.jxl

JPEG XL

Not yet supported

Format facts

MIME type: image/jxl
Apple UTI: custom
Stock Quick Look: no stock preview
Planned approach (census): special-renderer
Icon hint: generic-icon
Prevalence: common

Renderer note (from the census)

parse JXL codestream header for dimensions

Gotchas: not natively supported in Safari/macOS yet