eXIf Exchangeable Image File (Exif) Profile

[svgeesus]

The eXIf Exchangeable Image File (Exif) Profile chunk should probably be added to the main PNG specification, rather than being off to the side in an extensions document.

[svgeesus]

Raised by Phil Harvey phil@owl.phy.queensu.ca

Although the original eXIf specification didn't mandate a location for the eXIf chunk,
web developers are advising to ignore the eXIf if it comes after IDAT:

w3c/csswg-drafts#4929

As such, you may want to consider amending the specification to reflect this.
Minimally, it should be recommend to place eXIf before IDAT for web compatibility.
Or possibly requiring it to come before IDAT.

[svgeesus]

Pull request #81

[svgeesus]

As such, you may want to consider amending the specification to reflect this.
Minimally, it should be recommend to place eXIf before IDAT for web compatibility.
Or possibly requiring it to come before IDAT.

Note that the above PR just merges in the old text from the extensions document.

I agree that this restriction should be added, but plan to do that as a separate change.

[ProgramMax]

With pull request #81 merged, can this issue be closed?

Should the separate change for the restriction also have a separate issue?

[ProgramMax]

Ping

[svgeesus]

Yes this is all in the spec now