Firefox Returns to X After Nearly 18 Months of Pretending It Didn’t Need X piu )Jul 21, 2026 210 browsers , twitter+x , social-media Firefox 152 Release Notes for Developers (Stable) mdn )Jun 16, 2026 209 release-notes , browsers Session History Diagrams in Firefox DevTools f )Jun 1, 2026 208 dev-tools , browsers New to the Web Platform in May rac )May 29, 2026 207 release-notes , web-platform , browsers , safari , chrome Saying Goodbye to asm.js eqr /spi )May 20, 2026 206 spidermonkey , javascript-engines , javascript , browsers Firefox 151 Release Notes for Developers (Stable) mdn )May 19, 2026 205 release-notes , browsers Firefox Gains 6 Million Users Since EU Browser Choice Screen Rules Took Effect May 17, 2026 204 browsers , legal Safari and Firefox Change How Big Sites Render Based on the Domain. TikTok, Netflix, Instagram… Even Seatguru. Chrome Doesn’t. Why Is That? den )May 14, 2026 203 safari , browsers , customization , rendering Six Million Selections Later: How the DMA Is Giving People Browser Choice gem +/moz )May 11, 2026 202 legal , browsers Behind the Scenes Hardening Firefox With Claude Mythos Preview fre +/moz )May 7, 2026 201 browsers , security , claude , ai Trustworthy JavaScript for the Open Web moz )May 5, 2026 200 javascript , security , open-web , browsers New to the Web Platform in April rac )Apr 24, 2026 199 release-notes , web-platform , browsers , chrome , safari The Zero-Days Are Numbered moz )Apr 21, 2026 198 security , browsers , ai , anthropic Installing Every* Firefox Extension jw )Apr 9, 2026 197 browsers , browser-extensions , overviews New to the Web Platform in March rac )Mar 27, 2026 196 release-notes , web-platform , browsers , safari , chrome Try Tab Notes in Firefox to Leave a Note on Any Page gph /moz )Mar 23, 2026 195 browsers Hardening Firefox With Anthropic’s Red Team moz )Mar 6, 2026 194 browsers , ai , anthropic New to the Web Platform in February rac )Feb 26, 2026 193 release-notes , web-platform , browsers , chrome , safari Firefox 148 Brings Central AI Control and New Web Standards hei )Feb 24, 2026 192 browsers Goodbye “innerHTML”, Hello “setHTML”: Stronger XSS Protection in Firefox 148 moz )Feb 24, 2026 191 javascript , methods , xss , security , browsers New to the Web Platform in January rac )Jan 30, 2026 190 release-notes , web-platform , browsers , chrome Just the Browser cor )Jan 13, 2026 189 websites , browsers , chrome , edge Mozilla’s Next Chapter: Building the World’s Most Trusted Software Company moz )Dec 16, 2025 188 mozilla , browsers , ai New to the Web Platform in December rac )Dec 16, 2025 187 release-notes , web-platform , browsers , chrome , safari 2025 in Review: What’s New in Web Performance? mat /deb )Dec 5, 2025 186 performance , web-vitals , lighthouse , apis , speculation , chrome , browsers , dev-tools , tooling , testing , mcp , ai , retrospectives , outlooks New to the Web Platform in November rac )Nov 26, 2025 185 release-notes , web-platform , browsers , safari Firefox Is Adding Support for a Feature That Users Requested Since 2004 Nov 17, 2025 184 browsers , keyboard-shortcuts Firefox 147 Release Notes for Developers mdn )Nov 11, 2025 183 release-notes , browsers New to the Web Platform in October rac )Oct 30, 2025 182 release-notes , web-platform , browsers , chrome See What’s New in Firefox [144.0] fir )Oct 14, 2025 181 release-notes , browsers Interop Feature Ranking jaf /fir )Oct 9, 2025 180 websites , interoperability , browsers New to the Web Platform in September rac )Oct 1, 2025 179 release-notes , web-platform , browsers , safari , chrome Browsing, Rewired: