Tools
The one-item-one-code toolbox
No sign-up required. All computation runs locally in your browser — nothing is uploaded.
GTIN-13 Check Digit Calculator
Enter the first 12 digits to compute the 13th check digit (GS1 Mod 10).
GS1 AI Application Identifier Parser
Paste a GS1 element string like (01)06901234500017(21)ABC123 to break it into Application Identifiers.
GS1 Digital Link Builder
Enter a GTIN (required) plus optional serial/batch to build a GS1 Digital Link URL.
Batch Anti-Fake Code Generator
Custom prefix, length and quantity — generate unique random codes ready to copy.