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JXL images do not display 32-bit (HDR) content

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  • Last reply by Brian S

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Using the Nightly build with support for the JXL (JPEG XL) image format, I am able to open JXL images. However, the images are severely degraded if the source image is a 32-bit (HDR) image. The highlight values above SDR white are clipped. Effectively, the image is ruined.

So while I can view HDR videos just fine in Firefox using a properly configured HDR monitor (Apple Pro Display XDR), HDR photos do not work.

Does the roadmap for JXL support include plans to support HDR?

Using the Nightly build with support for the JXL (JPEG XL) image format, I am able to open JXL images. However, the images are severely degraded if the source image is a 32-bit (HDR) image. The highlight values above SDR white are clipped. Effectively, the image is ruined. So while I can view HDR videos just fine in Firefox using a properly configured HDR monitor (Apple Pro Display XDR), HDR photos do not work. Does the roadmap for JXL support include plans to support HDR?

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I think you already know more about this than I do, but maybe this will help:

If you open the "meta" bug (https://bugzilla.mozilla.org/show_bug.cgi?id=1539075) and look at the "Depends on" in the References section, you can get a sense of what is in progress. If it looks like HDR is not covered, you could file a new bug under the same "Product" and "Component" so the relevant person sees it.

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I see this bug under the dependencies:


Depends on: enhancement (5)
1709814 - NEW - Support color profiles for JPEG XL
1709815 - NEW - Support progressive decoding for JPEG XL
1709816 - NEW - Support proper transparency for JPEG XL
1709818 - NEW - Supported animated JXL files
1709857 - NEW - Support HDR for JPEG XL

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Thank you cor-el, sounds like Firefox simply does not support HDR images in JXL. That's a bummer!

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