Micro QR Code Generator API
Compact QR code for limited space applications
Micro QR Code is a reduced-size variant of the QR Code standard within ISO/IEC 18004, using a single finder pattern in one corner instead of three, which shrinks the minimum symbol size considerably. It trades maximum capacity, up to 35 numeric digits or 21 alphanumeric characters in its largest version, for a footprint small enough to fit on printed circuit boards, tools, and other items where a full QR Code will not physically fit.
Request a Micro QR Code from the BarGen API with a short data string and it returns an SVG or PNG sized to the smallest version that fits the payload, ready for direct part marking or small label printing.
Micro QR Code is a smaller version of the standard QR Code, designed for applications where space is extremely limited. Developed by Denso Wave in 2004, it maintains the core benefits of QR codes while using less space.
Unlike standard QR codes which have three finder patterns, Micro QR has only one, significantly reducing the required area. It comes in four versions (M1-M4) with capacities ranging from 5 numeric digits to 35 alphanumeric characters.
The format is ideal for small electronic components, tiny product labels, and applications where a full QR code would be too large. It uses the same Reed-Solomon error correction as standard QR codes.
Micro QR is commonly used in electronics manufacturing, small pharmaceutical labels, and any application requiring machine-readable data in extremely limited space.
Common use cases
PCB and component identification
Electronics manufacturers mark individual boards or components with Micro QR Codes where a standard QR Code footprint is too large.
Tool and asset tagging
Small hand tools and lab equipment carry Micro QR Codes linking to maintenance or calibration records.
Jewelry and small-item retail tags
Retailers use Micro QR Codes on small product tags where space does not permit a full-size 2D symbol.
Frequently asked questions
How much data can Micro QR Code hold?
The largest Micro QR version, M4, holds up to 35 numeric digits or 21 alphanumeric characters, considerably less than standard QR Code but enough for IDs, serial numbers, and short URLs.
Can any QR scanner read a Micro QR Code?
Most modern QR readers recognize Micro QR automatically since it shares the same ISO/IEC 18004 standard, though some older fixed-configuration scanners may need Micro QR support enabled explicitly.
When should I use Micro QR instead of standard QR Code?
Choose Micro QR when the payload is short, under about 20 characters, and the print area is too small for a standard QR Code with its wider quiet zone requirement.
Specifications
- Capacity
- Up to 35 alphanumeric or 21 bytes
- Versions
- M1 (11×11) to M4 (17×17)
- Error Correction
- L, M, Q (version dependent)
Availability
This format is on our roadmap and not yet available via the API.
Related formats
Start generating Micro QR barcodes
Free tier with 1,000 API calls per month. No credit card required.