The Mozilla Blog (Archived)

Dispatches from the Internet frontier.
Categories: Firefox Mozilla News

Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and Customizable Browsing Experience to More Than 400 Million Users Worldwide

403 responses

Mozilla, a global, nonprofit organization dedicated to making the Web better, is proud to release Mozilla Firefox 4, the newest version of the popular, free and open source Web browser. Firefox puts users in control of their Web experience, providing a streamlined user interface, fun new features, a boost in speed and support for modern Web technologies.

Firefox 4 is available to download for Windows, Mac OS X and Linux in more than 80 languages. Firefox 4 will also be available on Android and Maemo devices soon.

Firefox 4 is the fastest Firefox yet. With dramatic speed and performance advancements across the board, Firefox is between two and six times faster than previous releases. Major enhancements to the JavaScript engine make everything from startup time to page load speed to graphics and JavaScript performance screaming fast in Firefox.

The latest version of Firefox introduces a sleek new look that lets Web content take center stage. With features like App Tabs and Panorama, Firefox makes it easier and more efficient to navigate the Web. Firefox delivers industry-leading privacy and security features like Do Not Track and Content Security Policy to give users control over their personal data and protect them online.

Firefox Sync gives users access to their Awesome Bar history, bookmarks, open tabs and passwords across computers and mobile devices. Firefox also offers hundreds of thousands of add-ons, extensions and Personas and a new Firefox Add-ons Manager to make it easy for users to manage and discover add-ons to customize their Web experience.

Firefox supports modern Web technologies, including HTML5. These technologies are the foundation for building amazing websites and Web applications. Go to Web O’ Wonder and check out the incredible online experiences developers can now create.

==============================================================
What’s New in Firefox 4:

Fastest Firefox Ever

  • Performance: Firefox is up to six times faster than the previous release. With improved start-up and page load times, speedy Web app performance and hardware accelerated graphics, Firefox is optimized for rich, interactive websites.

Streamlined Interface

  • App Tabs: give a permanent home to frequently visited sites like Web mail, Twitter, Pandora, Flickr.
  • Switch to Tab: easily find and switch to any open tab from your Awesome Bar without opening duplicate tabs.
  • Panorama: drag and drop tabs into manageable groups to save time while navigating many open tabs.

Private and Secure Synchronization

  • Firefox Sync: access your Awesome Bar history, bookmarks, open tabs, passwords and form data across multiple computers and mobile devices.

Most Customizable

Private and Secure

  • Do Not Track: Firefox is leading the Web towards a universal standard Do Not Track feature that allows users to opt-out of tracking used for behavioral advertising.
  • Firefox puts privacy first, fixing flaws in some Web standards to prevent others from accessing your browser history.
  • HTTP Strict Transport Security (HSTS): automatically establishes secure connections to stop “man in the middle” attacks and keep sensitive data safe from interception during the log-in process.
  • Content Security Policy (CSP): prevent cross-scripting attacks by allowing sites to explicitly tell the browser which content is legitimate.

Cutting Edge Tools for Web Developers:

  • The JavaScript engine incorporates the new JägerMonkey JIT compiler, along with enhancements to the existing TraceMonkey JIT and SpiderMonkey’s interpreter for faster page-load speed and better performance of Web apps and games.
  • HTML5 support in Firefox includes hardware accelerated, high-definition video (WebM), 3D graphics, offline data storage, professional typography, touchscreen interfaces and the Mozilla Audio API to help create visual experiences for sound and more.
  • Firefox 4 also improves existing tools like CSS, Canvas and SVG to enable developers to make exciting Web pages.
  • Firefox provides uninterrupted browsing when there is a crash in the Adobe Flash, Apple QuickTime or Microsoft Silverlight plugins. If one of these plugins crashes or freezes, it won’t affect the rest of Firefox. Simply reload the page to restart the plugin.

