Bug 273591

Summary:	Copy Image contextual menu item copies png images as tiff
Product:	WebKit	Reporter:	Jeff Johnson <opendarwin>
Component:	HTML Editing	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ap, karlcow, sabouhallawa, webkit-bug-importer, wenson_hsieh
Priority:	P2	Keywords:	InRadar
Version:	Safari 17
Hardware:	Unspecified
OS:	macOS 13

Description Jeff Johnson 2024-05-01 16:55:11 PDT

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.

Comment 1 Jeff Johnson 2024-05-01 16:55:56 PDT

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

Comment 2 Said Abou-Hallawa 2024-05-01 17:23:35 PDT

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

Comment 3 Said Abou-Hallawa 2024-05-01 17:25:34 PDT

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

void Pasteboard::write(const PasteboardImage& pasteboardImage)

Comment 4 Radar WebKit Bug Importer 2024-05-01 17:31:38 PDT

<rdar://problem/127396235>

Comment 5 Alexey Proskuryakov 2024-05-06 13:06:56 PDT

rdar://108612545