Overprint Support

[richerm]

Link to PDF file (or attach file here):
PDFX-ready_Output-Test_301d_X4.pdf

Configuration:

• Chrome 51, Firefox 45, IE11
• Windows 7 / 10
• PDF.js version: Latest PDF.JS Demo Site
• Is an extension: No

Steps to reproduce the problem:

1. Upload the document to the PDF.JS demo site.
2. Compare it with what is rendered in Adobe.

What is the expected behavior?
See screenshot for comparision.

Lack Overprint Support

• (Page xobj.dict is undefined #1 - Item 3,4,5,6,7)
• (Page Figure 5 (page 6) isn't being drawn #4 - Item 25,26,27,28,29,30)

NOTE: Other unsupported features can be seen, however, we have a desire for overprint (simulated) support.

[yurydelendik]

Overprint is optional feature (and the specification does not require support for it and I think only Reader supports it). Marking as such. To properly make it work output medium must support CMYK natively and web APIs do not.

[Snuffleupagus]

Given that the points mentioned in #7360 (comment) still apply, let's close this issue as WONTFIX (or even can't fix) for now.