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The case against JPEG XL

The gist

Gianni Rosato published 'The case against JPEG XL' on Sep 13, 2026.
The debate matters because browser support for JPEG XL may be shifting in 2026.

How it unfolded

  1. 2021JPEG-XL (JXL) became available, offering a true lossless mode with often better compression than PNG.
  2. 2023JPEG XL was rejected from Chrome; the same year saw the WebP vulnerability CVE-2023-4863.
  3. 2025The PDF Association selected JPEG-XL as the preferred image format for HDR images in PDFs.

Sources

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