Download Firefox 12-51 52 Esr !!top!! ★ Extended & Proven

Downloading and using older versions of Firefox like or versions 12 through 51

These are "Rapid Release" versions. While they are no longer supported with security updates, they are sometimes sought for testing or specific legacy software requirements. Firefox 52.9.0 ESR: Download Firefox 12-51 52 Esr

If you have landed on this page searching for the keyword "Download Firefox 12-51 52 ESR" , you are likely not looking for the newest Quantum engine or the latest UI overhaul. Instead, you need a specific piece of internet history. Downloading and using older versions of Firefox like

Legacy Add-ons: Versions 52 and below support classic XUL/XPCOM extensions that were disabled in Firefox 57 (Quantum). Instead, you need a specific piece of internet history

Users typically download these outdated versions for three main reasons:

John decided to take the plunge and went to the Firefox download page. He was presented with a confusing array of options: Firefox 12, 51, and 52 ESR. What did it all mean?