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63.0
Firefox Release
October 23, 2018
Version 63.0, first offered to Release channel users on October 23, 2018
new
fixed
- Performance and visual improvements for Windows users
- Moved the build infrastructure of Firefox on Windows to the Clang toolchain, bringing important performance gains
- Firefox theme now matches the Windows 10 OS Dark and Light modes
- Performance improvements for macOS users
- Improved reactivity
- Faster tab switching
- WebGL power preferences allow non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems
- Added content blocking, a collection of Firefox settings that offer users greater control over technology that can track them around the web. In 63, users can opt to block third-party tracking cookies or block all trackers and create exceptions for trusted sites that don’t work correctly with content blocking enabled.
- WebExtensions now run in their own process on Linux
- Firefox now warns about having multiple windows and tabs open when quitting from the main menu
- Firefox now recognizes the operating system accessibility setting for reducing animation
- Added search shortcuts for Top Sites: Amazon and Google appear as Top Sites tiles on the Firefox Home (New Tab) page. When selected these tiles will change focus to the address bar to initiate a search. Currently in US only.
changed
- Resolved an issue that prevented the address bar from autofilling bookmarked URLs in certain cases
developer
- In the Library, the Open in Sidebar feature for individual bookmarks was removed
- The option to Never check for updates was removed from about
references. You can use the DisableAppUpdate enterprise policy as a substitute. - The Ctrl+Tab shortcut now displays thumbnail previews of your tabs and cycles through tabs in recently used order. This new default behavior is activated only in new profiles and can be changed in preferences.
- Refreshed visual style of Developer Tools menus to improve navigation and consistency
- The Dev Tools accessibility inspector is now enabled by default. This tool surfaces information exposed to assistive technologies on the current page, allowing you to check what’s missing or otherwise needs attention.
- Added support for Web Components custom elements and shadow DOM
- The inspector now ships with a Font Editor that allows you to control non-variable as well as variable fonts
63.0.1
Firefox Release
October 31, 2018
Version 63.0.1, first offered to Release channel users on October 31, 2018
fixed
developer
- Snippets are not loaded due to missing element (bug 1503047)
- Print preview always shows 30% scale when it is actually Shrink To Fit (bug 1501952)
- Dialog displayed when closing multiple windows shows unreplaced %1$S placeholder in Japanese and potentially other locales (bug 1500823)
Developer Information
- Reference link to 63.0 release notes
63.0.3
Firefox Release
November 15, 2018
Version 63.0.3, first offered to Release channel users on November 15, 2018
fixed
- Games using WebGL (created in Unity) get stuck after very short time of gameplay (bug 1502748)
- Slow page loading for some users with specific proxy configurations (bug 1495024)
- Disable HTTP response throttling by default for causing bugs with videos in background tabs (bug 1503354)
- Opening magnet links no longer works (bug 1498934)
- Crash fixes (bug 1498510, bug 1503424)
64.0
Firefox Release
December 11, 2018
Version 64.0, first offered to Release channel users on December 11, 2018
Thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- Better recommendations: You may see suggestions in regular browsing mode for new and relevant Firefox features, services, and extensions based on how you use the web (for US users only)
- Enhanced tab management: You can now select multiple tabs from the tab bar and close, move, bookmark, or pin them quickly and easily
- Easier performance management: The new Task Manager page found at about
erformance lets you see how much energy each open tab consumes and provides access to close tabs to conserve power - Improved performance for Mac and Linux users, by enabling link time optimization (Clang LTO). (Clang LTO was enabled for Windows users in Firefox 63.)
- More seamless sharing on Windows: Windows users can now share web pages using the native sharing experience. You can access Share in the Page Actions menu
- Added option to remove add-ons using the context menu on their toolbar buttons
- New for enterprise users: Updated the policy engine on macOS to allow using configuration profiles to customize Firefox for enterprise deployments
changed
- Various security fixes
- RSS feed preview and live bookmarks are available only via add-ons
- TLS certificates issued by Symantec are no longer trusted by Firefox. Website operators are strongly encouraged to replace any remaining Symantec TLS certificates as soon as possible.
