Barcode Generator

About the Barcode Generator

Generates a barcode (Code128, EAN-13, UPC and more) from your input, rendered in your browser as an SVG you can save or print.

How to use

Enter the data, pick a barcode format, then click Generate.

Worked example

Entering 5901234123457 as EAN-13 renders a standard retail barcode.

How to use this calculator

1. Choose the barcode type you need, such as Code 128 or EAN.
2. Enter the data you want to encode.
3. Generate the barcode and check the preview.
4. Download or copy the result for use in labels, packaging, or documents.

The formula explained

• \(\text{barcode}\) = the generated barcode image or encoded pattern
• \(\text{input data}\) = the text or numbers you want to encode
• \(\text{symbology}\) = the barcode type, such as Code 128 or EAN

Step by step method

1. Select a barcode standard that matches your use case.
2. Type the exact characters or digits you want encoded.
3. Let the tool convert the input into the correct barcode pattern.
4. Review the barcode and save it in the format you need.

Worked example

Suppose you want to make a Code 128 barcode for a simple product code.

1. Choose Code 128 as the barcode type.
2. Enter the product code \(A12345\).
3. Generate the barcode and confirm that the preview matches the input exactly.

Tips and common mistakes

• Make sure the input matches the barcode type, since some formats accept only numbers while others accept letters and symbols.
• Check for extra spaces, since even a hidden space changes the barcode content.
• Use the correct barcode standard for your application, especially for retail or inventory systems.
• After generating the barcode, test it with a scanner if you will use it in a real workflow.

Frequently asked questions