Bulk barcode generator from CSV — PNG ZIP in the browser

Bulk specialists dominate SERPs for “barcode generator bulk”, but many upload your spreadsheet. LocalBarcode keeps rows in tab memory and packs PNGs with vendored JSZip.

CSV shape

• One value per line, or a single column.
• Optional header: if the first cell looks like value, code, sku, ean, or barcode, it is skipped.
• Empty rows are ignored; invalid EAN checksums are listed in the status area and skipped.

Steps

1. Choose Code128 or EAN on the tool.
2. Paste CSV text or choose a .csv file (read locally).
3. Generate — each valid row becomes a PNG named from a safe slug of the value.
4. Download the ZIP. Prove privacy in DevTools → Network: no CSV upload.

Soft limits

Very large CSVs are memory-bound (phone browsers especially). Start with a few hundred rows; split bigger jobs. Label-sheet PDF layout is intentionally out of v1.

Related: Code128 vs EAN · GS1 disclaimer explained