My Dive Into the AI Browser Frontier Sep 16, 2025 178 browsers , ai , dia , edge , chrome , safari , brave , opera , orion , comparisons Chrome Mask: Make Firefox Appear as Chrome With a Single Click Sep 8, 2025 177 chrome , browsers , browser-extensions Experimental: Firefox Now Supports Progressive Web Apps on Windows Aug 22, 2025 176 browsers , progressive-web-apps , web-apps Firefox 142 for Developers mdn )Aug 20, 2025 175 release-notes , browsers Mozilla Under Fire for Firefox AI “Bloat” That Blows Up CPU and Drains Battery neo )Aug 9, 2025 174 mozilla , browsers , ai , performance New to the Web Platform in July rac )Jul 31, 2025 173 release-notes , web-platform , browsers Shipping WebGPU on Windows in Firefox 141 jbl /moz )Jul 15, 2025 172 webgpu , browsers , windows New to the Web Platform in June rac )Jun 30, 2025 171 release-notes , web-platform , browsers , chrome , safari New to the Web Platform in May rac )May 29, 2025 170 release-notes , web-platform , browsers , chrome , safari Mozilla Say Google Search Deal Vital to Firefox’s Survival d0o /omg )May 5, 2025 169 mozilla , browsers , google New to the Web Platform in April rac )Apr 30, 2025 168 release-notes , web-platform , browsers , chrome , safari Firefox 137.0.2 Is a Big Bug Fix and Security Update Release Apr 15, 2025 167 browsers Firefox Release Notes [Firefox 137.0] moz )Apr 1, 2025 166 release-notes , browsers New to the Web Platform in March rac )Mar 31, 2025 165 release-notes , web-platform , browsers , safari , chrome Firefox 136 Launches With Vertical Tabs, but One Requested Feature Is Still Missing Mar 4, 2025 164 browsers Mozilla Updates Firefox Terms Again After Backlash Over Broad Data License Language the )Mar 1, 2025 163 mozilla , browsers , licensing New to the Web Platform in February rac )Feb 28, 2025 162 release-notes , web-platform , browsers , chrome , safari Firefox: Mozilla Confirms Support for Classic Extensions and Manifest V3 Add-Ons Feb 26, 2025 161 mozilla , browsers , browser-extensions Browsers: A Snapshot bry )Feb 25, 2025 160 browsers , browser-extensions , chromium , edge , brave , safari Firefox 135 Launches With New Translation Languages, New Tab Layout, Security, and Privacy Improvements Feb 4, 2025 159 browsers New to the Web Platform in January rac )Jan 29, 2025 158 release-notes , web-platform , browsers , chrome , safari Running Inference in Web Extensions tar /moz )Jan 22, 2025 157 browsers , ai New to the Web Platform in November rac )Nov 28, 2024 156 release-notes , web-platform , browsers , chrome 20 Years of Firefox: How a Community Project Changed the Web moz )Nov 18, 2024 155 browsers , history , anniversaries New to the Web Platform in October rac )Oct 30, 2024 154 release-notes , web-platform , browsers , chrome , safari Celebrating 20 Years of Firefox fir )Oct 28, 2024 153 videos , anniversaries , browsers New to the Web Platform in September rac )Sep 30, 2024 152 release-notes , web-platform , browsers , chrome , safari Feature Detecting Scroll-Driven Animations With “@supports”: You Want to Check for “animation-range” Too bra )Sep 24, 2024 151 css , feature-detection , support , animations , browsers Firefox DevTools Newsletter 130 nic /fir )Sep 23, 2024 150 release-notes , browsers , dev-tools New to the Web Platform in August rac )Aug 29, 2024 149 release-notes , web-platform , browsers , chrome The Dying Web mre )Aug 8, 2024 148 browsers , chrome , chromium , web Announcing Official Puppeteer Support for Firefox moz )Aug 7, 2024 147 browsers , puppeteer , support New to the Web Platform in July rac )Jul 30, 2024 