Generate compliant FNSKU barcodes and 2D Box Content Labels instantly. No login, no data storage — everything runs locally in your browser.
A high-speed workflow to ensure your shipment meets Amazon's 2026 FBA standards.
Answer 3 quick questions to confirm if you need an FNSKU or manufacturer barcode.
Run Finder →Generate compliant FNSKU barcodes or 2D Box Content labels instantly.
Generate Amazon FNSKU BarcodePrint at 100% scale on thermal or A4 — the settings that pass intake first time.
Read the Print Guide →Choosing the wrong barcode leads to rejected shipments and manual processing fees. Answer 3 questions to identify your specific requirements for 2026.
Marketplace rules differ by region.
Determines if you use manufacturer barcodes.
Expiry dates, Grocery, Beauty, or Baby.
Generate Amazon-ready barcodes instantly in your browser. No data stored. No signup.
Need bulk labels? Use our Batch CSV Generator to create hundreds at once.
Not sure which type to use? Read our FNSKU vs UPC vs EAN guide.
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Validated for Amazon Standards
Build a scanner-safe PDF417 box label. Runs locally in your browser. No data stored.
📖 Not sure what a 2D box label is? Read our FBA Label Size Guide.
No commas. Keep it clean and simple.
FBA Compliance: PDF417 | 2D Content
freebarcodetools FBA was created by a UK-based team of Amazon FBA practitioners who got tired of overpriced label software that uploads your product data to third-party servers. Every tool on this site runs entirely in your browser — your SKUs, shipment IDs, and barcode data never leave your device.
We built these tools because we needed them ourselves. When you're prepping hundreds of units for FBA, the last thing you want is a slow web app that requires a login, stores your data, and charges per label. So we made it free, fast, and private.
Last updated June 2026 · freebarcodetools FBA team · Get in touch
Everything Amazon FBA sellers ask about barcodes, labels, and compliance.
FNSKU stands for Fulfilment Network Stock Keeping Unit. It's an Amazon-assigned barcode that ties a product to your seller account. You need one if you're sending items via FBA and Amazon requires individual item labelling — which applies to most sellers unless you have a manufacturer barcode exemption. Without it, Amazon can't route your inventory to the correct bin.
Yes, completely free. No account to create, no credit card, no usage limits. The tools run entirely in your browser — we don't process your data on any server. Everything happens on your own device.
UPC and EAN are global product barcodes — they identify a product universally. An FNSKU is Amazon-specific and links inventory to your seller account, letting Amazon track your stock separately from other sellers of the same product. See our FNSKU vs UPC vs EAN guide for a full breakdown with decision flow.
A 2D box content label (PDF417 barcode) tells Amazon what's inside a carton before they open it. Since 2024, Amazon increasingly requires these on inbound FBA shipments. Without it, boxes may be opened manually, delaying processing and risking rejection fees. Our 2D Box Content Builder generates them for free.
The most common causes: labels printed at the wrong scale (always use Actual Size / 100%), DPI too low (use 300 DPI minimum), manufacturer barcodes not covered, labels placed over seams, or a missing 2D box content label. Read our full guide: Why Amazon FBA Shipments Get Rejected.
Tools, walkthroughs, and references to keep your shipments accepted first time.
Convert Amazon A4 PDFs to 4×6 thermal labels for Zebra and Rollo printers.
Generate hundreds of barcodes at once from a CSV file. Perfect for prep centres.
Which barcode do you actually need? Clear comparison and decision guide.
Fix print quality, scale, and DPI issues. Avoid Amazon rejection.
Exact dimensions, margins, and quiet zone rules for every Amazon label type.
Understand why Amazon rejects shipments and how to fix every common error.