Skill

normalize-color-profile

Standardize a PDF's color profile — convert to sRGB (default, best for office digital printers) or CMYK FOGRA39 (for commercial print shops). Eliminates color-shift surprises caused by mixed/unspecified color spaces. Triggers on phrases like "normalize colors", "convert to sRGB", "set CMYK profile", "fix weird colors on print".

npx claudepluginhub danielrosehill/claude-code-plugins --plugin digital-printing

Tool Access

This skill uses the workspace's default tool permissions.

Preview

Convert all color content in a PDF to a single, consistent ICC profile.

SKILL.md

Similar Skills

github-deep-research

63.9k

Conducts multi-round deep research on GitHub repos via API and web searches, generating markdown reports with executive summaries, timelines, metrics, and Mermaid diagrams.

2 files

bytedance-deer-flow-1

Stats

Stars0

Forks0

Last CommitApr 27, 2026

Actions

View Source View Plugin View on GitHub View README

Help us improve

Share bugs, ideas, or general feedback.

Normalize Color Profile

Convert all color content in a PDF to a single, consistent ICC profile.

Why it matters

PDFs accumulate color from many sources — RGB photos from a phone, CMYK ads from InDesign, untagged office-doc colors. Printers interpret unspecified color unpredictably. Normalizing to one profile eliminates that variance.

Inputs

Input PDF path (required).
Target profile (optional) — default sRGB for office digital printing. Other choices:
- sRGB — IEC 61966-2.1, the safe default for office laser/inkjet, screens, and most consumer/digital workflows.
- CMYK-FOGRA39 — ISO Coated v2, European commercial print standard.
- CMYK-GRACoL — North American commercial print standard.
- Gray — convert all to grayscale (use color-to-grayscale skill instead for that case).
Output path (optional) — defaults to <input>-<profile>.pdf.

Tooling

Ghostscript with pdfwrite and ColorConversionStrategy.

sRGB recipe (default)

gs -o output.pdf \
   -sDEVICE=pdfwrite \
   -sColorConversionStrategy=sRGB \
   -sProcessColorModel=DeviceRGB \
   -dCompatibilityLevel=1.4 \
   -dEmbedAllFonts=true \
   -dNOPAUSE -dBATCH \
   input.pdf

CMYK FOGRA39 recipe

gs -o output.pdf \
   -sDEVICE=pdfwrite \
   -sColorConversionStrategy=CMYK \
   -sProcessColorModel=DeviceCMYK \
   -sDefaultCMYKProfile=ISOcoated_v2_eci.icc \
   -dCompatibilityLevel=1.4 \
   -dEmbedAllFonts=true \
   -dNOPAUSE -dBATCH \
   input.pdf

The ICC profile file (ISOcoated_v2_eci.icc) must be available — install icc-profiles on Debian/Ubuntu, or download from ECI.

Verification

gs -o /dev/null -sDEVICE=inkcov input.pdf  # before
gs -o /dev/null -sDEVICE=inkcov output.pdf # after

inkcov reports CMYK ink coverage per page; useful sanity check after CMYK conversion.

Workflow

Probe input color spaces — if everything is already sRGB, skip and report "no-op".
Confirm target profile with user if unclear.
Run conversion.
Verify and report profile of output.

Output

Color-normalized PDF.