-ons