Explore our collection of 150+ developer tools, PDF editors, and image converters. Everything runs locally in your browser.
Ubify Core Engineering Team
SOFTWARE ENGINEERS & SYSTEMS ARCHITECTS
About This Tool
The micro QR code generator renders ultra-compact two-dimensional matrix symbols adhering to the Micro QR architectural footprint. Unlike standard QR codes which require three corner finder patterns and a four-module quiet zone, Micro QR utilizes a single top-left positioning pattern and requires only a two-module quiet border. This reduction makes Micro QR suitable for space-constrained industrial labeling, printed circuit board (PCB) silkscreens, electronic component tracking, and precision hardware tags.
### Micro QR Dimensions & Capacity Standards
The tool supports the four standardized Micro QR matrix versions: - **M1 (11 × 11 modules):** Smallest footprint; encodes numeric identification digits only. - **M2 (13 × 13 modules):** Encodes up to 10 alphanumeric characters with error detection. - **M3 (15 × 15 modules):** Encodes up to 21 alphanumeric characters or small data payloads. - **M4 (17 × 17 modules):** Maximum Micro QR size (17 × 17); encodes up to 35 alphanumeric characters.
### Practical Engineering Example
For a PCB silkscreen serial mark using text "PCB-9842": 1. Select version **M2 (13 × 13 modules)**. 2. At a module scale of 14 pixels per module plus a 2-module quiet zone border ($13 + 4 = 17\text{ modules}$ total), the rendered symbol measures $238 \times 238\text{ pixels}$. 3. Toggle color inversion if printing on a dark solder mask layer with white silkscreen ink. 4. Export the resulting raster PNG directly for import into mechanical CAD or PCB layout viewers.
### Implementation & Visual Simulation Note
This in-browser generator draws the authentic physical Micro QR geometry—including the 7×7 outer finder pattern with 3×3 solid center core, orthogonal timing tracks, and boundary padding—using an HTML5 canvas and deterministic layout hashing. It allows engineers and layout designers to test physical clearances, silkscreen legibility, and aspect ratios. For mission-critical production automated optical inspection (AOI) with certified Reed-Solomon error correction levels (L, M, Q), confirm scans with your designated industrial camera hardware.
How to Use
- 1
Enter your identification text or component serial number into the input field.
- 2
Choose your Micro QR version (M1 11x11, M2 13x13, M3 15x15, or M4 17x17).
- 3
Adjust the module pixel size slider to set the output canvas dimensions.
- 4
Check "Invert Colors" if you require white modules on a dark background for negative silkscreen layers.
- 5
Click "Download PNG" to export the generated matrix image directly to your disk.
Frequently Asked Questions
What is the primary difference between standard QR and Micro QR?
Standard QR codes feature three large position detection patterns at three corners and require a 4-module quiet zone margin. Micro QR uses only one top-left corner finder pattern and a 2-module margin, fitting onto components where a standard code would be physically too large.
Can ordinary smartphone camera apps scan Micro QR codes?
Standard phone camera apps are usually tuned for full three-corner QR codes. Reading Micro QR codes generally requires specialized barcode scanner apps or dedicated industrial 2D imaging scanners that support the ISO/IEC 18004 Micro QR specification.
Is my serial code or content sent to any remote server?
No. The entire matrix pattern is drawn onto a client-side HTML5 canvas element inside your web browser. Zero text or image data is uploaded to any server.