Let’s see what browsers/apps actually support animated JPEG-XL files! And in case it isn’t working for you, here is a still shot from this animation, in a widely-supported format:

BVo9MLVuZHYMEWA.webp

Also, I could not find a reputable source to explain exactly what the X in JPEG-XL actually stands for, so I just went with “extensible”, a la XML.

  • Teal@lemmy.zip
    3·
    17 days ago

    About the XL,

    The name refers to the design committee (JPEG), the X designates the series of its image coding standards published since 2000 (XT,XR,XS), and L stands for “long-term”, highlighting the intent to create a future-proof, long-lived format to succeed JPEG/JFIF.

    https://en.wikipedia.org/wiki/JPEG_XL