this post was submitted on 01 Feb 2024
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Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ
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And also just websites compressing images without the user getting any input. A meme that goes from Facebook to Twitter to Reddit to Twitter to Tumblr to Reddit to here will likely be compressed every time it gets reuploaded. Most social media sites use some form of image compression.
And it obviously doesn't help that artefacts from compression are multiplicative.
This is why you use PNG or GIF formats. Lossless compression on the PNG side and a LUT on the GIF side. Nothing to get compressed since it is literally just a grid of numbers and a table with the hex codes.
I really wish the social media companies and phone manufacturers would switch to PNG. So much better than JPG.
Lemmy compresses uploads to jpg without asking too
I know, is sad. Would love to see them converting the JPG to PNG. I do see a lot of images coming off here as GIF though, which Facebook doesn't let me send to people because fuck Facebook.
The storage demands between small compressed JPEG’s and decent quality PNG’s is massive. That’s a lot to ask of people who are self hosting this without any of us paying for it. Especially since 99% of the images loaded up here are one off jokes that are compressed versions from somewhere else already. Pretty clear example of “the juice isn’t worth the squeeze” IMO
If only google hadn’t decided to shit all over JXL. We could have lossless images with an excellent compression algorithm (at least better than the .zip style deflate png uses) at this very moment.
Too true