PNG 3rd edition 2022-10-28

[svgeesus]

The Privacy IG prefers groups to complete a self-review around the time of FPWD. See https://w3ctag.github.io/security-questionnaire/.

If you still want us to review your spec, please provide the information below.

In the issue title above add the document name followed by the date of this request.

• name of spec to be reviewed:
  • Portable Network Graphics (PNG) Specification (Third Edition)
• URL of spec: [This must be a dated version in the TR namespace, not an editor's draft.]
  • https://www.w3.org/TR/2022/WD-png-3-20221025/
• Does your document have an in-line Privacy Considerations section, ideally one separate from Security Considerations? If not, correct that before proceeding further.
  • Yes
• Do you need a reply by a particular date?
  • No
• Please point to the results of your own self-review (see https://w3ctag.github.io/security-questionnaire/ , https://w3c.github.io/fingerprinting-guidance/, https://tools.ietf.org/html/rfc6973)
  • https://github.com/w3c/PNG-spec/issues/228#issuecomment-1279390248
• Where and how to file issues arising?
  • PNG-spec GitHub repo, preferably one issue per comment
• Pointer to any explainer for the spec?
  • No, this is a maintenance update of an old and widely deployed specification

Other comments:

We are heavily constrained by the excellent backwards compatibility with PNG images since 1994.

We are primarily interested in comments on the new (or newly-standardized) features

[AramZS]

I'm picking up this review to write an assessment.

[svgeesus]

Thanks @AramZS any update?

[AramZS]

Review was discussed on the PING call, and I have opened an issue to encourage work to be done to make the Privacy Considerations section more extensive. The issue filed as part of this review is at: https://github.com/w3c/PNG-spec/issues/282

Please let me know if I can clarify or help on the issue @svgeesus!

[pes10k]

@AramZS just wondering, can this be closed out?

[pes10k]

(nvm, @AramZS, looks like the above is sorted and we'll close it out)