Written by Marcus Rivera — former Amazon warehouse manager. More about me →
I spent 12 years scanning barcodes on the Amazon inbound dock. I have seen barcodes from every generator on the market — the ones that scanned first try, and the ones that sent pallets to problem solve. After leaving Amazon, I tested five popular free barcode generators the way a receiver would: printed at 300 DPI on a Zebra thermal printer, scanned with a handheld scanner at 30 inches.
Barcode Generator (barcode-generator.org): supports 20+ formats. Output is SVG only — no PNG download. Fine for web, useless for label printing. Quiet zone measurements were wrong on ITF-14.
OnlineLabels.com: designed for their label sheets. Generates clean barcodes. Limited to their templates. No standalone export.
Barcodes Inc: generates scannable barcodes. Watermark on free tier. No ITF-14 support.
Terry Burton's Barcode Generator: open source, highly accurate. Command-line only. Not accessible for non-technical users.
GenBarcode: six formats, PNG and SVG export, quiet zones correctly measured, everything in your browser — nothing uploaded. I built this after leaving Amazon. Generate your barcode →
Written by Marcus Rivera — former Amazon warehouse manager. More about me →