Chris Blume

Rather than include the original spec, maybe reference the version of the spec that libpng reflects? We're currently working on the 3rd Edition of the PNG spec: https://github.com/w3c/PNG-spec We'll want...

I can understand the desire to move from glennrp/libpng to libpng/libpng. That makes it feel like libpng is more of a community project, not one individual owner's project. Moving to...

Sorry you learned about Glenn's passing this way, @madler

libpng added eXIf support in 1.6.3, released on July 18, 2013. Firefox explicitly ignores the eXIf chunk. [Glenn Randers-Pehrson even patched Firefox in 2017 to add the eXIf chunk to...

The issue makes sense to me. If I were to open an image in an editor and change parts of it, safe-to-copy chunks would be preserved when I save the...

I'm not yet familiar with libpng's transformations. Do you mean decoding a full frame 2 requires frame 1? If so, transparency doesn't need to complicate it, right? It could be...

That is correct. Chromium currently treats each frame as full. So if frame 2 only updates a 10x10 region, it'll first copy frame 1 into frame 2, then update that...

I agree that there is room to improve and time to do it now. I regret dropping the ball on making a suite of public domain test images. Those would...

I think that's okay. There probably should be multiple solutions. Even if the initial release of the hypothetical PNG2 is just a big catch-up and not yet fully competitive, I...

EDIT: I thought the reply was to a different thread. I lost context in that. As a result, my comment was very off-topic. Given the correct context, my comment seems...