Firefox Nightly is listed as supported on the jpegxl.info web site. My understanding is that it does not fully support the specification yet which is why it is

Firefox Nightly is listed as supported on the jpegxl.info web site. My understanding is that it does not fully support the specification yet which is why it is not released to production. https://jpegxl.info/resources/supported-software.html https://jpegxl.info/resources/supported-software.html