Is there already a feature request for this?
Example test page: https://gregbenzphotography.com/hdr/#tests
Chrome is able to display the Ultra HDR pictures while Firefox display them very dark.
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here you can find a great description how it works in detail, including a demonstration of the components within an ultra hdr image:https://www.androidpolice.com/android-14-ultra-hdr-hands-on/
here you can find original example image:https://github.com/MishaalRahmanGH/Ultra_HDR_Samples
todays it's coming even to old Pixel phones:https://9to5google.com/2023/12/04/pixel-camera-9-2-rolling-out/
and with the ongoing adoption of android 14 (ultra hdr is a core function) it will be widely available for pictures taken with android phones...
Please add support for the Ultra HDR image format (not just the backwards compatible JPEG). When viewed on a compatible monitor, the results are truly impressive.