GTIN / UPC / EAN barcode validator

Validate GTINs, UPCs, EANs, and ISBNs in bulk. Paste your whole list to catch bad check digits, wrong lengths, and duplicates before they block a listing, then copy back a clean, marketplace-ready set. It runs entirely in your browser, so your codes never leave it.

Codes

One code per line. Spaces and hyphens are ignored, and nothing leaves your browser.

Summary

Codes checked–

Valid–

Warnings–

Invalid–

Duplicates–

A correct check digit does not mean the code is registered to your brand. Amazon and Walmart also match every code against the GS1 database before they accept a listing.