If you are an add-on developer, and you’d like something a little snazzy to help you promote your add-ons, our creative team has cooked up something for you!

The new “Get the add-on” button comes in two sizes:

172 x 60 pixels

129 x 45 pixels

Simply save these images, put them on your website, and link them to your add-on’s listing on addons.mozilla.org. Questions? Please head to our forums.

If you’re interested in localizing the button for your language, please contact us.

Enjoy!

https://blog.mozilla.org/addons/2015/11/10/promote-your-add-ons-with-the-get-the-add-on-button/