Summary

The Data Matrix encoder currently supports standard square and rectangular symbol sizes per ISO/IEC 16022, but is missing DMRE (Data Matrix Rectangular Extension) sizes defined in ISO/IEC 21471:2020 amendment.

Details

DMRE adds additional rectangular symbol sizes that are important for healthcare, logistics, and electronics labeling where space is severely constrained:

Additional DMRE sizes include:

• 8×48, 8×64, 8×80, 8×96, 8×120, 8×144
• 12×64, 12×88
• 16×64
• 20×36, 20×44, 20×64
• 22×48
• 24×48, 24×64
• 26×40, 26×48, 26×64
• And more...

These sizes are increasingly required in:

• Healthcare: GS1 DataMatrix on small pharmaceutical packages
• Electronics: PCB component labeling
• Logistics: Small item identification

Current state

The src/encoders/datamatrix/tables.ts likely contains only the original ISO 16022 symbol sizes.

References

• ISO/IEC 21471:2020 (DMRE amendment to ISO 16022)
• GS1 DataMatrix guideline