Issue with "image-orientation": cross-origin limitations

[matthewwithanm]

MDN URL: https://developer.mozilla.org/en-US/docs/Web/CSS/image-orientation

What information was incorrect, unhelpful, or incomplete?

As discussed in w3c/csswg-drafts/issues/5165, this behavior is no longer supported for cross-origin images. This severely limits its usefulness and means that the old default behavior (where EXIF data was ignored) can no longer be achieved for cross-origin images.

• Firefox bug (Open)
• Chromium bug (Closed)
• Webkit bug (Closed)

What did you expect to see?

The page should probably have a big callout about this.

Did you test this? If so, how?

Yes, I created a page that loads an image with an EXIF rotation and set image-orientation: none on it. When using a cross-origin image, the image was flipped according to the EXIF data (in Chrome). When using a same-origin image, the EXIF data was ignored.

MDN Content page report details

• Folder: en-us/web/css/image-orientation
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/CSS/image-orientation
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/css/image-orientation/index.md
• Last commit: 0469140
• Document last modified: 2021-09-15T02:25:12.000Z

[tlylt]

Hi there,

• Firefox bug is now closed (~3 months ago)
• there's no mention of this change in the CSS-images-3 draft

I am not sure if I can find any official reference on this change besides the csswg-drafts issue, @sideshowbarker should we still proceed now with adding a call-out on this or?

[sideshowbarker]

should we still proceed now with adding a call-out on this or?

Yeah — MDN should document what browsers actually do, even in cases where it differs from what the current spec states.