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A new PNG spec

(www.programmax.net)
612 points bluedel | 1 comments | 24 Jun 25 13:01 UTC | HN request time: 0.205s | source
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ksec ◴[25 Jun 25 11:10 UTC] No.44375919[source]▶
It is just a spec on something widely implemented already.

Assuming Next gen PNG will still require new decoder. They could just call it PNG2.

JPEG-XL already provides everything most people asked for a lossless codec. If there are any problems it is its encoding and decoding speed and resources.

Current champion of Lossless image codec is HALIC. https://news.ycombinator.com/item?id=38990568

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bla3 ◴[25 Jun 25 16:12 UTC] No.44378924[source]▶
WebP lossless is close to state of the art and widely available. It's also not widely used. The takeaway seems to be that absolute best performance for lossless compression isn't that important, or at least it won't get you widely adopted.
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1. account42 ◴[26 Jun 25 08:55 UTC] No.44385510[source]▶
Last I checked cwebp does not preserve PNG color space information properly so the result isn't actually visually lossless.