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Barcode Generator

Generate CODE128, EAN-13, EAN-8, UPC-A, and CODE39 barcodes. Download as SVG.

Barcode Content

Format

Bar Width 2

Height 100

Show Text Display text below barcode

Enter content above to generate a barcode

About Barcode Generator

Security-sensitive operations should never require uploading your data to a third-party server. Barcode Generator runs entirely in your browser, letting you generate code128, ean-13, ean-8, upc-a, and code39 barcodes. download as svg with complete confidence that your information stays private. No server calls, no logging, no data retention.

How to Use

Enter your data Paste or type your sensitive data into the input field. Remember: nothing leaves your browser.

Configure options Select the algorithm, encoding format, key size, or other parameters as needed.

Process Click the action button to encrypt, hash, encode, or perform the security operation.

Copy the output Copy the result securely. For sensitive outputs, make sure to store them in a safe location.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Barcode Generator?

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True Client-Side Security All cryptographic operations run in your browser using the Web Crypto API. Your sensitive data — passwords, keys, encrypted messages — never touches any server.

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Industry-Standard Algorithms Barcode Generator uses the same cryptographic algorithms trusted by banks, governments, and security professionals worldwide. No homebrew crypto.

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Open & Transparent View the source code right in your browser (Ctrl+U). Verify exactly what the tool does with your data — no hidden behavior, no tracking.

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No Registration Required Security tools should be accessible without creating accounts or sharing personal information. Use Barcode Generator immediately — no sign-up, no email, no strings attached.

Frequently Asked Questions

CODE128 is the most versatile — it supports all ASCII characters and automatically selects the most efficient encoding. EAN-13 is used on retail products worldwide. UPC-A is the North American retail standard (12 digits). CODE39 is older, widely supported, and good for alphanumeric codes in industrial settings.

EAN-13 is a fixed-length format where the last digit is a checksum calculated from the first 12. All 13 digits must be provided together. EAN-8 works similarly with 8 digits, and UPC-A uses 12 digits. These fixed lengths allow scanners to validate the barcode instantly.

The barcode image itself is free to use. However, for retail products you need a licensed barcode number from GS1. The barcode format (EAN, UPC) is open, but the specific numbers are assigned by GS1 to ensure global uniqueness.