Flimpa

RGB to CMYK Converter

Professional RGB→CMYK conversion with ICC profiles, TAC control, and channel preview.

Drop image or PDF

PNG, JPG, TIFF, PSD, PDF · up to 50 MB · converts RGB to print CMYK

Convert screen RGB artwork to print-ready CMYK using industry ICC profiles (FOGRA39, PSO Coated v3, GRACoL, SWOP) or your print house profile. Choose rendering intent, set a total ink limit, preserve pure black as 100% K, and download TIFF, PDF/X-1a, PSD, or 300 DPI JPG.

Target ICC profile

The destination profile defines the print condition. Ask your print house which one they require:

  • FOGRA39 / FOGRA51 — coated stock in Europe
  • FOGRA52 — uncoated stock
  • GRACoL2006 — US sheetfed offset
  • SWOP — US web presses

If they send a custom .icc / .icm, upload that — it is more accurate than any generic preset.

Rendering intent

  • Relative Colorimetric — keeps in-gamut brand colors; best for logos, solids and vector graphics.
  • Perceptual — compresses the whole image gamut smoothly; usually best for photographs.
  • Absolute Colorimetric — matches a hard proof, including paper white simulation.
  • Saturation — favors vivid charts over exact hue.

Who it is for

  • Prepress operators preparing files for offset or digital print
  • Designers delivering CMYK packages to print shops
  • Anyone who needs controlled color conversion instead of a silent RGB→CMYK shift in the RIP

What you get

  • ICC-based conversion via LittleCMS / Ghostscript
  • TAC / TIL clamp with violation highlight on the separation preview
  • Optional preserve of pure black as K-only

Files are processed asynchronously and removed after temporary storage.

Security and privacy

  • Encryption at rest

    Files are encrypted during storage with AES-256-GCM using a unique key per file

  • Auto-deletion

    Uploaded and processed files are removed after the session ends

  • Temporary sessions

    Processing sessions expire automatically and are not kept as a permanent archive

  • Protected download links

    Downloads require a short-lived access token — not a public permanent URL

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FAQ

Ask your print house. In Europe coated offset is often FOGRA39 or PSO Coated v3 (FOGRA51); uncoated stock uses FOGRA52. US sheetfed jobs frequently use GRACoL2006; web presses may require SWOP. If they send a custom .icc/.icm, upload that instead.

Yes. Files are transferred over a secure connection, encrypted while stored on the server, and automatically deleted. Flimpa does not store documents permanently and does not use them to train models.