Free tools

Practical tools for sellers and store developers: barcode checks backed by our product catalog, structured data and product feed validation. All free, no signup.

Barcode lookup

Check which product hides behind an EAN/GTIN and compare its prices.

Barcode validator

GS1 checksum (EAN-8, UPC-A, EAN-13, GTIN-14) with a step-by-step calculation.

Schema.org validator (JSON-LD)

Paste your Product JSON-LD and see which fields Google needs are missing.

Product feed validator

Google Merchant XML, JSON and CSV — structure, required fields, column consistency.

Product data extractor

See what product data (JSON-LD, OpenGraph, microdata) your page exposes to crawlers.

Price history

Find a product by barcode or ID and jump to its price history.

Selling online? Publish your price list for free and let AI agents find your offers: Agent Commerce API