78.15 OESR with Macos 10.11.6

[Alan6]

Hi all,

I'm not sure if I'm posting this on the right forum. If not, please excuse me.

I run firefox 78.15 on my old IMac running MacOs 10.11.

As you can imagine  I get troubles to display some web sites because this Firefox version is obsolete.

I can't upgrade Firefox because the IMac is a bit old and it does not support a required Mac OS upgrade.

I know that I have to replace my IMac to run newer version of Firefox but I do not understand why on my machine I can perfectly acces the web sites using Chrome (not possible with Firefox 78.15) .

I don't necessarily expect a response because I understand the need for upgrades, but as a long-time Firefox

user I remain surprised to see that Chrome allows me to do what Firefox can no longer do on  that old

machines.

Thank you for reading my message,

Alan

[tate]

This happens because Firefox 78.15 ESR (Extended Support Release) was the last version supporting macOS 10.11. Mozilla stopped supporting macOS 10.9–10.11 in Firefox 79, and users on these systems only received updates on the Firefox 78 ESR branch until November 2021. On the other hand, Google Chrome continued to support macOS 10.11 until Chrome 104, released in August 2022. This means Chrome users on macOS 10.11 got updates and security patches for a longer time compared to Firefox users. Because of this, Chrome can still handle newer web technologies, while Firefox 78.15, being outdated, struggles to display certain websites properly.