Editing Firefox (section)

{{Short description|Free and open-source web browser developed by Mozilla}}
{{About|the web browser|other uses|Firefox (disambiguation)}}
{{Redirect|Phoenix (web browser)|the early-1990s web browser developed at the University of Chicago|Phoenix (tkWWW-based browser)}}
{{pp-protected|small=yes}}
{{Pp-move|small=yes}}
{{Use American English|date=May 2020}}
{{Use mdy dates|date=January 2024}}
{{Merge from|Firefox Lite|discussion=Talk:Firefox Lite#Firefox lite should be moved to the main Firefox page|date=May 2025}}

{{Infobox software
| name = Firefox <!-- Technical name; do not change -->
| title = Firefox
| logo = Firefox_logo,_2019.svg <!-- Please do not change to that fire-only logo. That logo is for the Firefox brand of products, not the Firefox browser. https://blog.mozilla.org/opendesign/firefox-the-evolution-of-a-brand/ -->
| logo size = 125px
| logo_caption = [[Firefox logo|Logo]] used since October 2019
| screenshot = 
| caption = Firefox 120 on [[Windows 11]]
| developer = {{ubl
  |[[Mozilla Foundation]] and its contributors
  |[[Mozilla Corporation]]
}}
| released = {{Start date and age|2004|11|9}}
| ver layout = stacked
| repo = <!-- Automatically filled; do not modify. -->
| programming language = [[C++]], [[JavaScript]], [[HTML]], [[C (programming language)|C]], [[Rust (programming language)|Rust]], and others<ref>{{cite news |url=https://www.infoworld.com/article/3165424/web-browsers/mozilla-binds-firefoxs-fate-to-the-rust-language.html |title=Mozilla binds Firefox's fate to the Rust language |last=Yegulalp |first=Serdar |date=February 3, 2017 |work=InfoWorld |access-date=August 19, 2017 |archive-url=https://web.archive.org/web/20170819063448/http://www.infoworld.com/article/3165424/web-browsers/mozilla-binds-firefoxs-fate-to-the-rust-language.html |archive-date=August 19, 2017 |url-status=live}}</ref><ref>{{Cite web |title=The Mozilla Firefox Open Source Project on Open Hub: Languages Page |url=https://www.openhub.net/p/firefox/analyses/latest/languages_summary |access-date=October 15, 2021 |website=openhub.net |archive-date=October 7, 2021 |archive-url=https://web.archive.org/web/20211007234007/https://www.openhub.net/p/firefox/analyses/latest/languages_summary |url-status=live}}</ref>
| operating system = {{ubl
  |[[Linux]]
  |[[macOS Catalina]] or later
  |[[Windows 10]] or  later
  |[[Android Lollipop]] or later<ref name="Firefox for Android upgrade FAQs">{{cite web |url=https://support.mozilla.org/en-US/kb/firefox-android-upgrade-faqs?redirectslug=firefox-preview-upgrade-faqs&redirectlocale=en-US |title=Firefox for Android upgrade FAQs |access-date=August 16, 2020 |archive-date=August 12, 2020 |archive-url=https://web.archive.org/web/20200812152044/https://support.mozilla.org/en-US/kb/firefox-android-upgrade-faqs?redirectslug=firefox-preview-upgrade-faqs&redirectlocale=en-US |url-status=live}}</ref>
  |[[iOS 15]] or later
  |[[iPadOS 15]] or later
}}
| included with = Various [[Unix-like]] operating systems
| engines = [[Gecko (software)|Gecko]], [[Quantum (Mozilla)|Quantum]], and [[SpiderMonkey]]; [[WebKit]] on iOS/iPadOS
| language count = 97
| language footnote = <ref name="languages" />
| genre = [[Web browser]]
| license = [[MPL 2.0]]<ref>{{cite web |url=https://www.mozilla.org/en-US/about/legal/eula/ |title=Mozilla |access-date=October 20, 2014 |archive-url=https://web.archive.org/web/20141021035640/https://www.mozilla.org/en-US/about/legal/eula/ |archive-date=October 21, 2014 |url-status=live}}</ref><ref name="Licensing-Policies" />
| website = {{url|https://www.mozilla.org/en-US/firefox/new/|mozilla.org/firefox}}
| standard = 
| AsOf = 
}}

