WooCommerce now has a built-in field for product identifiers, so adding a barcode to your store is quick. Here is exactly where it lives and how to do it right.
Adding a barcode to a single product
Edit the product, go to Product data > Inventory, and you’ll find the GTIN/UPC/EAN/ISBN field. Paste your genuine number there and update.
This identifier then feeds your product feeds and structured data, which marketplaces and Google Shopping read.
Bulk adding with CSV import
For a catalog, add a column for the global unique ID (GTIN) in your CSV and map it during WooCommerce’s product import.
This is far faster than editing products one by one and keeps your data consistent.
Keep one number per variation
Each variation (size, color) needs its own unique barcode. Assign them at the variation level, not just the parent product.
Never reuse a number across two products or variations, or feeds will flag duplicates.
Frequently Asked Questions
Where is the GTIN field in WooCommerce?
Product data > Inventory tab, in recent WooCommerce versions.
Can I import barcodes in bulk?
Yes, add a GTIN column to your product CSV and map it on import.
Do variations need separate barcodes?
Yes, each variation should have its own unique number.
Need genuine barcodes? Get ready-to-use UPC & EAN numbers with images at GoodUPC.