TIFF CMYK — print-ready raster maps for offset and digital printing

TIFF CMYK is a specialization of TIFF for offset and digital print production. The raster image is stored in the four-channel Cyan-Magenta-Yellow-Key (Black) color model instead of the familiar RGB, with an embedded ICC profile (usually Coated FOGRA39 for European offset or ISO Coated v2 for digital print), at 300 dots per inch resolution and without lossy compression. Any print house in Russia or abroad will accept TIFF CMYK as the standard input format for printing an atlas, poster, or cover. If you need to mount a 50×70 cm map of your city in an office on 250-gsm coated paper — this is the final format you'll hand the printer.

History: 35 years of typography standard

TIFF (Tagged Image File Format) appeared in 1986 from Aldus Corporation — the company behind PageMaker, the key DTP tool of the 1980s. TIFF was initially a format for scanners and exchange between DTP programs. From 1990 Adobe acquired Aldus and developed TIFF into a full typography-prep standard.

CMYK as a color model was the foundation of printing since the 1900s. Four-color offset — Cyan, Magenta, Yellow, Black (K from Key plate) — became the dominant mass-print technology by mid-20th century. When DTP went mainstream in the 1980s a digital container for CMYK data was needed, and TIFF became it.

By 1994 ISO standardized ICC color profiles — a format describing exactly how colors should display on a specific device (monitor, printer, press). Since then CMYK TIFF without an ICC profile is considered incorrect: colors can drift 10–20% between different printers. Standard ICC profiles for the print industry — Coated FOGRA39 (coated paper, Europe), Uncoated FOGRA47 (uncoated, Europe), GRACoL 2013 (US, coated).

Today TIFF CMYK remains the acceptance standard for all serious print houses. PDF/X (specialization of PDF for printing) is more popular for multi-page documents, but for single images (poster, cover, atlas spread) TIFF CMYK is still the first choice.

What's inside a TIFF CMYK file

TIFF is a tag-structured container: every parameter (size, color model, compression, ICC profile) is stored as a numbered tag in the header. After the header — pixel data.

Key tags for CMYK TIFF: - PhotometricInterpretation = 5 (Separated, which for CMYK means 4-channel Cyan/Magenta/Yellow/Black storage) - SamplesPerPixel = 4 - BitsPerSample = 8, 8, 8, 8 (8 bits per channel; for high-end sometimes 16) - XResolution = 300, YResolution = 300, ResolutionUnit = inch (300 dots per inch) - ICCProfile (binary tag containing the ICC profile inside the file)

Pixel data is stored interleaved C, M, Y, K per pixel. Each value runs 0 (no ink) to 255 (full ink coverage). Unlike RGB where 255 is white, in CMYK 255 is full ink-fill of that channel.

CMYK TIFF file size is 1.3× larger than an equivalent RGB TIFF (4 channels vs 3). Uncompressed, a 50×70 cm poster at 300 DPI is 5905×8268 pixels × 4 channels = 195 MB. With LZW compression — 50–80 MB. With ZIP/Deflate — 60–90 MB.

CMYK TIFF supports several compression types: None, LZW (lossless), ZIP/Deflate (lossless), PackBits (lossless, simple), JPEG-in-TIFF (lossy — rarely used). For printing the standard is LZW or none. JPEG-in-TIFF creates artifacts on thin labels, unacceptable in typography.

Who needs TIFF CMYK: five roles

Atlas designer. Cartographic publishers (Atlas Print, Karta Ltd, NoLimit, Esri Press) accept source materials for printing as TIFF CMYK 300 DPI with embedded ICC. One atlas spread is typically one TIFF file of 200–500 MB. The designer assembles several spreads in InDesign and hands the print house a PDF/X-1a for final printing.

Architect with a large plan. District layouts, project presentations, exhibition posters — all printed on wide-format printers (HP DesignJet, Epson SureColor). The printer accepts CMYK TIFF directly via RIP software or driver. Poster size can reach A0 (841×1189 mm) or larger.

Museum cartographic department. A museum map-board, park navigation map, information stand — all printed as one large poster, typically 700×1000 mm. CMYK TIFF at 300 DPI ensures accurate color rendering of labels and building contours.

Tourist booklet and guidebook. A longform piece about Moscow with a detailed historic-center map — the map is printed as a magazine spread, typically 420×297 mm A3 landscape. CMYK TIFF is standard input for a layout artist in InDesign.

Marketing poster. Posters for business centers, banks, resort-town advertising — terrain maps on 600×900 mm printed on adhesive vinyl for outdoor billboards. CMYK TIFF, ICC FOGRA39, 200–250 DPI (DPI is reduced for large format).

Software for TIFF CMYK: seven programs

Adobe Photoshop. Industry standard for CMYK conversion. Image → Mode → CMYK Color, Color Settings → Working Spaces → CMYK to assign ICC. Save As → TIFF, LZW compression. adobe.com/photoshop

GIMP with GMIC plugin. Open-source alternative. GIMP itself handles CMYK poorly (RGB-native), but GMIC and the Krita plugin provide acceptable conversion. Not ideal for commercial print, but sufficient for prototypes. gimp.org

Affinity Photo. Paid (~$70 one-time), Mac/Windows/iPad. Full CMYK, ICC, the same tools as Photoshop. Budget alternative. affinity.serif.com/photo

Scribus. Open-source DTP, an InDesign analog. Can write CMYK TIFF, import into layout, prepare for print. Free. scribus.net

ImageMagick. Command line for batch conversion: magick map.png -profile sRGB.icc -profile FOGRA39.icc -density 300 -compress lzw map.tif. imagemagick.org

LibTIFF + Python (Pillow). Programmatic approach. Pillow with pyimagecms (or lcms2) gives scripted RGB → CMYK conversion with ICC profile. Best path for production pipelines.

