Barcode Generator

This barcode generator creates scannable 1D barcodes in nine industry-standard formats, from retail product codes like EAN-13 and UPC-A to general-purpose Code 128 and Code 39. Type your value and the barcode previews instantly — no generate button to press.

Every barcode is fully customizable. Adjust bar width, height, and colors, show or hide the text label, change its font size and position, and control the quiet-zone margin. Apply a quick preset or fine-tune each setting, then download a high-resolution PNG or a scalable SVG, or copy the image straight to your clipboard.

Private by design: every barcode is rendered entirely in your browser. Your product codes, inventory numbers, and other input are never uploaded to a server, and the tool keeps working offline once the page has loaded.

How to Use the Barcode Generator

Select a barcode type

Pick a format from the Barcode Type dropdown. Each type shows a format hint explaining the accepted characters and length. The default is Code 128, which supports all ASCII characters and suits most general use.

Enter your value

Type your data in the Value field. The preview updates automatically as you type. For EAN-13, UPC-A, EAN-8, and ITF-14 you can enter the data digits only and the check digit is calculated for you, or paste the full code.

Customize the appearance

Open Customize Barcode to apply a preset (Standard, Compact, Large, Blue, Green, or Red) or set the line and background colors, bar width (1–4), height (40–200), text label, font size, text position, and margin yourself.

Download or copy

Choose PNG (with a 1×–4× scale for higher resolution) or SVG for print, then download. You can also copy the barcode as a PNG image straight to your clipboard for pasting into documents or design tools.

Features

9 Barcode Formats

Generate Code 128, EAN-13, UPC-A, EAN-8, Code 39, ITF-14, Codabar, MSI, and Pharmacode, each using the correct encoding standard.

Real-Time Preview

The SVG preview refreshes as you type or change a setting — there is no generate button, just a smooth 200ms debounce.

Automatic Check Digit

For EAN-13, UPC-A, EAN-8, and ITF-14, enter just the data digits and the check digit is calculated automatically — or enter the full code.

Full Customization

Set custom line and background colors, bar width, height, font size, text position, and margin, or apply one of six ready-made presets.

PNG and SVG Export

Download a PNG at 1× to 4× scale for sharper output, or an SVG that scales to any size for print without losing quality.

Copy to Clipboard

Copy the barcode as a PNG image to your clipboard with one click for quick pasting into documents, slides, or design tools.

Input Validation

Each type enforces its own rules and shows a format hint, so invalid input is flagged before you ever export a broken barcode.

Browser-Based Processing

All generation runs locally in your browser, so sensitive product codes and inventory numbers never leave your device.

Frequently Asked Questions

How do I create a barcode online for free?

Pick a barcode type, type your value in the Value field, and the barcode appears instantly. There is nothing to install or sign up for — open the page, enter your data, and download a PNG or SVG.

What barcode types are supported?

Nine formats: EAN-13 for international retail, UPC-A for North American retail, Code 128 for general labeling and shipping, Code 39 for industrial and military use, ITF-14 for shipping cartons, EAN-8 for small packages, Codabar for libraries and healthcare, MSI for internal inventory, and Pharmacode for pharmaceutical packaging.

How do I generate a barcode from a number?

Choose a numeric type such as EAN-13, UPC-A, ITF-14, or MSI and type the digits into the Value field. For EAN-13, UPC-A, EAN-8, and ITF-14 you can leave off the final check digit and it will be calculated automatically.

What is a check digit?

A check digit is an extra digit appended to the data to help scanners detect errors. For EAN-13, UPC-A, EAN-8, and ITF-14 it follows a standard formula. Enter only the data digits and this tool computes the check digit for you.

Can I download the barcode as PNG or SVG?

Yes. PNG is best for screens, websites, and documents — use the 2× or higher scale for crisp output. SVG is a vector format that scales to any size without losing quality, making it ideal for labels, packaging, and signage. You can also copy the barcode as a PNG to your clipboard.

What is the difference between a barcode and a QR code?

A barcode is a 1D symbol made of parallel lines that encodes a short value such as a product or inventory number. A QR code is a 2D matrix that stores far more data, including URLs and text. This tool creates 1D barcodes; for QR codes, use a dedicated QR generator.

What colors work best for reliable scanning?

Keep high contrast between the bars and background — dark bars on a light background scan most reliably, with black on white the safest choice. Avoid red or orange bars (many scanners use red light) and avoid very dark backgrounds.

Can I use these barcodes commercially?

The barcodes are standard-compliant and fine for commercial use. For retail codes like EAN-13 and UPC-A, you still need a valid GS1 company prefix and product numbers from your local GS1 organization so your codes are globally unique.

Is my data safe?

Yes. All processing happens in your browser and nothing is transmitted to any server. Your product codes, inventory numbers, and other input stay on your device.