Application Search Engines

Firefox defines various application search engines that are shipped to users.

The extensions for the definitions of these engines live in browser/components/search/extensions


Icon Requirements

It is preferred that each engine is shipped with a .ico file with two sizes of image contained within the file:

  • 16 x 16 pixels

  • 32 x 32 pixels

Some engines also have icons in browser/components/newtab/data/content/tippytop. For these engines, there are two sizes depending on the subdirectory:

  • favicons/: 32 x 32 pixels

  • images/: preferred minimum of 192 x 192 pixels

Updating Icons

To update icons for application search engines:

To update icons for tippytop: