Colour space, as someone else highlighted, is also a possible issue too. RGB, sRGB, AdobeRGB, monitor/LCD colour profiles, Apple colour profiles etc etc. Who knows what’s being included or stripped out upon upload. 🤷♂️
I can no longer trust the @primal uploader on mobile since it doesn’t have previews.
By that I mean accurate previews, i.e., the thumbnail didn’t look like the final upload or couldn’t be enlarged to check.
So looks like a primal thing? Is it as bad with other clients?
No, I think it’s an Apple issue, I just haven’t had time to figure out what’s causing it.
@nostr.build @The Fishcake🐶🐾 Have you run into this issue with images uploaded from iOS 18? It only seems to happen with photos that have had level adjustments made using the photo editor.
Can you please elaborate what issue you are experiencing exactly? Is it color shifting, resolution decrease and blockiness, something completely different? We do convert HEIC to JPEG upon upload and it may change the colorspace and bit depth when it’s doing it. HEIC generally has higher bit depth that will make photo look more realistic but JPEG can retain most of that in sRGB space but not strong highlights or deep shadows. If you have sample pictures (can upload to your account and share with me) that would help. So far I haven’t ran into issues with my iOS 18.1beta6
It appears to be a color space issue. I’m having trouble reproducing it at the moment but I’ll update this post when it happens again.
Uploading from the account page specifically seems to remove color profile data for some reason. https://os.hel1-c1.semisol.net/static-n/color-profile-test.png
I’m on iOS 17 though. It works fine with HEIC also from Damus. But it most likely is a color space issue.
Fixed for PNGs now, had issues with pngquant being out of date and with no profile support (thanks Semi for spotting it)
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