Mozilla Firefox 115.0.3 / 115.0.3 ESR

Une nouvelle mouture du navigateur Firefox est arrivée. Pour cette version 115, un changement est annoncé pour les utilisateurs du navigateur sous Windows 7/8.1 et macOS 10.12 à 10.14.

En effet, cette version sera la dernière à supporter ces systèmes. Néanmoins, Mozilla a décidé de leur offrir un long support et pour ce faire, ces utilisateurs seront basculés sur la version ESR du navigateur. Ainsi, la toute dernière version de Firefox compatible avec ces systèmes sera la 115.15.0 à venir d'ici l'été 2024 (en sortie concomittante avec Firefox 130.0).

Pour en revenir aux nouveautés, Mozilla permet de migrer ses informations de paiements depuis un autre navigateur basé sur Chrome (l'assistant a d'ailleurs été modernisé). Les possesseurs d'un GPU Intel sous Linux pourront bénéficier de l'accélération matérielle.
Côté modifications, les utilisateurs ayant un ancien thème "Colorway" se verront migré vers un thème similaire disponible sur le site officiel des thèmes du navigateur

Autrement, quelques corrections et autres améliorations pour les entreprises et les développeurs.

Voici la liste complète des modifications par rapport à la version précédente :

Nouveautés de Firefox 115.0.3 (27/07/2023)


  • Improved migration experience for users switching to the ESR release. (bug 1845338)

Consulter les notes de version de Mozilla Firefox 115.0.3

Nouveautés de Firefox 115.0.2 (11/07/2023)


  • Fixed a startup crash experienced by some Windows 10 and 11 users by blocking instances of a malicious injected DLL (bug 1841751)
  • Fixed a bug with displaying a caret in the text editor on some websites (bug 1840804)
  • Fixed a bug with broken audio rendering on some websites (bug 1841982)
  • Fixed a bug with patternTransform translate using the wrong units (bug 1840746)
  • security fix.
  • Fixed a crash affecting Windows 7 users related to the DLL blocklist.

Consulter les notes de version de Mozilla Firefox 115.0.2

Nouveautés de Firefox 115.0.1 (07/07/2023)


  • Fixed a startup crash for Windows users with Kingsoft Antivirus software installed (bug 1837242)

Consulter les notes de version de Mozilla Firefox 115.0.1

Nouveautés de Firefox 115.0 (04/07/2023)


  • Migrating from another browser? Now you can bring over payment methods you've saved in Chrome-based browsers to Firefox.
  • Hardware video decoding is now enabled for Intel GPUs on Linux.
  • The Tab Manager dropdown now features close buttons, so you can close tabs more quickly.
  • We've refreshed and streamlined the user interface for importing data in from other browsers.
  • Users without platform support for H264 video decoding can now fallback to Cisco's OpenH264 plugin for playback.


  • Windows Magnifier now follows the text cursor correctly when the Firefox title bar is visible.
  • Windows users on low-end/USB wifi drivers and with OS geolocation disabled can now approve geolocation on a case by case basis without causing system-wide network instability.
  • Various security fixes.


  • Undo and redo are now available in Password fields.
  • On Linux, middle clicks on the new tab button will now open the xclipboard contents in the new tab. If the xclipboard content is a URL then that URL is opened, any other text is opened with your default search provider.
  • For users with a Firefox Colorways built-in theme, the theme will be automatically migrated to the same theme hosted on for Firefox profiles that have disabled add-ons auto-updates. This will allow users to keep their Colorways theme when they are later removed from Firefox installer files.
  • Certain Firefox users may come across a message in the extensions panel indicating that their add-ons are not allowed on the site currently open. We have introduced a new back-end feature to only allow some extensions monitored by Mozilla to run on specific websites for various reasons, including security concerns.



  • Developer Information
  • In web development, we rely on third-party libraries which you may not be interested in while debugging. These can be ignored. Ignoring them means that breakpoints will not get hit and they are skipped during stepping.You can now choose to Hide ignore-listed sources in the Developer Tools source tree (bug).
    developer tools screenshot of the Hide ignore-listed sources option
  • Ignored sources are also skipped by JavaScript tracing feature (bug).
  • We have introduced a new option, devtools.f12_enabled, that can be utilized to prevent the accidental use of the F12 key, which opens the DevTools toolbox (bug).

Web Platform

  • The builtin editor now behaves similarly to other browsers with contenteditable and designMode when splitting a node, e.g. typing Enter to split a paragraph, and also when joining two nodes, e.g. typing Backspace at the start of a paragraph to join the paragraph and the previous one.When a node is split, the builtin editor creates a new node after the original one instead of before, i.e. creates the right node instead of the left node.Similarly, when two nodes are joined, the builtin editor deletes the latter node and moves its children to the end of the preceding node instead of deleting the former node and moving its child to the start of the following node.
  • WebRTC application developers can now specify a target in milliseconds of media for the jitter buffer to hold. Altering the target value allows applications to control the tradeoff between playout delay and the risk of running out of audio or video fraalso in private browsingmes due to network jitter.
  • Change array by copy provides additional methods on Array.prototype and TypedArray.prototype to enable changes on the array by returning a new copy of it with the change.
  • The animation-composition property is now supported, allowing a declarative way to define the composite operation used when multiple animations affect the same property simultaneously.
  • Added the URL.canParse() function to allow easy and fast checking if URLs are valid and parseable.
  • IndexedDB is now also supported in private browsing without memory limits thanks to encrypted storage on disk.
  • Supports conditions are now supported in CSS import rules @import supports(...)

Consulter les notes de version de Mozilla Firefox 115.0

Mozilla Firefox
Version : 115.0.3
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