'''Mozilla Firefox''', or simply '''Firefox''', is a [[Free and open-source software|free and open-source]]<ref name="LWNtrademark">{{cite web |url=https://lwn.net/Articles/118268/ |title=Debian and Mozilla – a study in trademarks |date=January 10, 2005 |website=[[LWN.net]] |archive-url=https://web.archive.org/web/20170801163012/https://lwn.net/Articles/118268/ |archive-date=August 1, 2017 |access-date=September 14, 2011 |author=Corbet, Jonathan |url-status=live}}</ref> [[web browser]] developed by the [[Mozilla Foundation]] and its subsidiary, the [[Mozilla Corporation]]. It uses the [[Gecko (software)|Gecko]] [[Browser engine|rendering engine]] to display web pages, which implements current and anticipated web standards.<ref>{{cite web |url=http://download-firefox.org/spread-firefox/gecko-layout-engine-and-mozilla-firefox/ |title=Gecko Layout Engine |date=July 17, 2008 |publisher=download-firefox.org |archive-url=https://web.archive.org/web/20100615131607/http://download-firefox.org/spread-firefox/gecko-layout-engine-and-mozilla-firefox/ |archive-date=June 15, 2010 |access-date=May 10, 2012}}</ref> Firefox is available for [[Windows 10]] or later versions of [[Microsoft Windows|Windows]], [[macOS]], and [[Linux]]. [[#Unofficial ports|Its unofficial ports]] are available for various [[Unix]] and [[Unix-like]] operating systems, including [[FreeBSD]],<ref name="FreeBSD ports">{{cite web |title=FreeBSD ports |url=https://svnweb.freebsd.org/ports/head/www/firefox/ |access-date=March 24, 2018 |archive-url=https://web.archive.org/web/20190323104221/https://svnweb.freebsd.org/ports/head/www/firefox/ |archive-date=March 23, 2019 |url-status=live}}</ref> [[OpenBSD]],<ref name="OpenBSD ports">{{cite web |title=OpenBSD ports |url=http://cvsweb.openbsd.org/cgi-bin/cvsweb/ports/www/mozilla-firefox/ |access-date=March 24, 2018 |archive-url=https://web.archive.org/web/20190120074628/http://cvsweb.openbsd.org/cgi-bin/cvsweb/ports/www/mozilla-firefox/ |archive-date=January 20, 2019 |url-status=live}}</ref> [[NetBSD]],<ref name="NetBSD pkgsrc">{{cite web |title=NetBSD pkgsrc |url=http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/www/firefox/ |access-date=October 31, 2018 |archive-url=https://web.archive.org/web/20181101015707/http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/www/firefox/ |archive-date=November 1, 2018 |url-status=live}}</ref> and other operating systems, such as [[reactOS]]. Firefox is also available for [[Firefox for Android|Android]] and [[Firefox for iOS|iOS]]. However, as with all other iOS web browsers, the iOS version uses the [[WebKit]] layout engine instead of Gecko due to platform requirements. An optimized version is also available on the [[Amazon Fire TV]] as one of the two main browsers available with [[Amazon Silk|Amazon's Silk Browser]].<ref>{{Cite web |title=Firefox for Fire TV |website=Amazon |url=https://www.amazon.com/Mozilla-Firefox-for-Fire-TV/dp/B078B5YMPD |url-status=live |archive-url=https://web.archive.org/web/20200707103351/https://www.amazon.com/Mozilla-Firefox-for-Fire-TV/dp/B078B5YMPD |archive-date=July 7, 2020 |access-date=July 17, 2020 }}</ref>

