Embedded CMYK jpegs have wrong colors when exported to PDF
Migrated from https://bugs.launchpad.net/inkscape/+bug/1760323
From 2018-03-31
Summary:
Pavel Grishaev wrote...
It happens only on Ubuntu (I have Xenial), not on Windows, and only if I use inkscape as command utility (server). Versions both 0.92.2 and 0.92.3. External embedded CMYK jpegs (from directory near SVG) in input SVG become awful in output PDF. If I output to PNG - no problem, but only PDF.
Steps to reproduce:
I wish I knew exactly what Pavel did and why it works only in Windows. This is what I did.
- followed the steps outlined here as closely as possible
- excluding Step 7: not include any bitmap images
- imported the attached JPG into Inkscape
- for the sake of experimentation, I added five 5mm strokes, C, M, Y and K plus Red
- Red to test any perceptual difference when toggling Color Management
- Conclusion: no perceptual difference
- Red to test any perceptual difference when toggling Color Management
-
Save a Copy…
as CMYK.pdf (see below)
What happened?
This...
What should have happened?
Not that, this...
CMYK02.pdf.zip 553K
Attachments:
The original CMYK jpg...
CMYK.jpg.zip 558K
My test SVG...
CMYK.svg.zip 628K
Migrator's Notes:
-
CMYK02.pdf
was created in Scribus 1.5.4 -
identify
confirms the original JPG and the PDFs are indeed CMYK - Imported into Scribus, it's visually obvious (dulled colors) that the PDF is CMYK
- There are many related issues (a few migrated by me!) but none that address this specific issue
Version Info:
Original issue:
- Inkscape Version: 0.92.2/0.92.3
- Operating System: Ubuntu Xenial (16.04 LTS)
Tested on:
- Inkscape Version: 1.1-dev (cc619caa, 2020-09-10)/1.0.1(1.0.1+r73+1)
- Operating System: 1.1-dev (cc619caa, 2020-09-10)/Ubuntu 18.04.5 LTS