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Browser maker love-in snubs Google-shunned JPEG XL
(www.theregister.com)
This is a most excellent place for technology news and articles.
Converting from jpeg to jxl comes some serious space savings and can be done losslessly.
We change video formats without any major benefits of one over the other. I think it's totally reasonable to do the same with image formats. Especially the data can be losslessly compressed even more.
I wouldn't call speed a major factor for image processing anyway. It's hugely important for movies, where AVIF is coming from, but much less so when there is no hard 30x2160x3840 pixels/s benchmark you need to reach.