Image in PDF shows up as a black box

[johnhok]

Attach (recommended) or Link to PDF file here:
pdf-jpg-black.pdf

Configuration:

• Web browser and its version: Chrome 84.0.4147.125 (Official Build) (64-bit)
• Operating system and its version: OSX 10.15.6 (19G73)
• PDF.js version: PDF.js: 2.6.248
• Is a browser extension: no

Steps to reproduce the problem:

1. Open PDF in PDF.js

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)

[THausherr]

This is a JPX image with an indexed colorspace with 4 bits per component. This file has the same problem (page 11, bottom right)
https://issues.apache.org/jira/secure/attachment/12655396/PDFBOX-2204-012411.pdf

[asimowski]

We have the same problem. Any workaround or solution?

Sample:
2 JPX images on left.
JPXimageprobem.pdf

[THausherr]

That one has 3 images with 4 bits per component. Of these, 2 are JPX images with DeviceGray colorspace and these don't get rendered.

[justinjdickow]

@THausherr Do you happen to have a recommendation for a workaround for this issue?

[THausherr]

I'm not with this project, I just hang around here and analyzed the file. If you created the file, then avoid creating 4 bit images.

[justinjdickow]

FYI this issue was fixed for us by opening the PDF in Preview on MacOS > file > export... and choosing to export as "PDF/A".

[quaoaris]

This seems to be a dupe of #4648