146 release-notes , web-platform , browsers , safari , chrome How to Try Experimental CSS Features hui )Jul 5, 2024 145 how-tos , css , browsers , safari , chrome New to the Web Platform in June rac )Jun 26, 2024 144 release-notes , web-platform , browsers , chrome , safari What Is the Best Browser for Privacy? Jun 18, 2024 143 browsers , privacy , comparisons , brave , tor-browser , vivaldi , epic Firefox DevTools Newsletter 127 nic /fir )Jun 18, 2024 142 release-notes , browsers , dev-tools See What’s New in Firefox [127.0] moz )Jun 11, 2024 141 release-notes , browsers Display the Specificity of a CSS Selector pat /dev )Jun 4, 2024 140 css , selectors , cascade , dev-tools , browsers , chrome , edge , safari New to the Web Platform in May rac )May 29, 2024 139 release-notes , web-platform , browsers , chrome , safari Here’s What We’re Working on in Firefox moz )May 21, 2024 138 browsers New to the Web Platform in April rac )Apr 29, 2024 137 release-notes , web-platform , browsers , chrome , safari New to the Web Platform in March rac )Mar 28, 2024 136 release-notes , web-platform , browsers , safari , chrome Bugs I’ve Filed on Browsers nol )Mar 3, 2024 135 browsers , chromium , webkit , quality New to the Web Platform in February rac )Feb 29, 2024 134 release-notes , web-platform , browsers , chrome , safari Why I Use Firefox sim )Feb 26, 2024 133 browsers New to the Web Platform in January rac )Jan 30, 2024 132 release-notes , web-platform , browsers , chrome , safari Mozilla Says Apple’s New Browser Rules Are “as Painful as Possible” for Firefox ver )Jan 26, 2024 131 browsers , apple , mozilla , mobile Battle of the Browsers zer )Jan 22, 2024 130 browsers , browser-engines , blink , chrome , edge , brave , gecko , webkit , safari , comparisons Navigating JavaScript Security: Recompiling Firefox to Bypass Anti-Debugger Techniques gli )Jan 20, 2024 129 javascript , security , debugging , browsers Chrome Alternative Browsers to Check Out in 2024 Jan 11, 2024 128 browsers , arc , chromium , orion New to the Web Platform in December rac )Dec 19, 2023 127 release-notes , web-platform , browsers , chrome , safari See What’s New in Firefox [121.0] moz )Dec 19, 2023 126 release-notes , browsers How to Enable Experimental CSS and JS Features in Chrome, Firefox, and Safari zor /css )Dec 11, 2023 125 videos , how-tos , experiments , browsers , chrome , safari New to the Web Platform in November rac )Nov 30, 2023 124 release-notes , web-platform , browsers , chrome Firefox on the Brink? bry )Nov 30, 2023 123 browsers Prodding Firefox to Update “:has()” Selection mey )Oct 19, 2023 122 css , selectors , support New to the Web Platform in July rac )Jul 31, 2023 121 release-notes , web-platform , browsers , chrome , safari See What’s New in Firefox [115.0] moz )Jul 4, 2023 120 release-notes , browsers New to the Web Platform in June rac )Jun 30, 2023 119 release-notes , web-platform , browsers , chrome , safari New to the Web Platform in May rac )May 31, 2023 118 release-notes , web-platform , browsers , chrome , safari See What’s New in Firefox [113.0] moz )May 9, 2023 117 release-notes , browsers New to the Web Platform in April rac )Apr 28, 2023 116 release-notes , web-platform , browsers , chrome Firefox May Soon Reject Cookie Prompts Automatically Apr 17, 2023 115 cookies , legal , user-experience Firefox Rolls Out Total Cookie Protection by Default to More Users Worldwide moz )Apr 11, 2023 114 browsers , cookies , privacy New to the Web Platform in March rac )Mar 31, 2023 113 release-notes , web-platform , browsers , chrome , safari XUL Layout Is