Where to Buy Barcodes for Your Shopify Store (Step-by-Step)

Shopify's own product editor has a barcode field, but Shopify doesn't sell barcodes — it just stores whatever number you enter. If you're staring at that empty field wondering where the number is supposed to come from, here's the straight answer.

Does Shopify Require a Barcode?

No. Shopify's barcode field is optional for most stores selling only through your own online store. It becomes important once you want to: sell on a marketplace that requires one (Amazon, Walmart), sync inventory with a POS system, or sell wholesale to retailers who scan products at receiving.

Where the Barcode Actually Comes From

The barcode field in Shopify's product editor is just storage — it does not generate or validate a real UPC/EAN for you. To fill it correctly, you need a GS1-registered barcode number purchased separately, then typed or pasted into that field per product variant.

Step-by-Step: Adding a Real Barcode to a Shopify Product

• Buy a GS1-certified UPC or EAN barcode for each unique product variant.
• In Shopify admin, go to Products, open the product, and scroll to the Inventory section.
• Paste the barcode number into the "Barcode (ISBN, UPC, GTIN, etc.)" field.
• Repeat for every variant — Shopify treats each size/color combination as a separate line needing its own code.
• Save, then verify the number displays correctly by checking the product page's inventory tab.

Do You Need Barcodes If You're Only Selling on Shopify's Own Storefront?

Not strictly — if you're never listing on Amazon, Walmart, or a retail POS system, you can leave the field blank with no functional downside for your own storefront. Where it matters is the moment you expand beyond your own site: barcode requirements tend to appear the first time you try to sell somewhere else, and having them set up in advance avoids a scramble later.

Frequently Asked Questions

Can I use the same barcode across Shopify and Amazon for the same product?

Yes. A GS1-registered barcode is a global identifier — the same number works across Shopify, Amazon, Walmart, and any retailer, as long as it's the identical product.

Does Shopify POS require barcodes?

Shopify POS can generate its own internal SKU-based barcodes for in-store scanning, but if you also sell the same product on a marketplace requiring a real UPC/EAN, you'll want the official code entered too.

What happens if I leave the barcode field blank?

Nothing breaks on your own Shopify storefront — customers can still buy normally. The field only matters for marketplace sync, POS scanning, or wholesale.

How many barcodes do I need for one product with multiple variants?

One barcode per variant — a shirt in 3 sizes and 2 colors is 6 unique combinations, each needing its own code.

Ready to get your barcode? Buy GS1-certified barcodes here →