Seller utility
Batch barcode generator
One SKU per line, optionally with a name and price. Pick a symbology and label size, preview and validate each entry, then export a PDF or print — entirely in your browser.
Paste codes on the left — every line renders below with a validity check.
Which symbology when
| Symbology | Characters | Typical use |
|---|---|---|
| CODE128 | Letters, digits, symbols | Your own SKUs, inventory, logistics |
| EAN-13 | 13 digits (check digit auto) | Retail checkout outside North America |
| UPC-A | 12 digits (check digit auto) | US/Canada retail checkout |
| CODE39 | A–Z, 0–9, - . $ / + % space | Older internal systems |
| ITF-14 | 14 digits | Shipping cartons, outer cases |
EAN/UPC retail codes are issued through GS1 member organisations — generate them only for prefixes you actually own. Internal SKU barcodes (CODE128) need no registration.
Print guidance
Print at 100% scale (“actual size”) — shrinking narrows the bars and breaks scanners. Keep label width at or above ~40 mm where possible, leave blank quiet zones on both sides of the bars, and use medium-high print density on thermal label stock.
Frequently asked
Which symbology for internal SKUs?
Use CODE128 for your own SKU scheme — it encodes letters, digits and common symbols at high density. EAN-13 and UPC-A are retail checkout codes that require a GS1 company prefix; don't mix them with internal SKUs.
Do I enter 12 or 13 digits for EAN-13?
Enter 12 digits and the tool computes the 13th check digit for you; entering all 13 also works and the last digit is validated. UPC-A works the same way with 11 or 12 digits. Invalid rows are flagged and skipped.
The printed barcode won't scan — why?
The three usual causes: not enough quiet zone (blank margin) around the bars, print density set too low, or bars squeezed too thin on a small label. Keep labels at least ~40 mm wide, raise print density and export at 100% scale.
How many codes per batch?
Up to roughly 500 per batch stays snappy since every code renders in your browser; larger lists work but previews get slower — split them up. The PDF export itself has no hard cap.
Can labels show the product name and price?
Yes. Write each line as "SKU,name,price" (name and price optional). The label lays them out automatically; currency symbols are printed as-is and not validated.
Further reading
No time to warehouse it, ship it straight out: what the hot search means for cross-border parcels · 12-Pk 14.5-Oz Del Monte Fresh Cut Blue Lake Green Beans $10.45 w/ S&S