Bulk barcode generator for Amazon sellers

Amazon FBA and private-label sellers routinely need dozens or hundreds of identical-looking labels that differ only by SKU, FNSKU, or UPC. Copy-pasting into a desktop app for each ASIN wastes time and invites transposition errors—especially before inbound shipments or relabeling runs.

A bulk barcode generator that reads Excel, validates symbology, and exports one image per row keeps your listing data aligned with what scanners see at the warehouse.

Which barcode type for Amazon?

• UPC / EAN-13: retail product identification—check digit must be valid; use the symbology Amazon expects for your marketplace.
• FNSKU (often Code 128): Amazon fulfillment network labels tied to your seller SKU—encode the exact string from Seller Central, including prefix letters.
• Code 128: common for internal carton marks and some 1D logistics strings with variable length.
• QR codes: useful for inserts, warranty pages, or review requests—not a replacement for FBA carton 1D requirements.

Spreadsheet workflow

Export your SKU list from inventory software or Seller Central reports. One column per encoded value; a second column for human-readable title or ASIN (label text only, not encoded in the bars unless required). Import via Excel on the bulk barcode page, map the content column, set module width and height for your label template (e.g. 50×30 mm), and generate a ZIP.

Print tests: scan with the same handheld used in your prep center; verify quiet zone (blank margin) on left and right. Thermal printers need darker bars—avoid light gray “branded” bar colors for FNSKU strips.

Compliance reminders

Amazon’s label requirements change by category and fulfillment type. This article is operational guidance, not legal advice—always confirm current Seller Central documentation for your marketplace. Never reuse another brand’s UPC. Keep GS1 ownership records if you buy codes for new private-label products.

Pair with QR for marketing

Many sellers add a small QR on the insert card (warranty, instructions, subscribe-and-save landing). Generate those URLs in the same spreadsheet as a second column and run them through the bulk QR generator so filenames match your FNSKU rows.