SKU & product data guides
Everything we've learned building a SKU tool, written down. No fluff, no gated PDFs — just the things that go wrong with product data and how to avoid them.
Start here
How to create SKU numbers
The complete method: structure, length, attribute codes, and the rules that prevent most SKU problems.
Tutorial · 10 minBuild a catalog in 10 minutes
Step by step through a real setup: pattern, attributes, variants, and a store-ready export.
Reference
SKU examples for 8 store types
Copyable patterns for clothing, jewelry, electronics, food, furniture, beauty, print-on-demand and wholesale.
Explainer · 5 minSKU vs UPC vs EAN vs GTIN
Who assigns each code, what they cost, when you legally need one, and how they work together.
By platform
SKU generator for Shopify
Generate variants and export a CSV that imports cleanly, with variants grouped the way the importer expects.
Shopify · TroubleshootingShopify CSV import errors
Every common error message, what it actually means, and the specific fix for each.
WooCommerceSKU generator for WooCommerce
Consistent SKUs and a CSV in the exact format the built-in importer expects.
ApparelSKU system for clothing brands
Handling the variant explosion when one style becomes dozens of size-colour combinations.
The tool behind the guides
A free SKU builder: define a pattern once, generate every variant, and export a clean CSV for Shopify, WooCommerce, or a spreadsheet.
Open the free SKU builderNo signup. Your catalog never leaves your browser.