[ognyankulev]

My choice would be the recently standardized JPEG XL designed to replace all of: JPEG, JPEG 2000, PNG, GIF. Among other things, it is supposed to be the first choice for long-term storage. I guess mass adoption will begin after including it in the PDF standard. It is already experimentally in Chrome and Firefox.

[codedokode]

JPEG is optimized for compressing photos, not text or high contrast images.

[ognyankulev]

This only applies to legacy JPEG (1992), not for JPEG XL (2022).

[navjack27]

2nded