Gone Mar 30, 2023 112 history , xul , browsers Some Cross-Browser DevTools Features You Might Not Know css )Mar 22, 2023 111 dev-tools , browsers , chrome , safari New to the Web Platform in January rac )Jan 31, 2023 110 release-notes , web-platform , browsers , chrome , safari Best Browsers For Developers in 2023 tal )Jan 22, 2023 109 browsers , comparisons , polypane , brave , chrome Cache the World: Turbo Charging Firefox Accessibility Performance and Maintainability jcs )Dec 22, 2022 108 browsers , accessibility , caching Improving Firefox Stability With This One Weird Trick moz )Nov 22, 2022 107 browsers Firefox-Only CSS ami )Nov 17, 2022 106 css , browsers Significant Improvements for Screen Readers Now in Nightly Firefox moz )Nov 15, 2022 105 browsers , screen-readers , accessibility Firefox (and Other Browsers), Forgotten? col )Jul 30, 2022 104 browsers , testing Use Firefox for Accessibility Testing col )Jul 17, 2022 103 browsers , accessibility , testing Mozilla Firefox Hits Back, Says Twitter Singled Out Its Web Browser Apr 5, 2022 102 mozilla , browsers , twitter+x , privacy Version 100 in Chrome and Firefox moz )Feb 15, 2022 101 browsers , support , chrome What’s New in DevTools? pat /sma )Jan 26, 2022 100 dev-tools , browsers , chrome , edge , safari How to Customize Firefox UI—Step-by-Step Tutorial Dec 10, 2021 99 how-tos , tutorials , xul , browsers , customization Firefox’s “bolder” Default Is a Problem for Variable Fonts sim /css )Sep 7, 2021 98 css , fonts , variable-fonts , browsers What’s New With DevTools: Cross-Browser Edition pat /sma )Sep 7, 2021 97 dev-tools , browsers , chrome , edge , safari Looking Fine With Firefox 89 chr /moz )Jun 1, 2021 96 release-notes , browsers Warp: Improved JS Performance in Firefox 83 jan /moz )Nov 13, 2020 95 browsers , javascript , performance , spidermonkey , javascript-engines A Guide to New and Experimental CSS DevTools in Firefox vx /sma )Oct 10, 2019 94 guides , browsers , dev-tools Firefox 69—a Tale of Resize Observer, Microtasks, CSS, and DevTools chr /moz )Sep 3, 2019 93 release-notes , browsers How to Enable Experimental Web Platform Features in Chrome and Firefox mic )Jun 21, 2019 92 how-tos , experiments , web-platform , browsers , chrome Goodbye, EdgeHTML moz )Dec 6, 2018 91 edgehtml , gecko , browser-engines , browsers Firefox 63—Tricks and Treats moz )Oct 23, 2018 90 release-notes , browsers In Your Face, Passwords: Big Three Browsers All Adopt Authentication API Aug 1, 2018 89 security , authentication , webauthn , apis , edge , chrome , browsers Everything You Need to Know About the Plan to Kill Internet Passwords dav /giz )Jun 7, 2018 88 passwords , authentication , webauthn , chrome , browsers Firefox 60 Lands: It’s World’s First Browser to Give You Password-Free Logins, Says Mozilla zdn )May 10, 2018 87 mozilla , browsers , webauthn Inspecting Animations in DevTools fon /css )May 4, 2018 86 css , animations , dev-tools , browsers , chrome Optimizing CSS: Tweaking Animation Performance With DevTools Nov 23, 2017 85 css , animations , performance , optimization , dev-tools , browsers Firefox 54: E10S-Multi, WebExtension APIs, CSS “clip-path” moz )Jun 13, 2017 84 release-notes , browsers Firefox 53: Quantum Compositor, Compact Themes, CSS Masks, and More moz )Apr 19, 2017 83 release-notes , browsers Think You Know the Top Web Browsers? pet )Apr 13, 2017 82 metrics , browsers , chrome , safari , internet-explorer , opera , uc-browser Flex Layout Fail: Fixing Firefox’s Keyboard Accessibility Bug With the CSS Order Property zol )Jan 28, 2017 81 css , flexbox , layout , browsers , accessibility , source-order , bugs Chrome, Firefox, and Edge Add Support for New WebAssembly Format cam /sof )Mar 15, 2016 80 webassembly , support , browsers , chrome , edge Revisiting Firefox’s DevTools pat /sma )Dec 30, 2015 79 browsers , dev-tools Firefox 40: Profiling JavaScript Performance and More eli )Aug 25, 2015 78 browsers What’s New in Firefox 39 Jul 14, 2015 77 browsers What’s New in Firefox 38 eli )May 18, 2015 76 browsers Want Fancy Firefox Features? Secure Your Website sts /cne )Apr 14, 2015 75 browsers , http , security What’s New in Firefox 36: Android Debugging, HTTP/2 Support, and More eli )Feb 25, 2015 74 browsers What’s New in Firefox 35 cra )Jan 21, 2015 73 browsers What’s New in Firefox 34 cra )Dec 4, 2014 72 browsers What’s New in Firefox 33 eli )Oct 14, 2014 71 browsers Mozilla Relents, Says It Will Implement HTML5 DRM Solution in Firefox fre )May 14, 2014 70 mozilla , browsers , drm , eme Konqueror vs. Firefox May 2, 2014 69 browsers , konqueror , comparisons What’s New in Firefox 28 cra )Mar 26, 2014 68 browsers What’s New in Firefox 27 cra )Feb 11, 2014 67 browsers Despite Automatic Updates, Old Browsers Are Still a Problem edb /zdn )Jan 6, 2014 66 browsers , web-platform , security , chrome , internet-explorer , safari What’s New in Firefox 26 cra )Dec 11, 2013 65 browsers What’s New in Firefox 25 cra )Oct 31, 2013 64 browsers End of an Era as Firefox Bins “Blink” Tag the )Aug 7, 2013 63 browsers , html What’s New in Firefox 23 cra )Aug 7, 2013 62 browsers What’s New in Firefox 20 cra )Apr 5, 2013 61 browsers Firefox Raises the Online Privacy Bar With New Cookie Policy edb /zdn )Feb 24, 2013 60 browsers , cookies , privacy What’s New in Firefox 19 cra )Feb 20, 2013 59 browsers Hello Firefox, This Is Chrome Calling sla )Feb 4, 2013 58 chrome , browsers , webrtc What’s New in Firefox 18 cra )Jan 9, 2013 57 browsers Firefox 18 Beta Adds JavaScript Improvements, Retina Display Support tec )Nov 27, 2012 56 browsers Happy 10th Birthday Firefox! cra )Sep 26, 2012 55 browsers , anniversaries What’s New in Firefox 15 cra )Aug 29, 2012 54 browsers Firefox Beta 15 Supports the New Opus Audio Format moz )Jul 19, 2012 53 browsers , multimedia What’s New in Firefox 14 cra )Jul 18, 2012 52 browsers Turn Off Cache in Firefox When [You’re] Testing Jun 30, 2012 51 caching , browsers What’s New in Firefox 12 and Chrome 18 cra )Apr 25, 2012 50 browsers , chrome Mozilla Delivers Firefox 10 tec )Feb 1, 2012 49 mozilla , browsers What’s New in Firefox 10 cra )Feb 1, 2012 48 browsers What’s New in Firefox 9.0 cra )Dec 21, 2011 47 browsers What’s New in Firefox 8 cra )Nov 9, 2011 46 browsers Mozilla Release Firefox 5 cra )Jun 21, 2011 45 browsers , mozilla HTML5 Forms Validation in Firefox 4 mou )Nov 10, 2010 44 html , forms , validation , browsers Opera With Extensions: Now Can It Replace Firefox? smf /bet )Oct 28, 2010 43 opera , browsers , browser-extensions HTML5 Accessibility ste )Oct 8, 2010 42 websites , html , accessibility , browsers , support , chrome , internet-explorer , opera , safari Firefox Unveiled: Gecko Basic Data Flow Jun 15, 2010 41 browsers , gecko , browser-engines , parsing Firefox 4: CSS3 “calc()” moz )Jun 10, 2010 40 css , functions , browsers What’s Coming in Firefox 4.0 cra )May 17, 2010 39 browsers Firefox 4: The HTML5 Parser—Inline SVG, Speed, and More hsi /moz )May 11, 2010 38 html , svg , parsing , gecko , browsers Getting Users to Upgrade Their Browsers rey /aja )Apr 9, 2010 37 browsers , chrome , internet-explorer , safari , opera Eight Reasons to Choose Safari or Firefox mac )Dec 29, 2009 36 