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A new PNG spec

(www.programmax.net)
616 points bluedel | 1 comments | 24 Jun 25 13:01 UTC | HN request time: 0.224s | source
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joshmarinacci ◴[25 Jun 25 15:55 UTC] No.44378719[source]▶
A fun trick I do with my web based drawing tools is to save a JSON representation of your document as a comment field inside of a PNG. This way the doc you save is immediately usable as an image but can also be loaded back into the editor. Also means your downloads folder isn’t littered with unintelligible JSON files.
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1. dragonwriter ◴[25 Jun 25 18:54 UTC] No.44380701[source]▶
This is also what many AI image gen frontends do, saving the generation specs as comments so you can open the image and get prompt and settings (or, for, e.g., ComfyUI, full workflows) loaded to tweak.

Really, I think its pretty common for tools that work with images generally.