JXR is legacy and read-only here
JXR (JPEG XR) is a Microsoft high-dynamic-range format with little support outside Windows. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new JXR files.
Looking to convert AVIF to JXR? Here's the honest answer — and what works instead.
Turn your file into a share-worthy AI Effect — one tap, no prompts.
AVIF is a next-generation format based on the AV1 codec, delivering far smaller files than JPEG or WEBP at the same quality, with transparency and HDR.
AVIF opens in modern browsers (Chrome, Firefox, Safari) and recent editors.
JXR (JPEG XR) is a high-dynamic-range format with better compression than JPEG, used in some Windows and HDR workflows.
JXR opens in Windows Photo Viewer; convert to JPG/PNG for universal use.
Not here — JXR is a legacy format with no modern encoder. We can often read JXR as a source, but for output use a current format like PNG, JPG or TIFF.
AVIF converts to PNG, JPG or TIFF — free, no sign-up, no watermark.