Homechevron_rightStandardschevron_rightISO/IEC 18004:2024

Active — Edition 4; revision in developmentInternational Standardupdate Standard Updated: Aug 2024fact_check Fact checked: Oct 20, 2026

ISO/IEC 18004:2024

Information technology — Automatic identification and data capture techniques — QR code bar code symbology specification

apartmentPublishing Organization:International Organization for Standardization (ISO)

Global Technology Retail Manufacturing Logistics & Transportation Healthcare

Standard Introduction

ISO/IEC 18004:2024 is an active — edition 4; revision in development standard published by International Organization for Standardization (ISO). It is commonly used across Technology, Retail, Manufacturing, Logistics & Transportation, Healthcare and applies in Global.

Use this page to review the official documentation, current status, and the certification or assessment bodies most commonly associated with ISO/IEC 18004:2024.

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QR Code symbology

Defines the structure and characteristics of the QR Code barcode symbology rather than a business-specific identifier or payload policy.

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Encoding and formats

Covers data character encoding, symbol formats, dimensions, error correction and the reference decoding algorithm.

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Production baseline

Provides production-quality requirements and selectable application parameters; final print quality is assessed using the applicable verification method.

list_alt Implementation decisions

Choose the QR Code symbol and data appropriate to the application
Encode the intended payload correctly
Select an error-correction level and symbol size that fit the use case
Preserve the required quiet zone and module geometry
Control contrast, printing and physical placement
Test the final artifact in expected scanning conditions
Use ISO/IEC 15415 for objective 2D print-quality grading

Who Needs to Comply?

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Software teams, designers, printers, manufacturers, packaging teams and solution providers that generate, render, print or decode QR Codes for products, documents, payments, marketing, logistics or healthcare workflows.

Key Requirements

Define the application and payload

Identify what the QR Code must carry and which external application rules govern the data. ISO/IEC 18004 defines the symbology but does not grant identifier ownership or make arbitrary content valid.

Generate a conforming symbol

Apply the specified encoding, symbol format, error correction, masking, dimensions and quiet-zone requirements for the selected QR Code.

Protect readability in the design

Maintain usable module contrast and geometry. Logos, colours, shapes, resizing and low-resolution export can reduce decoding margin even when a generator still shows a preview.

Validate and verify final output

Decode the intended payload from representative final artifacts and use ISO/IEC 15415 when an objective two-dimensional print-quality grade is required.

Implementation Roadmap

Step 1schedule Duration: Planning estimate: 1-3 days

Define content and application rules

Specify the payload, target scanners, physical context and any governing application profile. Confirm identifier ownership, URI syntax, privacy and security requirements outside the symbology standard.

Step 2schedule Duration: Design estimate: 1-5 days

Generate the symbol

Choose the encoding, error-correction level, module size and output format. Preserve the quiet zone and avoid decorative changes that compromise finder patterns or module contrast.

Step 3schedule Duration: Validation estimate: 1-5 days

Test representative outputs

Decode the exact payload from final-size screens, labels, packaging or other artifacts across expected devices, distances, lighting and surfaces.

Step 4schedule Duration: Ongoing

Verify and control production

Where an objective quality grade is required, verify final printed symbols using ISO/IEC 15415 and retain the settings and reports. Recheck after design, material, printer or process changes.

Compliance Checklist

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checklist Data and symbol

Document the payload, owner, destination and governing application rulesRequired
Use the current published ISO/IEC 18004 edition as the symbology baselineRequired
Select error correction and symbol dimensions for the real use caseRequired

checklist Design and output

Preserve finder patterns, module geometry, quiet zone and sufficient contrastRequired
Export at a resolution or vector format suitable for the final physical sizeRequired
Treat logos, custom colours and module shapes as changes requiring retestingRecommended

checklist Validation and evidence

Decode the final artifact using representative devices and conditionsRequired
Use ISO/IEC 15415 when a formal print-quality grade is requiredRecommended
Retain approved payloads, artwork versions, test results and change historyRecommended

Which QR Code reference answers which question?

Use the symbology standard to construct the symbol, the application standard to define its data, and the quality standard to verify printed output.

Reference	Primary question	Role
ISO/IEC 18004:2024	How is a QR Code encoded and constructed?	Symbology
ISO/IEC 15415:2024	How is its 2D print quality measured?	Verification
GS1 General Specifications 26.0	Which GS1 identifiers and data rules apply?	Application rules

Common Misconceptions

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Myth

A QR Code generator guarantees compliance.

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Reality

A generator renders supplied data. The user must still apply the correct application rules, protect the symbol design and validate or verify final output.

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Myth

More error correction makes any design reliable.

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Reality

Error correction can recover limited damage, but it does not excuse damaged finder patterns, inadequate quiet zones, poor contrast, unsuitable size or excessive distortion.

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Myth

The Edition 5 working draft is already the required standard.

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Reality

The draft is under development. ISO/IEC 18004:2024 remains the current published edition until a replacement is published.

Penalties & Enforcement

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ISO/IEC 18004 is a voluntary international symbology standard, not a certification or identifier-licensing scheme. Contracts, application standards or regulations may separately require a particular payload, identifier, placement or quality grade. Nonconforming symbols can cause scan failures, rejected artwork, relabelling or broken workflows.

Frequently Asked Questions

Does ISO/IEC 18004 define the content of every QR Code?

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No. It defines the QR Code symbology. Business rules for a URL, payment payload, product identifier, health record or other content come from the relevant application specification, contract or regulation.

Is ISO/IEC 18004:2024 still current?

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Yes. ISO lists the 2024 fourth edition as published. Work on Edition 5 is in development, but a working draft does not replace the current published edition.

Can QRCode.Fun be used to create a QR Code?

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Yes, QRCode.Fun can generate and export QR Code artwork and is linked here as a third-party tool. Users remain responsible for the payload, application rules, final dimensions, readability and any required ISO/IEC 15415 verification. It is not an ISO conformity assessment or calibrated verifier.

Does a QR Code that scans on one phone meet the standard?

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A successful scan is a useful functional test, but it is not objective print-quality verification. Test representative devices and conditions, and use ISO/IEC 15415 when a formal grade is required.

Can I add a logo or custom colours?

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Decorative changes may still decode, especially with error correction, but they can reduce robustness. Protect finder patterns and contrast, preserve the quiet zone and retest the final artifact at its actual size.