Bug 230226

Summary:

AX iOS: Make PDFs loaded via <embed> accessible

Product:

WebKit

Reporter:

Tyler Wilcock <tyler_w>

Component:

Accessibility

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

andresg_22, brennan.young, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

iPhone / iPad

OS:

Unspecified

See Also:

https://bugs.webkit.org/show_bug.cgi?id=229556
https://bugs.webkit.org/show_bug.cgi?id=230167

Attachments:

Description	Flags
Testcase	none

Description Tyler Wilcock 2021-09-13 11:45:42 PDT

Created attachment 438061 [details]
Testcase

<embed name="plugin" src="file:///path/to/example.pdf" type="application/pdf">

These PDFs are rendered fine, but are not accessible to VoiceOver.

https://bugs.webkit.org/show_bug.cgi?id=229556 fixed this for Mac, but not for iOS.

Comment 1 Radar WebKit Bug Importer 2021-09-13 11:46:10 PDT

<rdar://problem/83065664>

Comment 2 Brennan Young 2022-03-07 05:47:26 PST

Note that only well-formed PDF/UA files contain the semantic information needed to generate an accessibility tree accurately. "Ordinary" PDF files (i.e. those without semantic tags) are likely to fail even in the best implementations.

However, PDF/UA in-browser should generate an accessibility tree. It does not.

This problem is not limited to iOS, and also appears on Mac Safari.

A possible workaround is stymied by another bug (223798) with aria-owns.