Downscale pasted PNG images based on metadata (#29123) #29304
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Some images like MacOS screenshots contain [pHYs](http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.8) data which we can use to downscale uploaded images so they render in the same dppx ratio in which they were taken. Before: <img width="584" alt="image" src="https://github.com/go-gitea/gitea/assets/115237/50979e3a-5d5a-40dc-a0a4-36eb6e28f14a"> After: <img width="329" alt="image" src="https://github.com/go-gitea/gitea/assets/115237/0690902a-f2fe-4c6b-97b3-6fdd67c21bad">
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lgtm/need 2
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Ah, can not backport easily because of BigInt requirement. |
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Backport #29123 to 1.21.
Some images like MacOS screenshots contain
pHYs data which we can use to downscale uploaded images so they render in the same dppx ratio in which they were taken.
Before:
After: