How to use
Step 1
Product listing barcode
GS1-registered UPC or EAN-13 required (or GTIN exemption). Amazon verifies against GS1 database.
Step 2
FNSKU unit label
Required on every physical unit. Assigned by Amazon, generated as CODE128. Free to generate here.
Step 3
Shipping box label
4×6 inch label on every shipping box. Includes shipment ID and box contents.
Amazon Barcode Requirements
FORMAT: CODE128 — required for all FNSKU labels
Minimum size: 1 in × 2 in (25mm × 50mm)
300 DPI minimum — SVG perfect at any size
White background — no patterns behind barcode
Human-readable text visible below barcode
FNSKU must fully cover any existing manufacturer barcode
One label per individual sellable unit
GS1-registered barcode or GTIN exemption for listing
⚠️Do not buy barcodes from resellers. Sites selling "10 barcodes for $5" provide codes registered to other companies. Amazon checks against the GS1 database — your listing can be suspended. Register directly at gs1.org.
Amazon FBA Label Size Guide
| Label Type | Minimum Size | Format | Notes |
|---|---|---|---|
| FNSKU Unit Label | 1 in × 2 in (25×50mm) | CODE128 | One per sellable unit |
| Shipping Box Label | 4 in × 6 in (100×150mm) | Seller Central | One per shipping box |
| Suffocation Warning | 1 in × 1 in (25×25mm) | Text | Poly bags >5 inch |
| Expiry Date | 1 in × 2 in (25×50mm) | Text | Food, health, cosmetics |
| Set / Bundle | 1 in × 2 in (25×50mm) | Text + barcode | "Sold as set" |
✅ Pro tip: Always download SVG for thermal printers (Zebra, Rollo, Dymo) — perfect quality at any size.
FAQ
What barcodes does Amazon require in 2026?
(1) GS1-registered UPC or EAN-13 for the listing, or GTIN exemption. (2) FNSKU label in CODE128 on every physical FBA unit.
Has Amazon changed barcode requirements recently?
Amazon tightened GTIN verification in 2023–2024. FNSKU label requirements are unchanged.
What is a GTIN exemption?
For private label products without an existing barcode. Apply in Seller Central: Catalog → Add a Product → request exemption.
Do I need a new barcode for each variation?
Yes. Each unique ASIN (size, color, style) needs its own UPC/EAN and FNSKU.
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