.hej2

JPEG XL image in ISO Base Media File Format container, metadata-inspectable

Dedicated renderer

Format facts

MIME type: image/hej2k
Apple UTI: custom
Stock Quick Look: no stock preview
Planned approach (census): metadata-only
Icon hint: thumbnail-only
Prevalence: rare

Renderer note (from the census)

parse ISO base media for JPEG 2000 track

Gotchas: HEVC container for JP2