[Webkit-unassigned] [Bug 212405] New: Support density-corrected size from EXIF metadata

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212405

            Bug ID: 212405
           Summary: Support density-corrected size from EXIF metadata
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: noam at webkit.org

A new proposal to the HTML spec, following lack of traction to Content-DPR: https://bugs.webkit.org/show_bug.cgi?id=145380

The proposal is to use 5 EXIF attributes (XDimension/YDimension/XResolution/YResolution/ResolutionUnit) to allow an image to declare its "intrinsic preferred size" and "intrinsic resolution" - and only if they match each other, affect its intrinsic (natural) size accordingly.

Creating this bug to follow progress, in parallel with a similar Chromium bug, and the proposals to HTML spec. 

WICG: https://discourse.wicg.io/t/proposal-exif-image-resolution-auto-and-from-image/4326/24
HTML spec proposal: https://github.com/whatwg/html/pull/5574
WPT: https://github.com/web-platform-tests/wpt/pull/23789
Chromium bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1069755

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