
>Relative to lossless JXL filesize, how close in compression does a given lossless image codec get?
That's what I'm trying to answer here. A dozen common type 1920x1080 PNG images were used.
JXL KB = 100% and BMP KB = 0%. Lossless JXL/Webp/AVIF/oxiPNG/QOI tested. Anything above 100% means JXL was defeated.(BMP KB-JXL KB)=A | (BMP KB-Xcodec KB)/A= lossless compression relative to JXL losslesscjxl in.png out.jxl -d 0.0 -e 10 --brotli_effort=11 cwebp -lossless -m 6 -q 100 in.png -o out.webp avifenc -l -s 0 --cicp 1/13/16 in.png out.avif oxipng -o 6 in.png qoi "...\in.png" "...\out.qoi"
ALL files: https://files.catbox.moe/x926hp.zip

Sorry @void I forgot today was Father's day and after I got picrel results there were like 10 ways to interpret the results. I settled on a relativity to JXL interpretation and I'm happy with it since it shows diminishing returns better.
Tearing off a whole MB chunk off an image with 0 loss in quality is pretty nice but shaving off a meager 10-20 KB, not so much tbh.
btw, ## Happy Father's Day

4chan thread is up, https://boards.4chan.org/g/thread/109108299
Put on your best war face @void maybe this is the day we get another friendo that cares about image compression here. If not then it was worth a shot I think.
>>785 (OP)
Very nice charts, man. You really know your stuff

oxiPNG_: 62 KB
picrel Lossless Webp: 35 KB
~44% smaller
>>790
Thanks man. I've been going at it since yesterday but I'm glad it turned out good. Practically speaking maybe this is what people will care about the most. Hell maybe lossless images will be the future if internet speeds keep improving all the time.
>>798
Unfortunately we can't all be protected by the first amendment. Anyway I don't allow NSFW in this website because people just use it to shit up boards like /r9k/ and /pol/ with IR and trans baiting crap
NSFW should be restricted to boards that are specific to that so it stays in topic

>>800
>NSFW should be restricted to boards that are specific to that so it stays in topic
I miss 4channel tbh, like it was one of the rare times Hiro tried to make the site better. Now you get goonbait ads all the time. I would have rather they kept the site ad free and just done charity begging events or something if nobody wanted to buy the stupid passes tbh.
>>801
AVIF is weird man, sometimes it will give you okay compression and sometimes it loses to fucking PNG. My OP has the parameters I found that apply max AVIF compression.
@void I'm curious man, if this is one of those cucker/soyjack terrorist spammers that use residential proxies, is it possible to defend against that without introducing the IQ test captchas?
btw I'm not even phased by this spam anymore, weird to even admit that. It's disgusting but sperging autists will sperg hard and 4chan's IQ captchas sometimes aren't enough it seems.
>>808
>if this is one of those cucker/soyjack terrorist spammers that use residential proxies, is it possible to defend against that without introducing the IQ test captchas?
Yeah, there are some methods, but it all boils down to cost-effectiveness
>btw I'm not even phased by this spam anymore, weird to even admit that. It's disgusting but sperging autists will sperg hard and 4chan's IQ captchas sometimes aren't enough it seems.
It's background noise mostly