Choose Symbology

Select the barcode type from the dropdown (Code 128 is the most versatile).

Enter Data

Follow the exact rules shown in the hint below. Check digit is added automatically where needed.

Generate & Download

Live preview updates instantly. Click PNG or SVG to download.

All generators

Symbology

Data

Code 128 accepts any printable ASCII characters.

Bar Width

Height (px)

Display human-readable text

Line Color

Background

Rotation: 0°

90° = vertical barcode (shelf strips).

PNG Export Size

Download Filename

Saved as your-name.png / your-name.svg.

Symbology constraints

Code 128 — Most versatile. Encodes the full ASCII set. Ideal for shipping labels, inventory and general use.

Code 39 — Limited character set (A–Z, 0–9, and a few symbols). Self-checking but lower density than Code 128.

EAN-13 / EAN-8 / UPC-A — Retail product codes. Require a precise number of digits; the final check digit is calculated automatically if omitted.

ITF — Interleaved 2 of 5. Digits only, even length. Commonly used for carton identification.

Enter valid data to generate

How to generate a barcode

Choose symbology

Code 128 for general use; EAN-13/UPC for retail products.

Enter valid data

The hint under the field shows the exact rules. Check digits are computed for you.

Download

SVG for print shops, PNG for documents and labels.

Formats at a glance

Code 128 — any ASCII characters; shipping, inventory, asset tags.
EAN-13 / EAN-8 / UPC-A — retail product codes (numbers issued by GS1).
Code 39 — legacy industrial; uppercase letters and digits.
ITF — digits only, even length; carton and warehouse labels.

Barcode FAQ

Which format do I need for a product I sell?

Retail products require a GS1-issued EAN-13 or UPC-A number — the barcode just encodes it. Generate the number first at gs1.org, then create the barcode here.

Why does it say "invalid check digit"?

Retail formats end with a calculated check digit. Either delete the last digit (we compute it) or use the digit we suggest in the error message.

What does the EAN-13 prefix mean?

The first 2–3 digits are a country/region code: 450–459 and 490–499 = Japan, 500–509 = UK, 690–699 = China, 890 = India, 0–13 = USA/Canada. The payload line below the preview shows yours when you type an EAN.

How wide will the printed barcode be?

Width in mm ≈ bar-width × 0.33 × module count. A Code 128 encoding 10 chars at width 2 comes out ≈ 45–50 mm — comfortably scannable. If it needs to fit a fixed space, lower bar width first, then height.

Is the output print-quality?

Yes — SVG is pure vector, so it prints crisply at any size, from tiny labels to pallet signage. For print, keep line color near-black and the background white or very light; colored bars scan poorly.