The case against JPEG XL
- ID
- 24164
- Status
- summarized
- Published
- 14 Sep 2026, 9:02 AM
- Fetched
- 16 Sep 2026, 5:58 AM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://giannirosato.com/blog/post/case-against-jxl/
- Source URL
- https://hnrss.org/best
Summary
- Score
- 5.0
- Created
- 16 Sep 2026, 6:01 AM
- Tags
- Audience
- developers
What happened
Gianni Rosato argues against JPEG XL for web use, noting its lossless advantage over WebP is only ~11.9% smaller on unrealistic test datasets, and its lossy compression isn't competitive. A Rust-based JPEG XL decoder has recently entered Firefox and Chrome, potentially reversing Chrome's 2023 rejection of the format, but Rosato questions whether that's sufficient justification.
Why it matters
If you're choosing an image format for web delivery today, this argues JPEG XL's real-world lossless savings are too marginal to justify adoption and its lossy mode isn't competitive—so AVIF or WebP remain the practical choices unless browser support dynamics shift further.
Discussion angle
Is the Rust decoder's memory-safety argument enough to reconsider JPEG XL in browsers, or does the lossy compression gap make it irrelevant for most web image pipelines?