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Overprint Support #7360

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richerm opened this issue May 26, 2016 · 1 comment

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@richerm
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commented May 26, 2016

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.
overprint-compare

Lack Overprint Support

  • (Page #1 - Item 3,4,5,6,7)
  • (Page #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

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commented May 26, 2016

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.

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