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Why are 90% of the images WebP format?
(lemmy.world)
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this post was submitted on 11 Oct 2023
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The compression to quality ratio of webp is amazing, especially webm. Some instances have this conversion happen upon upload would be my guess to save a crazy amount of space.
WebP is a tiny bit better on small images and slightly worse overal than JPEG, when using a good encoder library (mozjpeg). It is better than standard libjpeg but that’s not really a fault of the format as much as of the specific encoder.
JPEG compression is standardized. The only part of the algorithm that is configurable is the quantization matrix which is essentially a control of what I information to throw away and how much. So unless you are throwing away a huge amount of information (really shitty image), there is no way a different library will somehow save you a bunch of space.
That is exactly what's happening :) better quantization matrix results in 25% smaller files with the same perception-based q which makes webp kinda useless often https://siipo.la/blog/is-webp-really-better-than-jpeg
Try jpeg-xl though. it's amazing.