Firefox is the [[spiritual successor]] of [[Netscape Navigator]], as the [[Mozilla]] community was created by [[Netscape]] in 1998, before its acquisition by [[AOL]].<ref>{{cite news |url=http://www.cbc.ca/technology/technology-blog/2008/02/curtains-for-netscape.html |title=Curtains for Netscape – Tech Bytes |last=Jay |first=Paul |date=February 28, 2008 |publisher=CBC News |access-date=June 26, 2015 |archive-url=https://web.archive.org/web/20150705110100/http://www.cbc.ca/technology/technology-blog/2008/02/curtains-for-netscape.html |archive-date=July 5, 2015 |url-status=live}}</ref> Firefox was created in 2002 under the codename "Phoenix" by members of the Mozilla community who desired a standalone browser rather than the [[Mozilla Application Suite]] bundle. During its [[Software release life cycle#Beta|beta]] phase, it proved to be popular with its testers and was praised for its speed, security, and add-ons compared to [[Microsoft]]'s then-dominant [[Internet Explorer&nbsp;6]]. It was released on November 9, 2004,<ref>{{cite web |url=http://news.bbc.co.uk/1/hi/technology/3993959.stm |title=Firefox browser takes on Microsoft |date=November 9, 2004 |work=[[BBC News]] |archive-url=https://web.archive.org/web/20171220113953/http://news.bbc.co.uk/2/hi/technology/3993959.stm |archive-date=December 20, 2017}}</ref> and challenged [[Internet Explorer]]'s dominance with 60 million downloads within nine months.<ref>{{cite web |url=http://news.bbc.co.uk/1/hi/business/4508897.stm |title=The assault on software giant Microsoft |last=Weber |first=Tim |date=May 9, 2005 |work=[[BBC News]] |archive-url=https://web.archive.org/web/20170925233936/http://news.bbc.co.uk/2/hi/business/4508897.stm |archive-date=September 25, 2017}}</ref> In November 2017, Firefox began incorporating new technology under the code name "[[Quantum (Mozilla)|Quantum]]" to promote [[Parallel computing|parallelism]] and a more intuitive [[user interface]].<ref>{{Cite web |url=https://blog.mozilla.org/blog/2017/11/14/introducing-firefox-quantum/ |title=Introducing the New Firefox: Firefox Quantum |last=Mayo |first=Mark |date=November 14, 2017 |website=The Mozilla Blog |archive-url=https://web.archive.org/web/20180627114050/https://blog.mozilla.org/blog/2017/11/14/introducing-firefox-quantum/ |archive-date=June 27, 2018 |access-date=May 26, 2018}}</ref>

Firefox usage share grew to a peak of 32.21% in November 2009,<ref name="StatCounter">{{cite web |url=https://gs.statcounter.com/browser-market-share/desktop/worldwide/#monthly-200901-201301 |title=Desktop Browser Market Share Worldwide (Jan 2009 – Jan 2013) |last=StatCounter |website=gs.statcounter.com |access-date=October 23, 2021 |url-status=live |archive-date=October 11, 2017 |archive-url=https://web.archive.org/web/20171011022101/https://gs.statcounter.com/browser-market-share/desktop/worldwide#monthly-200901-201301}}</ref> with [[Firefox 3.5]] overtaking [[Internet Explorer 7]], although not all versions of Internet Explorer as a whole;<ref>{{Cite web |url=https://gs.statcounter.com/#browser_version-ww-weekly-200827-200951 |title=StatCounter Global Stats – Browser, OS, Search Engine including Mobile Usage Share |website=StatCounter Global Stats |access-date=July 14, 2018 |archive-url=https://archive.today/20120526/http://gs.statcounter.com/%23mobile_browser-ww-monthly-201012-201111-bar#browser_version-ww-weekly-200827-200951 |archive-date=May 26, 2012 |url-status=live}}</ref><ref>{{cite web |url=https://gs.statcounter.com/#browser_version-ww-monthly-200902-201006 |title=StatCounter global stats – Top 12 browser versions |publisher=StatCounter |access-date=March 12, 2010 |archive-url=https://archive.today/20120526/http://gs.statcounter.com/%23mobile_browser-ww-monthly-201012-201111-bar#browser_version-ww-monthly-200902-201006 |archive-date=May 26, 2012 |url-status=live}}</ref> its usage then declined in competition with [[Google Chrome]].<ref name="StatCounter" /> {{As of|2025|02}}, according to [[StatCounter]], it had a 6.36% [[Usage share of web browsers|usage share]] on traditional PCs (i.e. as a desktop browser), making it the fourth-most popular PC web browser after Google Chrome (65%), [[Microsoft Edge]] (14%), and [[Safari (web browser)|Safari]] (8.65%).<ref>{{Cite web |title=Desktop Browser Market Share Worldwide |url=https://gs.statcounter.com/browser-market-share/desktop/worldwide/#monthly-202502-202502-bar |access-date=March 5, 2025 |website=StatCounter Global Stats |language=en |archive-date= |archive-url= }}</ref>