Aztec Code Generator

Where Aztec Code is used

Aztec Code (ISO/IEC 24778) was invented in the mid-1990s and is now used on rail tickets in many European countries under the UIC 918.3 specification, on mobile airline boarding passes, event and transport tickets and some vehicle registration documents. It is royalty-free.

Structure and capacity

• A central bullseye finder of concentric squares, plus orientation marks around it, lets the reader find and rotate the code without a border.
• No quiet zone is required, so the code can sit close to other print, although a small margin still helps.
• Compact symbols range from 15×15 to 27×27 modules (1 to 4 layers); full-range symbols run from 19×19 up to 151×151 modules (32 layers).
• Error correction is adjustable from about 5% to 95%; around 23% is a common default.
• Maximum capacity is about 3,067 alphanumeric characters or 1,914 bytes.

Printing and screen tips

For paper tickets, a module size of 0.3 to 0.5 mm is a practical range; for phone screens, display the code large with maximum brightness and avoid scaling by fractional pixels. Increase error correction if tickets may be folded or screens cracked. Use dark modules on a light background; inverted codes are not read by every scanner. Verify printed symbols with ISO/IEC 15415 for high-volume ticketing.

How to make it

1. Select Aztec Code in the barcode generator.
2. Enter the ticket number, URL or text payload.
3. Choose an error correction level and, if needed, a fixed layer count.
4. Export SVG for print layouts or PNG for screens; batch-generate tickets from CSV.
5. Test-scan from paper and from a phone screen.

Frequently asked questions