File Formats

ICC Profile

Definition

An ICC profile is a standardized data file that characterizes a color input or output device, describing how that device reproduces color so that color management systems can translate colors accurately between different devices and color spaces.

Context

An ICC profile (named after the International Color Consortium) is a standardized data file that describes the color reproduction characteristics of a device or color space. These profiles enable color management systems to accurately translate colors between devices, ensuring that the red in a photograph looks the same on your monitor, proof printer, and final press output.

How ICC Profiles Work

ICC profiles serve as a "translation dictionary" for color:

Characterization: The profile maps how a device handles colors
Connection: Colors convert through a device-independent reference space (PCS)
Translation: The destination profile maps colors to the output device

This three-step process ensures accurate color reproduction regardless of the devices involved.

Types of ICC Profiles

Input Profiles

Describe how cameras or scanners capture color
Convert device RGB to reference color space
Examples: Camera Raw profiles, scanner profiles

Display Profiles

Describe monitor color characteristics
Enable accurate soft proofing
Created through monitor calibration
Should be updated regularly

Output Profiles

Describe printer/press color reproduction
Include paper and ink characteristics
Most critical for accurate printing
Examples: FOGRA51, GRACoL2013, SWOP

Device Link Profiles

Direct device-to-device conversion
Skip intermediate PCS conversion
Used in high-volume production
Faster processing, specific use cases

Profile Structure

Header Information

Profile version
Device class (monitor, printer, etc.)
Color space
Rendering intent

Tag Table

Color lookup tables (CLUTs)
Tone curves
Gamut boundary description
White point and black point

Standard Print Profiles

Profile	Use Case
FOGRA51	European coated paper, offset
FOGRA52	European uncoated paper, offset
GRACoL2013	North American coated, #1 grade
SWOP	North American web offset
PSO	Process Standard Offset
ISO Coated v2	General commercial printing

Creating Custom Profiles

When Custom Profiles Are Needed

Specific paper and ink combinations
Specialty substrates
Digital presses with unique characteristics
Large format and textile printing

Profiling Process

Print profiling target (IT8, ECI2002)
Measure patches with spectrophotometer
Generate profile using profiling software
Validate with test images
Install and deploy profile

Profiling Software

i1Profiler (X-Rite)
ColorThink (CHROMiX)
ProfileMaker (X-Rite)
basICColor (ColorLogic)

Using ICC Profiles

In Design Applications

Assign profiles to documents
Convert between color spaces
Soft proof with output profiles
Export with embedded profiles

In RIP Software

Select output profile for production
Handle untagged images
Apply device link profiles
Manage spot color reproduction

In Web to Print

Server-side color conversion
Automated profile selection by product
Standardized output for consistency
Customer file handling

Profile Selection Best Practices

Match conditions: Choose profiles that match actual print conditions
Use standards: Start with industry-standard profiles
Verify compatibility: Ensure profile version matches software
Update regularly: Refresh custom profiles when conditions change
Test before production: Validate profiles with proof prints

Common ICC Profile Issues

Issue	Cause	Solution
Colors look washed out	Wrong profile assigned	Check document color settings
Profile mismatch warnings	Embedded vs. working space conflict	Convert to working space or preserve
Posterization	Old or incompatible profile	Update to current version
Out-of-gamut colors	Design exceeds printable range	Use soft proofing to identify issues

Embedding Profiles

When to Embed

Files leaving your controlled workflow
Images for web to print upload
Client deliverables
Cross-platform file sharing

When Not to Embed

Files within standardized production
When profile is implied by specification
Large batch processing (for file size)

Industry Standards

ICC Specification

Current version: ICC.1:2022 (v5)
Maintained by International Color Consortium
Ensures cross-platform compatibility

Related Standards

ISO 15076: ICC profile format
ISO 12647: Print process control
PDF/X: Profile embedding requirements

Frequently Asked Questions

What is an ICC profile used for in printing?

An ICC profile describes how a specific device, such as a monitor, scanner, or printer, reproduces color, enabling color management software to translate colors accurately between devices. By using ICC profiles, printers can ensure that the colors in a design file are reproduced as accurately as possible on the final printed product.

Should I embed ICC profiles in my print files?

Yes, you should embed ICC profiles when sending files to external print providers or uploading to web to print systems, as it preserves your intended color appearance. However, within a standardized internal production workflow where the output profile is already known, embedding may be unnecessary and can be skipped to reduce file size.

How often should ICC profiles be updated?

Custom ICC profiles should be updated whenever print conditions change, such as switching to a new paper stock, ink set, or printer, and after each device recalibration. For most production environments, recalibrating and reprofiling on a monthly basis or after any significant maintenance ensures consistent color accuracy.

Related Terms

Soft Proofing

Soft proofing is the process of viewing a digital simulation of how a printed piece will appear on a calibrated monitor, allowing designers and customers to preview color accuracy, layout, and overall appearance before committing to physical production.

RIP (Raster Image Processor)

A Raster Image Processor (RIP) is software or hardware that converts digital files containing vector graphics, fonts, and images into rasterized bitmap data that printers can output, controlling color, resolution, and screening for optimal print quality.

PDF/X

PDF/X is a family of ISO standards defining subsets of PDF specifically designed for reliable graphic arts and print production file exchange, ensuring files contain all necessary elements for accurate reproduction while prohibiting features that could cause output problems.

Color Management

Color management is a system of hardware calibration, software tools, and standardized color profiles that ensures consistent, predictable color reproduction across all devices in a workflow, from monitors and scanners to proofing devices and production printers.

In-House Manufacturing

A company that owns and operates its own production equipment and facilities rather than outsourcing to third-party printers.

Imposition

The process of arranging multiple pages or images on a single press sheet in a specific layout to optimize printing efficiency, minimize waste, and ensure correct page order after folding and trimming.

ISO Certified

Certification to international standards (ISO 9001 quality, ISO 14001 environmental, ISO 27001 information security) demonstrating audited management systems.