Mozilla Firefox 93.0 stable

Une nouvelle mouture du navigateur Firefox est arrivé. Pour cette version, Mozilla apporte le support du format d'image AVIF basé sur le codec vidéo AV1 qui a l'avantage d'être open-source.

Côté performances, sur les systèmes manquant de mémoire vives disponible, Firefox va automatiquement de délester de certains onglets non consultés depuis un moment.

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

Nouveautés de Firefox 93.0 (05/10/2021)


  • Firefox now supports the new AVIF image format, which is based on the modern and royalty free AV1 video codec. It offers significant bandwidth savings for sites compared to existing image formats. It also supports transparency and other advanced features.
  • Firefox PDF viewer now supports filling more forms (XFA-based forms, used by multiple governments and banks). Learn more.
  • When available system memory is critically low, Firefox on Windows will automatically unload tabs based on their last access time, memory usage, and other attributes. This should help reduce Firefox out-of-memory crashes. Switching to an unloaded tab automatically reloads it.
  • To prevent session loss for macOS users who are running Firefox from a mounted .dmg file, they’ll now be prompted to finish installation. This permission prompt only appears the first time these users run Firefox on their computer.
  • Firefox now blocks downloads that rely on insecure connections, protecting against potentially malicious or unsafe downloads. Learn more and see where to find downloads in Firefox.


  • The VoiceOver screen reader now correctly reports checkable items in accessible tree controls as checked or unchecked.
  • The Orca screen reader now works correctly with Firefox, no longer requiring users to switch to another application after starting Firefox.
  • Various security fixes


  • TLS ciphersuites that use 3DES have been disabled. Such ciphersuites can only be enabled when deprecated versions of TLS are also enabled. Learn more.
  • The download panel now follows the Firefox visual styles.


Consulter les notes de version de Mozilla Firefox 93.0

Mozilla Firefox
Version : 93.0
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