3 people 06a7b9a7ca Issue #666: images made into a PDF keep their ICC profile (#729) ...

Create from images (doc_create, and image_xobject for stamps, signatures and
inserted images) dropped a JPEG's or PNG's embedded ICC profile, so a CMYK
JPEG became untagged /DeviceCMYK.

- JPEG: the APP2 ICC_PROFILE chunks are joined by sequence number; a profile
  with a missing or repeated chunk is ignored.
- PNG: the iCCP profile is read.
- A profile whose header is sound (acsp) and whose colour space matches the
  image (GRAY/RGB/CMYK for 1/3/4 components) becomes [/ICCBased <stream>]
  with /N and the device space as /Alternate. Anything else keeps the device
  space, as before. JPEG data and an Adobe CMYK /Decode are unchanged.
- Images in one document that carry the same profile share one profile
  object.

TIFF profiles are not read yet.

Co-authored-by: lloyd <lloyd@stackworx.io>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-10 06:14:51 -04:00

..

extract.rs

Rename PrintCraft to PdfCraft (#174)

2026-10-07 16:03:57 -04:00

lib.rs

Issue #666: images made into a PDF keep their ICC profile (#729)

2026-10-10 06:14:51 -04:00

tests.rs

Issue #666: images made into a PDF keep their ICC profile (#729)

2026-10-10 06:14:51 -04:00