13 or 14 digits.
Enter content to see the preview here.
Usage and example
Create ITF-14 barcodes from 13 or 14 digits for free. Encode identifiers such as packaging-unit codes, adjust bar width, height and number display, and save as PNG or SVG.
Example: 12345678901231
Barcode types, how they work and how to choose · Scan the saved image to check its content