- about:crashes has been redesigned to make it clear when a crash is being submitted to Mozilla, as well as being clear that removing crashes locally does not remove them from crash-stats.mozilla.com
- The macOS keyboard shortcut to add "www" and ".com" to a URL is now ctrl-enter instead of [apple]-enter
64.0.2
Firefox Release
January 9, 2019
Version 64.0.2, first offered to Release channel users on January 9, 2019
fixed
- Fixed a browser crash on MacOS (bug 1510058)
- Updated the Japanese translation for missing strings (bug 1513259)
- Properly restore column sizes in developer tools inspector (bug 1503175)
- Fixed video stuttering on Youtube (bug 1513511)
- Fix updates for some lightweight themes (bug 1508777)
65.0
Firefox Release
January 29, 2019
Version 65.0, first offered to Release channel users on January 29, 2019
We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- Enhanced tracking protection: Simplified content blocking settings give users standard, strict, and custom options to control online trackers. A redesigned content blocking section in the site information panel (viewed by expanding the small “i” icon in the address bar) shows what Firefox detects and blocks on each website you visit. To learn more about content blocking, visit the Mozilla Blog.
- A better experience for multilingual users: An updated Language section in Preferences allows users to install multiple language packs and order language preferences for Firefox and websites, without having to download locale-specific versions.
- Support for Handoff on macOS: Continue browsing across devices. Pick up where you left off with iOS (via Firefox or Safari) on Firefox on Mac.
- A better video streaming experience for Windows users: Firefox now supports the next-generation, royalty-free video compression technology called AV1. Read about Mozilla’s contribution to this new open standard.
- Improved performance and web compatibility, with support for the WebP image format: WebP brings the same image quality as existing formats at smaller file sizes, which saves bandwidth and speeds up page load.
changed
- Various security fixes.
enterprise
- Enhanced security for macOS, Linux, and Android users via stronger stack smashing protection which is now enabled by default for all platforms. "Stack smashing" is a common security attack in which malicious actors corrupt or take control of a vulnerable program.
- Firefox will now warn you when closing a window (regardless of whether you have automatic session restore enabled for restart).
- Easier performance management: The revamped Task Manager page found at about
erformance now reports memory usage for tabs and add-ons. - Improved the pop-up blocker to prevent multiple pop-up windows from being opened by websites at the same time.
developer
- Firefox for Windows is now available with 32- and 64-bit MSI installers for easier enterprise deployments.
- Additional support for Flexbox: Launched a new Flexbox inspector tool that details Flexbox containers and helps debug Flex item sizes.
- All CSS changes made in the Rules panel are now tracked in the new Changes tab.
- Added support for the Storage Access API on desktop platforms.
65.0.1
Firefox Release
February 12, 2019
Version 65.0.1, first offered to Release channel users on February 12, 2019
fixed
- Fixed accidental requests to addons.mozilla.org when an addon recommendation doorhanger is shown (bug 1526387)
- Improved playback of interactive Netflix videos (bug 1524500)
- Fixed color management not working on macOS (bug 1506495)
- Fixed incorrect sizing of the "Clear Recent History" window in some situations (bug 1523696)
- Fixed audio & video delays while making WebRTC calls (bug 1521577 & bug 1523817)
- Fixed video sizing problems during some WebRTC calls (bug 1520200)
- Fixed looping CONNECT requests when using WebSockets over HTTP/2 from behind a proxy server (bug 1523427)
- Fixed the "Enter" key not working on password entry fields for certain Linux distributions (bug 1523635)
- Various stability and security fixes.
65.0.2
Firefox Release
February 28, 2019
Version 65.0.2, first offered to Release channel users on February 28, 2019
fixed
- Fixed an issue with geolocation services affecting Windows users
Firefox Release
March 19, 2019
Version 66.0, first offered to Release channel users on March 19, 2019
We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- Firefox now prevents websites from automatically playing sound. You can add individual sites to an exceptions list or turn blocking off. To learn more about block autoplay, which will be rolled out gradually to all users, visit the Mozilla blog.
