1777352 - pdfjs renders PDF pages gray

Status: RESOLVED DUPLICATE of bug 1778068

(Firefox :: PDF Viewer, defect)

Description

[spilkerj]

Attachment: Screen Shot 2022-06-29 at 4.38.17 PM.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Firefox/102.0

Steps to reproduce:

I opened a PDF in FF 102 with the built-in PDF viewer. All files showed the same behavior.

Actual results:

The PDF pages render with a gray color (the actual PDF pages themselves, not the viewer background color), which makes it hard to read black-on-grey text and makes other parts of the PDF appear to display colors incorrectly.

I had FF 101 running on another computer, and compared all the about:config entries with "pdfjs" in them. The issue is that, new in 102, there are two additional parameters - pdfjs.pageColorsBackground and pdfjs.pageColorsForeground - set with default values of "Canvas" and "CanvasText". These appear to override the correct rendering of the PDFs.

Expected results:

The PDF page backgrounds should be rendered white, in their native color.

Deleting the two defaults and leaving the above about:config keys blank fixed the issue.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Canvas: 2D' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:lsalzman, could you have a look please?

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