This is a simple tool to show attribution data in Firefox installers for Windows. It can be used to diagnose issues with features such as RTAMO. No "server-side" is involved, everything is performed in the browser.


Select a Windows installer for Firefox in the "Input:" section below and the attribution data should automatically appear under "Output:". Such an installer is usually downloaded from and it should be named Firefox Installer.exe.

Once an installer has been successfully read, the URL is updated and can be shared. The attribution data is put in the "hash" part of the URL for privacy purposes.

Note that an installer may not contain any data, in which case the output section will remain blank. In doubt, you can certainly ask @willdurand ;-)