- Improved search experience:
- Find a specific webpage faster when you have a lot of tabs open: You can now search within all of your open tabs from the tab overflow menu
- Easier search via a redesigned new tab in Private Windows
- Smoother scrolling: Scroll anchoring keeps content from jumping as images and ads load at the top of the page
- Improved performance and better user experience for extensions:
- Extensions now store their settings in a Firefox database, rather than individual JSON files, making every site you visit faster
- A redesigned keyboard shortcuts section in about:addons makes it easier to view and adjust default shortcuts
- Redesigned certificate error pages help you better understand and resolve issues, including identification of certificate issuers for anti-virus software
- Added basic support for macOS Touch Bar
- Experimenting with an improved Pocket experience in New Tab with different layouts and more topical content
- Improved performance and reduced crash rates by doubling web content loading processes from 4 to 8
- Easier, passwordless security: Added support for Windows Hello on Windows 10, allowing you to use your face, fingerprint, or external security keys for website authentication
changed
- The Dark and Light Firefox themes now override the system setting for title bar accent color on Windows 10
- Linux users: Resolved an issue that caused Firefox to freeze when downloading files
- Various security fixes
developer
- System title bar is hidden by default to match Gnome guideline for Linux users
- DevTools Inspector is now fully usable when the Debugger is paused
- Lowered priority of setTimeout and setInterval during page load to improve overall page load performance
- Fixed: <button> element is no longer special cased in event dispatch, per latest specifications
66.0.1
Firefox Release
March 22, 2019
Version 66.0.1, first offered to Release channel users on March 22, 2019
fixed
developer
- Various security fixes
Developer Information
All Firefox downloads
- Reference link to 66.0 release notes
66.0.2
Firefox Release
2019-03-27
Version 66.0.2, first offered to Release channel users on March 27, 2019
fixed
- Fixed Web compatibility issues with Office 365, iCloud and IBM WebMail caused by recent changes to the handling of keyboard events (Bug 1538966)
- Crash fixes (bug 1521370, bug 1539118)
66.0.3
Firefox Release
April 10, 2019
Version 66.0.3, first offered to Release channel users on April 10, 2019
Fixed
Changed
- Address bar on tablets running Windows 10 now behaves correctly (Bug 1498973)
- Performance issues with some HTML5 games (Bug 1537609)
- Fixed a bug with keypress events in IBM cloud applications (Bug 1538970)
- Fix for keypress events in some Microsoft cloud applications (Bug 1539618)
- Updated Baidu search plugin
66.0.4
Firefox Release
May 5, 2019
Version 66.0.4, first offered to Release channel users on May 5, 2019
Fixed
Developer
- Repaired certificate chain to re-enable web extensions that had been disabled
Developer Information
- Reference link to 66.0.3 relea
66.0.5
Firefox Release
May 7, 2019
Version 66.0.5, first offered to Release channel users on May 7, 2019
Fixed
Developer
- Further improvements to re-enable web extensions which had been disabled for users with a master password set (Bug 1549249). More support information
Dev
67.0
Firefox Release
May 21, 2019
Version 67.0, first offered to Release channel users on May 21, 2019
We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
New
Fixed
- Firefox 67 demonstrates improved performance thanks to a number of changes such as:
- Lowering priority of setTimeout during page load
- Delayed component initialization until after start up
- Painting sooner during page load but less often
- Suspending unused tabs
- Learn more about our approach to performance in 67 in the Mozilla blog.
- Users can block known cryptominers and fingerprinters in the Custom settings of their Content Blocking preferences.
- Keyboard accessibility has improved in the latest version of Firefox. Toolbar and toolbar overflow menu are both fully keyboard accessible: keyboard users can now access add-ons, the downloads panel, the overflow, Page actions and Firefox menus, and much more.
- Private Browsing sees both usability and security improvements:
- Save passwords in private browsing mode
- Choose which extensions to exclude from private tabs
- A myriad of new features help make Firefox easier to use:
- We’ve added a toolbar menu for your Firefox Account to provide more transparency for when you are synced, sharing data across devices and with Firefox. Personalize the appearance of the menu with your own avatar
- Tabs can now be pinned from the Page Actions menu in the address bar
- Firefox will highlight useful features (like Pin Tabs) when users are most likely to benefit from them.
- Easier access to your list of saved logins from the main menu and login autocomplete. Learn about all the ways you can manage your passwords in Firefox.
- The Import Data from Another Browser feature is now also available from the File menu
- Users will be able to run different Firefox installs side by side by default so that you can run the beta and release versions simultaneously
- Firefox will now protect you against running older versions of the browser which can lead to data corruption and stability issues
- Firefox is upgrading to the newer, higher performance, AV1 decoder known as ‘dav1d’
- WebRender is gradually enabled by default on Windows 10 desktops with NVIDIA graphics cards
- Mozilla’s highest performing JavaScript compiler now supports ARM64 Windows devices.
- Enable FIDO U2F API, and permit registrations for Google Accounts
- Some users will see experiments with an improved Pocket experience in Firefox Home with different layouts and more topical content.