Adobe Bridge. Not an editor but a previewer for many TIFFs at once. Useful when working with map-poster series: see all previews in one grid. adobe.com/products/bridge

Pitfalls and tips

RGB → CMYK gamut shift. RGB color space is wider than CMYK. Bright saturated colors (electric blue, neon pink, lime green) that display easily on screen are out of CMYK gamut. On conversion they shift to the nearest CMYK equivalent, looking "duller" than the original. Check all map colors in Photoshop View → Gamut Warning before conversion.

ICC is mandatory. Without an embedded ICC profile, the print house doesn't know which CMYK you worked in. By default they'll apply their profile, potentially shifting all colors. Always embed ICC via "Save As → TIFF → Save Color Profile".

Print resolution. 300 DPI is the standard for A4–A3 print at close viewing. For A0+ posters you can drop to 150 DPI (longer viewing distance). For billboards — 72–100 DPI. Too-high DPI on large posters creates huge files without visual gain.

LZW vs ZIP vs no compression. LZW is the standard, supported by all print houses, lossless, compresses 30–50%. ZIP/Deflate — better compression but not all 1990s/2000s RIP software understands it (modern — all do). No compression — for maximum compatibility, but huge files. Standard choice — LZW.

Black point compensation. When CMYK-converting, enable "Black Point Compensation" in Photoshop Color Settings. This preserves detail in dark map areas (shadows of buildings, forests). Without it dark tones "crush" to black — especially visible on line-art details.

Line thickness ≥0.25 mm. Print presses have a physical minimum line thickness. Street labels at ≥6 pt font, building contours ≥0.3 pt. On screen a thin line looks crisp, but on print it becomes invisible or broken. When exporting from osm2cdr.ru use PDF (vector) if thin-line precision matters.

Total Ink Coverage ≤ 300%. In CMYK each channel can be 0–100%, but the sum of all four channels on one pixel must not exceed 300% — otherwise paper won't dry, inks mix. Deep black = C=60, M=40, Y=40, K=100 (total 240%) is the standard recipe. Without CMYK-aware export you may end up with 400% where you don't want it.

Spot colors / Pantone. For premium typography (corporate brand colors) Pantone spot colors are added over the 4-channel CMYK. TIFF supports extra channels for spot colors. If you need exact corporate colors — discuss spot-channel format in TIFF with your print house.

How to prepare CMYK TIFF from an OSM osm2cdr.ru export

osm2cdr.ru exports to PDF, SVG, PNG — all in RGB color space. For print typography conversion is needed. Step-by-step pipeline for a Russian print house:

Step 1. On osm2cdr.ru export a district or city to PNG at 300 DPI resolution. For a 50×70 cm poster this means roughly 5905×8268 pixels — specify in the export form.

Step 2. Open the PNG in Photoshop. Assign source ICC profile: Edit → Assign Profile → sRGB IEC61966-2.1.

Step 3. Convert to CMYK: Edit → Convert to Profile → Destination "Coated FOGRA39 (ISO 12647-2:2004)". Enable Black Point Compensation. Intent — "Perceptual" (for photographic images) or "Relative Colorimetric" (for line-art maps with exact colors).

Step 4. Check Total Ink Coverage: Window → Info Panel → options → Show CMYK. Click on dark areas, verify C+M+Y+K ≤ 300%. If exceeded — Image → Adjustments → Curves → black curve → lower it.

Step 5. Save: File → Save As → TIFF. In the dialog: - Image Compression: LZW - Pixel Order: Interleaved - Byte Order: IBM PC (more compatible) - Save Image Pyramid: OFF (for single-page output) - Save Transparency: OFF (posters are opaque) - ICC Profile: Embedded (checkbox ON, mandatory)

The file is ready to send to the print house. Standard path — upload to FTP or Yandex.Disk of the print house, fill in paperwork (run length, paper, packaging). In 1–3 days — the print run is ready.

Alternative — command line via ImageMagick for batch processing many maps:

magick map.png \
  -profile sRGB.icc \
  -profile FOGRA39.icc \
  -intent perceptual -black-point-compensation \
  -density 300 \
  -compress lzw \
  map_cmyk.tif

Related formats and resources

• TIFF — base format for other TIFF variants
• PDF — universal format for multi-page publications
• PDF/X — PDF specialization for print
• EPS — vector format for print typography
• PSD — Photoshop native format for layers and masks

Sources

• Adobe TIFF specification (revision 6.0) — adobe.io/open/standards/TIFF.html
• ISO 12647-2 (offset printing color standard) — iso.org/standard/57833.html
• FOGRA39 ICC profile — color.org
• LibTIFF Reference — libtiff.gitlab.io/libtiff/
• Photoshop CMYK Color Management — helpx.adobe.com/photoshop/using/color-management.html
• Wikipedia, TIFF — en.wikipedia.org/wiki/TIFF