JXL & JP2 Sample Files
Free sample .jxl and .jp2 files for testing — generated from one scene so the formats compare honestly.
Real sample files, generated from the same test scene so you can compare formats honestly. Download them to test your own software — or run them through the viewers and converters in this family.
The test scene is synthetic (flat colours and sharp edges), which flatters lossless formats. Real photographs behave differently — the Format Comparison Lab shows you the numbers for your own photo.
Sample Files for Testing JXL and JP2
Need a .jxl or .jp2 file to test a viewer, a converter, or your own software? These samples were generated from a single test scene with the same encoders this tool family uses — download them free, no sign-up. The original PNG is included so you can verify every decode against the source.
One Scene, Four Files
Same 480×320 test scene as PNG, JPEG XL (quality 92), JPEG XL (lossless) and JPEG 2000 (lossless) — an honest little format comparison in itself.
Tiny and Instant
Each file is a few kilobytes — no archives, no waiting. Use them to smoke-test any tool in this family, including the viewers above.
Testing Something of Your Own?
Run these through the JXL Viewer, JP2 Viewer, the metadata viewers, or the Batch Converter — then try the Format Comparison Lab with a real photograph of yours to see how photographic content behaves.
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