Changed
- Various security fixes
- Firefox no longer supports handling webcal: links with 30boxes.com
- Change to extensions in Private Windows: Any new extensions you add to the browser won’t work in Private Windows unless you allow this in the settings.
- Users will no longer be able to upload and share screenshots through the Firefox Screenshots server. Users who want to keep existing screenshots need to export them before the server shuts down in the coming months.
- Included Twemoji Mozilla font updated to support Emoji 11.0
- Font and date adjustments to accommodate the new Reiwa era in Japan
67.0.1
Firefox Release
June 4, 2019
Version 67.0.1, first offered to Release channel users on June 4, 2019
With this update, Firefox will now guide our users through a path to Join Firefox which will allow you to maximize the benefits from our family of respectful tech products.
New
- In this version, Firefox helps you get better acquainted with our family of products and services through a new experience that includes a set of web pages and in-browser notifications. All Firefox products and services have powerful privacy protection built in; joining Firefox provides users with additional features and capabilities. These experiences will highlight these benefits. The new experience will roll out for English (en-US, en-GB, en-CA), French (fr) and German (de) browser users today, expanding to other languages in the coming weeks.
- With the new experience, there will be an opportunity for users to opt in for test-driving upcoming products during registration.
- For new users, this release will come with Enhanced Tracking Protection (ETP), stronger privacy protections on by default as “Standard” in the Privacy & Security setting. Firefox Enhanced Tracking Protection will now automatically block third-party tracking cookies that appear on the Disconnect list. Firefox will continue to block third-party tracking loads in private windows, as it has done since version 42.
- For existing users, while ETP will be rolling out by default in the coming months, you can turn this feature on today under Preferences, select Privacy & Security to select the Custom menu, and under the Content Blocking section, mark the Cookies checkbox and choose “Third-party trackers” in the Cookies pull down menu.
- With this release, a number of our products and services are expanding their capabilities. Coupled with our browser, and with a Firefox account, they extend your online privacy and security and increase convenience, giving you peace of mind.
- Facebook Container version 2.0 expands functionality to prevent Facebook from tracking you on other websites that embed Facebook Likes, Shares and comments in their pages, greatly limiting Facebook’s ability to track your activities across the web.
- Firefox Lockwise (formerly Lockbox), with its new name, look and feel, is now fully cross-platform with the introduction of the Lockwise desktop extension in this release. With the Link Removed and Link Removed apps, and now with the desktop extension, Lockwise allows you to take your passwords across all devices and safely auto-fill login details as you need on any browser or app once logged in with a Firefox account.
- Firefox Monitor 2.0 expands its capabilities to allow users with a Firefox account to monitor multiple email addresses and receive email alerts when any of them are involved in a known breach. A dashboard also helps to show the total number of known breaches in which your email addresses have been involved.
- Firefox Send allows you to send files up to 1GB with end-to-end encryption and a link that automatically expires; with a Firefox account, the size limit becomes 2.5GB with additional controls for number of downloads or days, and the ability to password protect the file.
67.0.2
Firefox Release
June 11, 2019
Version 67.0.2, first offered to Release channel users on June 11, 2019
Fixed
- Fix JavaScript error ("TypeError: data is null in PrivacyFilter.jsm") in console which may significantly degrade sessionstore reliability and performance (bug 1553413)
- Proxy authentication dialog box repeatedly pops up asking to authenticate after upgrading to Firefox 67 (bug 1548804)
- Pearson MyCloud breaks if FIDO U2F is not Chrome's implementation (bug 1551282)
- Starting in safe mode on Linux or macOS causes Firefox to think on the subsequent launch that the profile is too recent to be used with this version of Firefox (bug 1556612)
- Linux distribution users can't easily install/use additional/different languages using the built-in preferences UI (bug 1554744)
- Developer tools users can't copy the href/src content from various HTML tags via the context menu in the Inspector markup view (bug 1552275)
- Custom home page is broken with clearing data on shutdown settings applied (bug 1554167)
- Performance-regression for eclipse RAP based applications (bug 1555962)
- macOS 10.15 crash fix (bug 1556076)
- Can't start two downloads in parallel via <a download> anymore (bug 1542912)
67.0.3
Firefox Release
June 18, 2019
Version 67.0.3, first offered to Release channel users on June 18, 2019
Fixed
67.0.4
Firefox Release
June 20, 2019
Version 67.0.4, first offered to Release channel users on June 20, 2019
Fixed