Bug 273591 – Copy Image contextual menu item copies png images as tiff

• Status: NEW
• Component: HTML Editing

[Jeff Johnson]

Example: https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/PNG_transparency_demonstration_1.png/560px-PNG_transparency_demonstration_1.png

When copying a png image, the pasteboard types include public.tiff first and do not include public.png. This is in contrast to Chrome and Firefox, whose pasteboard types have public.png first.

[Jeff Johnson]

This is problem when the paste targe is expecting a png.

[Said Abou-Hallawa]

When copying the above PNG image, these are the formats which get published to the pasteboard by different browsers:

WebKit/Safari:

    public.tiff
    WebURLsWithTitlesP-boardType
    Apple URL pasteboard type
    public.url
    public.url-name
    public.utf8-plain-text
    com.apple.flat.rtfd
    com.apple.webarchive

Chrome:

    public.png
    public.html
    org.chromium.source-url


FireFox:

    public.png
    public.tiff
    public.html

[Said Abou-Hallawa]

I think these formats get published by WebKit in this function:

void Pasteboard::write(const PasteboardImage& pasteboardImage)

[Radar WebKit Bug Importer]

<rdar://problem/127396235>

[Alexey Proskuryakov]

rdar://108612545