Why does it need to be under the W3C umbrella? We already have JPEG-XL and AVIF that meet those criteria and are supported by most/all browsers. What would be the benefit/use case for ANOTHER image format?
Leonard
From: Seeger, Chris (NBCUniversal) <Chris.Seeger@nbcuni.com>
Date: Thursday, November 13, 2025 at 8:04 AM
To: Chris Blume (ProgramMax) <programmax@gmail.com>, Chris Lilley <chris@w3.org>
Cc: Portable Network Graphics (PNG) Working Group <public-png@w3.org>
Subject: Re: [EXTERNAL] Re: PNG overview slides
EXTERNAL: Use caution when clicking on links or opening attachments.
Seems like it would be valuable to get a single image standard to support lossy and lossless under the W3C umbrella. I’d like to see this move forward.
Chris Seeger
[cid:image003.png@01DBAD18.69AF0620]
[cid:image002.png@01DBA9F3.92D8A420]
From: Chris Blume (ProgramMax) <programmax@gmail.com>
Date: Thursday, November 13, 2025 at 1:05 AM
To: Chris Lilley <chris@w3.org>
Cc: Portable Network Graphics (PNG) Working Group <public-png@w3.org>
Subject: [EXTERNAL] Re: PNG overview slides
I have also prepared some slides for the 5th Edition roadmap. (I will likely update them further tonight. I want it to feel less "that's asking a lot" and more inspirational.)
I didn't realize there was perhaps a slide design I should follow. :) oh well
https://www.programmax.net/talks/png-5th-edition-roadmap/<https://urldefense.com/v3/__https://www.programmax.net/talks/png-5th-edition-roadmap/__;!!PIZeeW5wscynRQ!teSn4yviUBeJ8O9oZSwfJ9aKO0E-s15YjPBgNu1aE25KBHvIssFohlbOT0_RndqnlcdI20H5N-JmHbdKxCmf$>
On Thu, Nov 13, 2025, 2:56 PM Chris Lilley <chris@w3.org<mailto:chris@w3.org>> wrote:
Slides for an overview of PNG 3rd Edition (plus what we have so far on 4th):
https://www.w3.org/2025/Talks/TPAC/PNG-summary/<https://urldefense.com/v3/__https://www.w3.org/2025/Talks/TPAC/PNG-summary/__;!!PIZeeW5wscynRQ!teSn4yviUBeJ8O9oZSwfJ9aKO0E-s15YjPBgNu1aE25KBHvIssFohlbOT0_RndqnlcdI20H5N-JmHUriXr2b$>
--
Chris Lilley
@svgeesus@mastodon.scot
W3C Distinguished Expert, Color, Graphics & Fonts
W3C Technical Programming Team, Core Web Design
