2D Codes • 100% Free & Browser-Based

Free Data Matrix Barcode Generator

High-density 2D matrix barcode capable of encoding massive alphanumeric data in microscopic square areas.

11. Selected SymbologyISO/IEC 16022

Data Matrix

Data Matrix — Compact 2D code for small electronics, aerospace parts, healthcare & GS1 Digital Link.

22. Enter Barcode ValueVALID ✅

ℹ️ Full ASCII, ISO 8859-1 (extended ASCII), and binary data

⚙️ Barcode Sizing & Visual Style▼

Bar Width (2x)

Bar Height (px)

Quiet Zone Margin

Text Font Size

Bar Color

Background Color

Display Human-Readable Text

Text Position

Instant Barcode Preview

Vector Live Preview

Download Format:

TECHNICAL SPECCHECKSUM PASS

TYPE: Data Matrix

LENGTH: 13

DATA: DM-DATA-12345

What is Data Matrix Barcode?

High-density 2D matrix barcode capable of encoding massive alphanumeric data in microscopic square areas. Defined under standard ISO/IEC 16022, Data Matrix is engineered for fast, reliable optical scanning across industrial and commercial environments.

Specification	Details
Standard Symbology	Data Matrix (ISO/IEC 16022)
Character Set	Full ASCII, ISO 8859-1 (extended ASCII), and binary data
Checksum Algorithm	Reed-Solomon error correction (ECC 200)
Quiet Zone Margin	1 module width on all 4 sides
Processing Mode	100% Client-Side In-Browser (Zero Server Logs)

✅ Key Advantages

•Can be etched as small as 2mm × 2mm and still read accurately
•ECC 200 error correction allows reading even if up to 30% of the code is damaged or scratched
•Square and rectangular aspect ratio formats

📦 Common Use Cases

•Direct Part Marking (DPM) on aerospace and automotive steel parts
•Microchips, circuit boards, and smartphone electronics components
•Pharmaceutical unit-dose medication serialization (FDA UDI / EU FMD)
•GS1 2D barcode migration for retail checkout

📐Engineering Specification

Deep-Dive: How Data Matrix Encodes Data

Data Matrix is a high-density two-dimensional (2D) matrix symbology standardized under ISO/IEC 16022. Composed of square modules arranged within a perimeter finder pattern, Data Matrix can pack massive amounts of data—up to 3,116 numeric characters or 2,335 alphanumeric characters—into a footprint as tiny as 2 mm x 2 mm. It is the mandatory standard for direct part marking (DPM) in aerospace (ATA Spec 2000), automotive manufacturing, US Department of Defense item-unique identification (IUID), and global pharmaceutical track-and-trace (EU Falsified Medicines Directive & US DSCSA).

⚙️ ECC 200 Reed-Solomon Error Correction & Finder Patterns

Modern Data Matrix exclusively utilizes the ECC 200 standard for bulletproof reliability:

›ECC 200 Error Correction: Employs sophisticated Reed-Solomon algebraic algorithms allowing the code to be 100% restored and decoded even if up to 30% to 60% of the symbol is scratched, torn, stained, or burned.
›L-Shaped Finder Pattern: The solid bottom and left border ("L" shape) provides the optical imager with orientation, skew angle, and physical size parameters.
›Alternating Clock Track: The top and right borders feature alternating light and dark modules that tell the decoder the exact grid density and column count.
›Direct Part Marking (DPM): Can be laser-etched, dot-peened, or chemically etched directly onto titanium, steel, silicon microchips, and surgical instruments.

🔬 Physical Barcode Anatomy & Zone Breakdown

Quiet Zone

A border of at least 1 module width of clear margin surrounding all four sides.

Finder Pattern (L-Border)

Solid dark lines on the bottom and left defining physical coordinates.

Clocking Pattern

Alternating cells on the top and right defining cell count.

Data & Reed-Solomon Regions

Matrix grid containing encoded ASCII characters and parity verification blocks.

🖨️ Production & Printing Best Practices

✔Maintain adequate cell contrast: ensure the module size is at least 3x to 4x the resolution of your camera or imager sensor for fast acquisition.
✔For pharmaceutical serialization under GS1, always include Application Identifiers (AI) such as (01) GTIN, (17) Expiry Date, (10) Batch/Lot, and (21) Serial Number.
✔Ensure a clean quiet zone of at least 1X module width on all 4 sides.

📷

Optical Scanner Compatibility: Requires a 2D camera area imager or smartphone camera sensor. Cannot be read by legacy single-line 1D laser scanners.

Frequently Asked Questions

What is the difference between Data Matrix and QR Code?

Data Matrix has a smaller footprint for tiny items and requires only a 1-module quiet zone, making it ideal for micro-parts and healthcare serialization. QR Codes have finder patterns in three corners and are more popular for consumer mobile camera scanning.