Enlarge / A special 100th-version splash page appears on the first launch of a new Firefox installation. (credit: Samuel Axon)

Firefox released its 100th update, and some fanfare accompanied the release on Mozilla's blog about the web browser. Firefox 100 is available this week for both desktop and mobile versions.

To celebrate, Mozilla says it will be regularly sharing fan art inspired by Firefox throughout May. But while that 100 number carries some symbolic weight, the update itself isn't particularly monumental.

On the desktop, subtitles and captions are now supported in Firefox's picture-in-picture mode for videos. Three key websites officially support subtitles and captions in PIP: YouTube, Netflix, and Amazon Prime Video. Plus, the feature works on websites that support the WebVTT standard, like Twitter.