 
For more information:

403 comments on “Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and Customizable Browsing Experience to More Than 400 Million Users Worldwide”

  1. Ping from Watch Firefox 4.0 Launch Live, 360,000 Downloads Already - News | Free Software and Shareware Downloads on

    […] UPDATE: Firefox 4.0 has been officialy launched. […]

  2. Ping from Firefox 4 Has Arrived | Korduna on

    […] ambitious release for Mozilla, Firefox 4 promises to be not only faster than previous releases — but also more streamlined. We’ve […]

  3. Ping from Firefox 4 « Ray's Rants on

    […] Firefox 4 is officially released today by our friends at Mozilla, and it is awesome. Install or upgrade now. […]

  4. Ping from Релиз Firefox 4.0. Обзор новшеств | Клуб Системных Администраторов on

    […] 14 месяцев разработки официально представлен релиз web-браузера Firefox 4.0. Среди ключевых изменений: […]

  5. Ping from Firefox 4 Has Arrived | Michael Reinstein on

    […] ambitious release for Mozilla, Firefox 4 promises to be not only faster than previous releases — but also more streamlined. […]

  6. Ping from Firefox 4 正式版发布 - 小众软件 on

    […] Firefox 4 与 Opera Mini 商量好差不多一起发布的，主打更加个性化，更快，更安全。@Appinn […]

  7. Ping from Descarga Firefox 4, versión final. | Aulavirtual.org.mx on

    […] Aquellos que lo deseen pueden acceder a completa información sobre sus novedades y características desde las notas de lanzamiento de Firefox 4 o desde blog.mozilla.org. […]

  8. Ping from » Firefox 4 is finally released Daedaleus on

    […] been using it for quite some time, but it’s good to see it finally out there officially. Maybe now Firefox can staunch the bleeding of users into Chrome-land. The way I see it, Chrome now […]

  9. Ping from Firefox 4 Has Arrived | Take A Plunge on

    […] release by Mozilla, Firefox 4 promises many things- faster than previous releases and more streamlined. There are some major […]

  10. Ping from Mozilla introduces Firefox 4 with new streamlined design - Techbalita.com | Techbalita.com on

    […] And now, when a plugin like Adobe Flash crashes, users won’t have to restart Firefox. Users can simply reload the page to restart the plugin. There’s also improved support for CSS, Canvas and SVG for web developers who want to keep their web sites on the cutting edge. There are also over 200,000 add-ons available continuing Firefox’s tradition of making the browser fully customizable and a personal experience. Users can download Firefox 4 at GetFirefox.com. […]

  11. Ping from Firefox 4 Heats Up the Browser Wars « system-ON-key on

    […] new browser version was announced on the Mozilla blog in a post lengthily titled “Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and […]

  12. Ping from Firefox 4 Has Arrived | Economics of Android on

    […] ambitious release for Mozilla, Firefox 4 promises to be not only faster than previous releases — but also more streamlined. […]

  13. Ping from Mozilla introduces Firefox 4 with new streamlined design on

    […] And now, when a plugin like Adobe Flash crashes, users won’t have to restart Firefox. Users can simply reload the page to restart the plugin. There’s also improved support for CSS, Canvas and SVG for web developers who want to keep their web sites on the cutting edge. There are also over 200,000 add-ons available continuing Firefox’s tradition of making the browser fully customizable and a personal experience. Users can download Firefox 4 at GetFirefox.com. […]

  14. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? « CIA Hotel News on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  15. Ping from Why Firefox has arrived « Abrition on

    […] ambitious release for Mozilla, Firefox 4 promises to be not only faster than previous releases — but also more streamlined. We’ve […]

  16. Ping from » Mozilla introduces Firefox 4 with new streamlined design » GADGET READER on

    […] And now, when a plugin like Adobe Flash crashes, users won’t have to restart Firefox. Users can simply reload the page to restart the plugin. There’s also improved support for CSS, Canvas and SVG for web developers who want to keep their web sites on the cutting edge. There are also over 200,000 add-ons available continuing Firefox’s tradition of making the browser fully customizable and a personal experience. Users can download Firefox 4 at GetFirefox.com. […]

