Barcode Generator

Generate barcodes in various formats: Code 128, EAN-13, EAN-8, UPC, Code 39, and more. Download as image.

This tool generates fictitious data intended exclusively for software testing and development purposes. The data does not correspond to real people or entities and must not be used for illegal, fraudulent purposes, or in ways that violate the privacy of others. Compliant with LGPD (Brazilian Data Protection Law).

See also:

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Fictitious Data in Testing
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About the Barcode Generator

What are barcodes?

Barcodes are machine-readable representations of data using patterns of parallel lines (1D barcodes) or geometric patterns (2D barcodes). They encode information such as product identifiers, serial numbers, URLs, or any text data. Common 1D formats include Code 128, Code 39, EAN-13, UPC-A, and ITF. Each format has specific rules for character sets, lengths, and check digits.

How does the generator work?

Enter your data and select the barcode format you need. The tool renders the barcode instantly in your browser using standard encoding rules for each format. Code 128 supports the full ASCII character set and is ideal for general-purpose encoding. EAN-13 and UPC-A are used for retail products. Code 39 is common in industrial and logistics applications. The generated barcode can be downloaded as an image.

Developer and testing use cases

Developers use barcode generators to create test data for inventory management systems, point-of-sale applications, warehouse management software, and shipping label printers. QA teams need sample barcodes to verify scanner integrations, validate parsing logic, and test edge cases like maximum-length data or special characters. Having an instant barcode generator eliminates the need for physical barcode printers during development.