browsers , safari , comparisons Firefox 3.5 Is the World’s Most Popular Browser cra )Dec 22, 2009 35 browsers Web Open Font Format for Firefox 3.6 moz )Oct 20, 2009 34 fonts , woff , browsers HTML 5 Parser Lands in Gecko dal /aja )Jul 8, 2009 33 html , parsing , gecko , browser-engines , browsers Browser CSS Hacks pau )Apr 15, 2009 32 browsers , css , hacks , internet-explorer , opera , safari Firefox Support for CSS3 Multiple Backgrounds dal /aja )Mar 24, 2009 31 css , backgrounds , support , browsers Firefox 3.1 to Support HTML 5 Video and Audio bra /aja )Oct 27, 2008 30 browsers , multimedia , html “border-image”: No More Cutting Up Hell dal /aja )Aug 13, 2008 29 css , borders , images , webkit , browsers , support What’s the Fastest Way to Code a Loop in JavaScript? Jul 24, 2008 28 javascript , loops , performance , metrics , comparisons , browsers , camino , safari , opera , internet-explorer Browser Memory Footprints: Watching With Real Usage dal /aja )Jun 26, 2008 27 browsers , memory , safari , flock , opera , internet-explorer New YSlow With Firefox 3 Support sto )Jun 17, 2008 26 browser-extensions , release-notes , browsers , support Firefox 3 CSS and HTML Support Information Available Jun 16, 2008 25 browsers , support , html , css Two Hidden Features New in Firefox 3 sen )May 23, 2008 24 browsers The Browser Bunch joe /mac )Mar 31, 2008 23 browsers , unix-like , comparisons , safari , flock , camino , opera Firefox 3 Offers Numerous Features for Developers Mar 19, 2008 22 browsers Color Rendering Difference: Firefox vs. Safari chr /css )Feb 28, 2008 21 colors , rendering , comparisons , safari , browsers Firefox 3 Performance Gets a Boost Feb 25, 2008 20 browsers , opera , safari , internet-explorer , comparisons , metrics Cursing With JavaScript: Three Random Tips dal /aja )Feb 19, 2008 19 javascript , prototypejs , internet-explorer , browsers , pop-ups , tips-and-tricks The Great Browser JavaScript Showdown cod )Dec 19, 2007 18 javascript , performance , metrics , opera , safari , internet-explorer , browsers , comparisons Mozilla Hunting for Memory dal /aja )Nov 13, 2007 17 mozilla , browsers , mobile , memory Font Rendering Differences: Firefox vs. IE vs. Safari chr /css )Aug 29, 2007 16 css , fonts , rendering , internet-explorer , safari , browsers , comparisons CSS Selectors—Speed Myths Jul 10, 2007 15 css , selectors , performance , metrics , extjs , jquery , dojo , mootools , prototypejs , internet-explorer , safari , opera , browsers , comparisons , myths Firebug Tips and Tricks Apr 18, 2007 14 firebug , tips-and-tricks AJAX/DHTML Library Scorecard: How Cross Platform Are They? Mar 4, 2006 13 ajax , dhtml , libraries , browsers , support , internet-explorer , safari , opera The “ping” Attribute nza )Jan 18, 2006 12 html , attributes , browsers , privacy “<a ping>” Jan 17, 2006 11 browsers , html , privacy Cross Browser Compatibility Jan 17, 2006 10 browsers , interoperability , internet-explorer , netscape , opera Firebug Jan 12, 2006 9 websites , firebug , browsers , dev-tools Firefox Fans Promised Version 1.5 Tonight iai )Nov 29, 2005 8 browsers Firefox Takes the Good With the Bad Nov 4, 2005 7 browsers Websites Alienate Firefox Users Jun 23, 2005 6 browsers Mozilla’s New Array Methods nza )Jun 22, 2005 5 javascript , arrays , methods , mozilla , browsers Why I Won’t Use Firefox ppk )Jan 9, 2005 4 browsers Netscape Aims Beyond Firefox cne )Nov 17, 2004 3 netscape , browsers Don’t Be Fooled! Keep Internet Explorer at All Cost! plo )Nov 9, 2004 2 internet-explorer , browsers Go Firefox, Go jon )Sep 17, 2004 1 browsers 