''<p>deeppurplefedora [[#question-1493760|said]]</p>'' <blockquote>Hi! I have not thought about changes to Firefox and after speaking to someone I found out a potential change that I was not aware of. I have not been able to find a definitive (except AI generated) answer to confirm or deny his claim that Firefox switched over to Chrome/Chromium's web engine. My understanding is that they have always used their own being a FOSS alternative to major brands. I use 133.0.3 (64bit) Mozilla Firefox for Arch Linux archlinux - 1.0 (right now but updates are very common) Am I in reality using Chrome/Chromium just in different clothes, or is this still the same FOSS Firefox that I have been using for years? </blockquote> Firefox is most certainly not a Chrome or Chromium based web browser. Mozilla Firefox and the community effort SeaMonkey suite are using '''Gecko''' and not Blink. This would be very hot news in tech sites and forums all around including here and independent mozillaZine forums if it was indeed true that Mozilla changed from using Gecko to using Blink as the browser engine in Mozilla Firefox. Edge and Opera could have kept using their own browser engines but they decided to downgrade to being Chromium based due to using Blink browser engine. The only case where Firefox is not using Gecko is on iOS/iPadOS due to Apple's restrictions on what browser engine can be used as Firefox is basically a wrapper on webkit like other web browsers. Thankfully Apple does not have this restriction on macOS users. Though this could change at least for EU users due to https://developer.apple.com/support/alternative-browser-engines/ There have been some less technical users over the years that mistakenly thought Firefox was Chrome or had some Chrome it in because they see mention of chrome in some way like [http://kb.mozillazine.org/userChrome.css userChrome.css] or the chrome folder or saw a chrome:// url like mentioned in this old http://kb.mozillazine.org/Chrome_URLs article. This use of the word chrome existed long ago including when Mozilla suite existed in 1998? (now continued as SeaMonkey) and when the browser we know as Firefox existed as Phoenix 0.1 in 2002. The Google Chrome browser did not first exist until later September 2, 2008. From https://developer.mozilla.org/en-US/docs/Glossary/Chrome <blockquote>In a browser, the chrome is any visible aspect of a browser aside from the webpages themselves (e.g., toolbars, menu bar, tabs). This is not to be confused with the Google Chrome browser.</blockquote>