  17. Ping from Firefox 4 is here | CheckSwag on

    […] new browser version was announced on the Mozilla blog in a post lengthily titled “Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and […]

  18. Ping from Web Resoruces & Web Certificated Adobe CS5 / RIA » ¡Hola mundo! on

    […] Aquellos que lo deseen pueden acceder a completa información sobre sus novedades y características desde las notas de lanzamiento de Firefox 4 o desde blog.mozilla.org. […]

  19. Ping from Firefox 4 Has Arrived | World's Greatest T-Shirt on

    […] ambitious release for Mozilla, Firefox 4 promises to be not only faster than previous releases — but also more streamlined. […]

  20. Ping from Mozilla Officially Launches Firefox 4 | Jermad14.com on

    […] JavaScript performance screaming fast in Firefox.Here are some of the new features as posted on the Official Mozilla Blog:Up to six times faster than Firefox 3App tab – pin most frequently visited sitesPanorama – […]

  21. Ping from “Firefox 4″ oficialus pasirodymas ir naujos galimybės [VIDEO] | SkaitykIT – interneto naujienos, programavimo pamokos, tinklalapių kūrimas, turinio valdymo sistemos on

    […] šaltinis: Blog.mozilla.com * * * Norite gauti Skaitykit.lt naujienas operatyviau? Prenumeruokite RSS įrašus Jei […]

  22. Ping from Firefox 4 is ‘glowing’? | KristallizeR on

    […] seems Firefox 4 was finally launched yesterday after a relatively long development cycle. Mozilla claims that this latest (and greatest?) version “is between two and six times faster than previous […]

  23. Ping from Web Resoruces & Web Certificated Adobe CS5 / RIA » NUEVO FIREFOX 4 on

    […] Aquellos que lo deseen pueden acceder a completa información sobre sus novedades y características desde las notas de lanzamiento de Firefox 4 o desde blog.mozilla.org. […]

  24. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? | rosaalatore on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  25. Ping from The Morning Brew - Chris Alcock » The Morning Brew #818 on

    […] Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and Customizable Browsing Experience to More T… – The Mozilla Firefox team have released Firefox 4, the latest version of their browser product. This version gives a boost to the performance of Firefox, along with introducing a new streamlined UI and much more. […]

  26. Ping from Firefox réalise 3,5 millions de téléchargements en une heure | Le blog des nouvelles technologies : Web, Technologies, Développement, Interopérabilité on

    […] « Firefox 4 is the fastest Firefox yet. With dramatic speed and performance advancements across the board, Firefox is between two and six times faster than previous releases », bloguait Mozilla. […]

  27. Ping from Mozilla Launches Firefox 4 | wisnuaji dot com on

    […] blog.mozilla.org to know more about Mozilla Firefox […]

  28. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? – Okemo View Lodge on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It's been […]

  29. Ping from Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and … | Write A Blog on

    […] Filter by Dates & Max Items original copy This entry was posted in Articles. Bookmark the permalink. ← Bourne Blog: 4 simple tips […]

  30. Ping from Firefox 4 Has Arrived, on Gadget News Update | Gadget News on

    […] ambitious release f&#959r Mozilla, Firefox 4 promises t&#959 b&#1077 n&#959t &#959n&#406&#1091 f&#1072&#1109t&#1077r th&#1072n previous releases […]

  31. Ping from Jagat Review | Mozilla Firefox 4: Enam Kali Lebih Cepat! on

    […] Mozilla Blog Permalink | More about: App Tab, browser, Firefox 4, internet, mozilla, panorama, […]

  32. Ping from Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and … | Write A Blog on

    […] Filter by Dates & Max Items original copy This entry was posted in Articles. Bookmark the permalink. ← […]

