have you seen what AVIF does to screenshots of 96dpi Windows ClearType text? Jesus Christ
can we please stop dressing up 4:2:0 chroma subsampled video codecs as image codecs and pretending they do an even vaguely acceptable job
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in reply to @ticky's post:
i tried to look into this but i can't find a single webpage talking about avif that actually shows an avif image
can we please stop dressing up 4:2:0 chroma subsampled video codecs as image codecs
tell that to JPEG!!!!! i think most things still default to 4:2:0 for jpeg. at least you can set it to 4:4:4 tho if you know what you're doing
I believe libjpeg will do 4:4:4 if you're >90% quality, which is reasonable
oh i didnt know that! i thought it was just the DCT quantization tables
Wait, 72 dpi? Isn't Windows 100% scaling at 96 dpi? (Not that this is the point, of course. Video codecs disguised as images suck.)
in reply to @ticky's post:
This is actually something I reported as a bug on Cohost, I have an example of a photo I've posted where I already manually optimized it to a 50 kB webp and the preview generator crunched it even further to 10 kB <_<
What resolution was it? Cohost creates low-resolution copies for images that are bigger than the maximum display area, but not for smaller images. It shows the original when you click.
The original was 1280x1280 and the preview was 600x600... At any rate, I already reported it and all we can do is see if staff adjusts the preview generation rules. Most users may not be optimizing their photos before upload so I'm the only one that would have noticed this...
different experiences in different cases.. for my hi-dpi screenshots of eda software in my keyboard post it was more like very good avif compressions ended up around 100kb while the best i could do with png, quantizing the palette and crunching the best zopfli parameters with oxipng, was closer to 250kb. but yea i don't do thumbnails at all, crunch the file hard and only use it directly is cooler
