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Strollin' around
Status: Trending idea

I think it's a great opportunity for Firefox to stand out by supporting JPEG XL before any other browser.

Imagine images served by Cloudflare and Cloudinary load faster and look better only with Firefox. Firefox was a pioneer of web technologies and it should win the title back, if Firefox just keep following Chrome without any differentiation, why would people choose Firefox?

If the decoder memory safety is a concern, maybe Mozilla can start a crowd funding campaign to sponsor a Rust decoder, even the campaign itself will attract reports and attentions for Firefox.

Mozilla argued AVIF was already supported as a same generation but clearly JPEG XL has many advantages:

  • Much better encoding performance (AVIF is not suitable for realtime CDN optimization at all)
  • lossless and better high fidelity (video codec based image format)
  • HDR (there will be a billion of mobile devices with real good & bright screen in just a few years)
  • Little generation loss (important for web)

Supports from Facebook, Adobe (they're adding export support), Intel and VESA, Krita, The Guardian, libvips, Cloudinary, Shopify


Strollin' around

@DonaldReaganI have this flag set and still need to have an extension to get JXL to work on 117.0.1

Making moves

I have Firefox 118.0 and an option image.jxl.enabled set to true, but JPEG XL images still won't show up.

Strollin' around

As far as I understand, the flag only works in the "nightly" development releases, not (yet) in the regular releases of Firefox. Support for JPEG-XL in the regular versions of Firefox would be very nice and I think there are patches from e.g. Palemoon which could be integrated.

Strollin' around

Currently a clear #1 in terms of positive reactions for Interop 2024 proposals, for whatever that's worth. Seems like everyone (including Google & Mozilla) has been pretty good about meeting the goals of previous Interops. The linked Github issue has some great feedback detailing why JXL is the future (but more support is always welcome, to anyone reading this!).

New member

I really hope to see JXL become a standard and would love to see Mozilla contribute towards that!

New member

I would love to see Firefox supporting JPEG XL as the first Linux browser!

Strollin' around

That's too late I believe - at least both the Palemoon and Thorium browsers already support JPEG-XL. Firefox could be the first major browser to support JPEG-XL om Linux, which would be really nice.


New member

JPEG XL is also at the top of Interop 2024 reactions (505 votes vs 136 for 2nd, 91 for 3rd):

Sadly Firefox stays behind:

New member

JPEG XL is definitely at the top of Interop 2024 (with 536 reaction while the next are: 136, 92, 78):
Does it mean Firefox will finally adapt it in 2024?


New member

Samsung has just started supporting JPEG XL:

When will we be able to see such images in Firefox?