Carriers raise the bar for 2D Datamatrix barcode quality

More and more carriers, including PostNL, are emphasizing the quality of 2D Data Matrix barcodes on shipping labels. A clearly readable code is essential for reliable handling within the sorting process and helps prevent delays or delivery errors.

Why the print quality of the 2D Data Matrix is so important

The Data Matrix code contains crucial shipping information that is automatically read by sorting systems. Poor print quality or incorrect code size can lead to misreads or unrecognized shipments.
Therefore, the logistics sector applies stricter standards for the quality, module size, and quiet zone around the code.

Guidelines for 2D Data Matrix codes according to PostNL

According to the most recent technical specifications from PostNL, the 2D Data Matrix code must meet the following requirements:

• The print quality must comply with the ISO 15415 standard, with a minimum grade of 4.0 / A or 3.0 / B.
• The module size (the smallest squares in the code) must be at least 0.5 mm and no more than 0.7 mm.
• A module size of 0.5 mm is recommended; this corresponds to 6 dots at 300 dpi.
• If print quality is insufficient, the module size may be increased up to 0.7 mm to meet the ISO quality standard.
• A quiet zone (quiet zone) must be maintained around the barcode, with a minimum width of four times the module size.

These guidelines are derived from PostNL’s technical documentation and are intended to ensure consistent readability in automated sorting systems.
Source: PostNL presentation

How to check whether your label meets the requirements

With a barcode verifier, you can measure the quality of your 2D Data Matrix code according to the ISO/IEC 15415 standard.
This helps prevent rejections or delays when shipping through PostNL.
At AIS Scanology, we support organizations with
barcode verification solutions
and advice on optimal print settings for printers and labels.

Would you like to know if your labels meet the latest PostNL requirements?

Contact us for a free check or demonstration.