this post was submitted on 15 Jul 2026
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[–] sem@piefed.blahaj.zone 6 points 5 days ago (1 children)

Kind of a tangent, but while the png format uses lossless compression, you do not know that the .png you have in front of you is lossless from the filename; image softwares can and do support preprocessing an image with lossy algorithms to improve the file size.

This is sort of unlike flac for audio -- it is technically also possible, but hardly anyone would do it, since the only reason to use flac is for lossless compression.

I get the impression that .png is used alongside .jpg as a general image format, although i don't really know.

You also don't know if your .png file has an alpha channel or not -- might have been made without one.

[–] Sustolic@lemmy.world 2 points 5 days ago

Well.. fake flac uploads from artists are not that uncommon on streaming services..