Free Nifelo tools

Practical tools for better product data

Solve a specific product data problem immediately. Free, without an account, and built on the same knowledge Nifelo uses for complete catalogs.

Available tools

Start with the official Google product taxonomy. We add new checks only when they provide real value.

Search by product name, category or ID and copy the correct Google category path.

Check barcode numbers instantly for format and check digit.

Understand the fields and avoid common product feed mistakes.

Learn what a Google product category is and why it matters in Merchant Center.

A practical process for finding a Google category ID and using it safely in a feed.

Compare your own product type with Google’s fixed category and avoid incorrect feed mappings.

Understand GTIN, EAN and UPC without jargon.

Calculate and verify a GTIN check digit step by step.

Find the correct product identifier without guessing.