  33. Ping from Mozilla introduces Firefox 4 with new streamlined design | Gadgets Galore on

    […] And now, when a plugin like Adobe Flash crashes, users won’t have to restart Firefox. Users can simply reload the page to restart the plugin. There’s also improved support for CSS, Canvas and SVG for web developers who want to keep their web sites on the cutting edge. There are also over 200,000 add-ons available continuing Firefox’s tradition of making the browser fully customizable and a personal experience. Users can download Firefox 4 at GetFirefox.com. […]

  34. Ping from Mozilla lanza Firefox 4 | Todo es cuestion de gustos on

    […] Firefox 4 para Windows, Mac y Linux en más de 80 idiomas. Además, la compañía asegura en su blog que habrá disponible “pronto” una versión para dispositivos Android y […]

  35. Ping from Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and … | Write A Blog on

    […] Tip To: Filter by Dates & Max Items original copy This entry was posted in Articles. Bookmark the permalink. ← Gameday Blog: Bruins vs. […]

  36. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? | Accompagnement Startup on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  37. Ping from Firefox 4 is Here, and it’s Fast on

    […] yesterday Mozilla released version four of Firefox, bringing with it a new UI and many changes under the hood. It looks and […]

  38. Ping from Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and … | Write A Blog on

    […] Filter by Dates & Max Items original copy This entry was posted in Articles. Bookmark the permalink. ← Google Chrome Blog: Talking […]

  39. Ping from What Privacy Features Did Mozilla Include in the New Firefox? on

    […] has released Firefox 4 to the public after 12 public betas, two release candidates, and nearly a year of […]

  40. Ping from What Privacy Features Did Mozilla Include in the New Firefox? | Custom Facebook Fan Page Layouts on

    […] has released Firefox 4 to the public after 12 public betas, two release candidates, and nearly a year of […]

  41. Ping from CAT Hammers Walk Around | My Cat World on

    […] Mozilla Launches Firefox 4 &#1072&#1495&#1281 Delivers a F&#1072&#1109t, Sleek &#1072&#1495&#1281 &#… […]

  42. Ping from Lowest Prices on iPhone Stuff » Post Topic » Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  43. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? » Xitul on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  44. Ping from Mozilla Launches Firefox 4 | Gizmoji on

    […] releases Mozilla Firefox 4 and it is faster than previous version and also more streamlined. The newest […]

  45. Ping from Firefox 4 Is Certainly Zippy, But Is That Enough To Switch Back From Chrome? | addwaredeleter.com on

    […] of its previous versions compared to Chrome, Safari, and IE9. But the new Firefox 4, which Mozilla claims is 6 times as fast as before, puts it back in the same pack at least as the rest. It’s been […]

  46. Ping from Firefox 4 right away accessible to download | MichelleBellyDance.Com on

    […] “Firefox 4 is the fastest Firefox yet. With thespian speed as well as opening advancements opposite the board, Firefox is in between dual as well as 6 times faster than prior releases. Major enhancements to the JavaScript engine have all from start-up time as well as page bucket speed to graphics as well as JavaScript opening screaming quick in Firefox,” said Mozilla in the blog post. […]

  47. Ping from Mozilla Launches Firefox 4 and Delivers a Fast, Sleek and … | Write A Blog on

    […] Filter by Dates & Max Items original copy This entry was posted in Articles. Bookmark the permalink. ← Editor’s Blog: Health […]

  48. Ping from Firefox 4 Now Available on

    […] Official News at Mozilla Blog Like on Facebook! Tags: Firefox, Firefox 4, Internet, Mozilla, Web […]

  49. Ping from Firefox 4 ya se encuentra disponible - Que 2.0 on

    […] Vía | Mozilla […]

  50. Ping from Firefox 4 正式版发布 | 小众软件 > Firefox | 九九辅导网 on

    […] Firefox 4 与 Opera Mini 商量好差不多一起发布的，主打更加个性化，更快，更安全。@Appinn […]

More comments: 1 2 3 4 5 6 … 9