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2026-07-15 05:19:48 UTC

lcamtuf :verified: :verified: :verified: on Nostr: Idle thought: you can have progressive JPEGs in which coefficients for ...

Idle thought: you can have progressive JPEGs in which coefficients for lower-frequency components are sent first and the detail is refined as more data arrives.

I'm sure you can abuse this to construct a *regressive* JPEG that looks good with the initial low-frequency data and then degrades into something terrible.