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@nucliweb.net Sep 20, 2026, 2:04 PM

The case against JPEG XL

Investigating JPEG XL's place as a Web image codec, by @giannirosato.com, via @webperfreport.bsky.social

giannirosato.com/blog/post/ca...

#JPEGXL #JXL #ImagePerf #WebPerf

A dark-themed line chart titled “SSIMULACRA2,” showing BD-Rate (%) versus encoding speed in milliseconds for several image codecs. Colored lines compare codecs including AOM, JPEG XL, aperture-alpha, Iris-WebP, libjxl, SVT-AV1, and libwebp, with labeled data points. Most curves show higher BD-Rate at slower speeds, while some reach negative BD-Rate at faster speeds.

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