Paste a list of codes and generate printable barcodes in bulk — perfect for Amazon FBA FNSKU labels. No sign-up, no watermark. ▏▌
Many codes at once • Printable
Code 128 is the format Amazon uses for FNSKU labels — generate a whole batch in one click.
All barcodes render on one page, ready to print onto label sheets.
Generated in your browser. No sign-up, no watermark, no limit.
Amazon FBA sellers must label inventory with FNSKU barcodes, which use the Code 128 standard. Instead of generating them one at a time or paying for software, paste your full list of FNSKUs or SKUs here and create every barcode at once — then print them straight onto your label sheets. The tool also supports UPC-A and EAN-13 for retail products and Code 39 for asset tags.
Everything is produced in your browser with no account, no email and no per-code fee, so it scales from a handful of items to a whole shipment for free.
Barcode formats are not interchangeable, and picking the wrong one is the usual reason a batch fails at the scanner. UPC-A and EAN-13 encode fixed-length numeric product codes for retail and require a registered prefix to be globally unique. Code 128 accepts arbitrary alphanumeric data and is the general-purpose choice for internal labelling. Code 39 is older and less dense but still common in industrial settings.
Retail symbologies protect themselves with a check digit computed from the preceding digits — for UPC-A, the odd positions are tripled, the rest added, and the final digit is whatever brings the total to a multiple of ten. For 03600029145 that sum is 58, forcing a check digit of 2. A misread therefore fails arithmetic instead of silently scanning as a different product.
For a bulk run, two physical properties decide success. The quiet zone on each side must be preserved — trimming labels too close is the most common cause of unreadable codes — and the narrow-bar width must suit the printer's resolution, since a 203 dpi thermal printer cannot faithfully render a bar narrower than its dot pitch.