Generate a Code 128 Barcode Online Free

Warehouses and shipping desks still rely on linear barcodes. Code 128 generates Code 128 barcodes from alphanumeric text in your browser — free, private, no signup, and no upload.

Use it when scanners expect a classic 1D barcode rather than a QR square. For retail GTIN-style numbers, see EAN-13 instead.

When to use

• Inventory SKUs and bin labels that include letters and digits
• Internal shipping or tote IDs
• Asset tags that handheld scanners already read as Code 128
• Quick prototypes before buying a label printer workflow

Step-by-step

1. Open Code 128.
2. Enter the alphanumeric string exactly as scanners should read it.
3. Generate the barcode and preview quiet zones (clear space around the bars).
4. Download the image for labels or documents.
5. Verify with Scan Code or Scan from Image before printing a batch.

Keep strings as short as practical. Longer payloads produce wider barcodes that need more label width.

Code 128 vs EAN-13 vs QR

Privacy

Code 128 generation runs on-device. Your data and barcode image never leave the browser for this workflow — no upload, free, no account.

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FAQ

Is Code 128 the same as Code 39?

No. Both are linear barcodes, but character sets and encoding differ. Use Code 128 when your scanner workflow expects it.

Can I encode a full URL?

You can put text in Code 128, but long URLs make very wide barcodes. Prefer a Website QR for links.

Will phone cameras read it?

Many phones can decode Code 128 via camera apps or Scan Code, but dedicated laser scanners are still common in warehouses.

Do I need an account?

No.