If you convert the full-resolution JPEG/HEIC to PNG you won't lose any informati... | Hacker News

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thehappypm on June 21, 2021 | parent | context | favorite | on: JPEG XL

If you convert the full-resolution JPEG/HEIC to PNG you won't lose any information, right?

jonsneyers on June 21, 2021 | [–]

Technically, you do lose _some_ information. PNG cannot represent DCT coefficients nor YCbCr data, and the conversion of those things to (8-bit) RGB is a (slightly) lossy operation.

sp332 on June 21, 2021 | [–]

Sure, but what's the advantage to blowing up the file size to losslessly preserve all the lossy artifacts from JPEG or HEIC?

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