EthanSuquetandClaude Opus 5.5 873d293017 PDF: PDF/X-4 flags device RGB under its CMYK output intent ...

check_pdfx4 didn't look at colour spaces, so a placed RGB PNG (or a CMYK
TIFF converted to RGB, #35) went into a PDF/X-4 file as DeviceRGB under the
CMYK output intent with an empty warnings list. PDF/X-4 lets RGB in only
when it is colour-managed: ICCBased, or DeviceRGB remapped by a DefaultRGB
colour space. DeviceCMYK and DeviceGray are the intent's own values.

The check now reads the file with hayro-syntax and, when the PDF/X output
intent's profile has four channels, walks each page: its content, the
images, forms (placed PDFs), patterns, shadings and soft masks it uses, and
the transparency groups. It reports DeviceRGB (or Indexed over it) images
with their object number and pixel size, RGB fills and strokes, RGB
gradients, RGB inline images and groups blending in RGB, each with the pages
it is on, unless a DefaultRGB is in scope. Like the other PDF/X findings
these are export warnings. The separate "some transparency groups still
blend in RGB" warning is gone: the group check covers it, with the page.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-06 16:13:06 -04:00

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src

PDF: PDF/X-4 flags device RGB under its CMYK output intent

2026-10-06 16:13:06 -04:00

Cargo.toml

PDF: placed PDF 1.7 files go into PDF/X-4 exports

2026-10-06 09:04:49 -04:00