liminfoBarcode Generator
Free web tool: Barcode Generator
About Barcode Generator
The Barcode Generator creates professional barcodes in six standard formats using the JsBarcode library, all running entirely in your browser. Enter any text or number, choose your format, click Generate, and immediately see a rendered SVG barcode. When you are satisfied with the result, download it as a high-quality PNG image with a single click — ready to use in labels, packaging, inventory systems, or print materials.
Six barcode formats cover the most common use cases in retail, logistics, and publishing. CODE128 handles any ASCII text and is widely used in shipping and warehousing. EAN-13 and EAN-8 are the international standards for product barcodes on consumer goods. UPC-A is the North American standard used on retail products. CODE39 is popular in industrial and military applications for its simple structure. ITF-14 is used for carton-level logistics and distribution.
The PNG download process uses an invisible canvas element to convert the SVG barcode into a raster image at native resolution. This ensures crisp, print-ready output at any scale. Because all processing occurs client-side with JavaScript, your barcode data — which may include sensitive product codes or internal identifiers — is never transmitted to any external server or stored anywhere.
Key Features
- Supports 6 barcode formats: CODE128, EAN-13, EAN-8, UPC-A, CODE39, and ITF-14
- Renders barcodes as SVG using the JsBarcode library for clean, scalable output
- One-click PNG download using canvas-based SVG-to-raster conversion
- Format-specific placeholder values to guide correct input
- Real-time error feedback when input does not match the selected format
- 100% client-side — barcode data never leaves your browser
- No sign-up, no account, and completely free to use
- Responsive design with dark mode support for all devices
Frequently Asked Questions
What barcode formats does this generator support?
The generator supports six formats: CODE128 (general purpose, any ASCII text), EAN-13 (13-digit international product barcodes), EAN-8 (8-digit compact product barcodes), UPC-A (12-digit North American retail barcodes), CODE39 (alphanumeric industrial barcodes), and ITF-14 (14-digit shipping carton barcodes).
How do I generate a barcode?
Select your desired barcode format from the dropdown menu, enter the appropriate content in the text field (each format has a placeholder showing the correct format), and click Generate. The barcode will appear below the button. Click Download PNG to save the image.
What is the correct input for EAN-13 barcodes?
EAN-13 barcodes require exactly 13 digits. The last digit is a check digit calculated from the first 12. For example, 5901234123457 is a valid EAN-13 barcode. If your input does not match the required format, the tool will display an error message.
What is the difference between CODE128 and CODE39?
CODE128 can encode the full ASCII character set (128 characters) and produces a more compact barcode. CODE39 only encodes uppercase letters, digits, and a few special characters, but is simpler to implement in older systems. CODE128 is generally preferred for modern applications.
What resolution is the downloaded PNG?
The PNG is generated by rendering the SVG barcode to an HTML canvas element at its natural SVG dimensions, which uses the width and height settings of the barcode (default width: 2px per bar, height: 100px). For high-resolution printing, you can scale the image up in your design software.
Is my barcode data private?
Yes. All barcode generation happens entirely in your browser using JavaScript. Your input — including any product codes, SKUs, or tracking numbers — is never sent to any server or stored anywhere. The tool works completely offline once the page has loaded.
Can I use this tool to generate barcodes for retail products?
Yes, this tool can generate retail-ready barcodes in EAN-13, EAN-8, and UPC-A formats. However, for commercial products sold in stores, you typically need to obtain a licensed barcode number from GS1, the international barcode standards organization, rather than creating your own number.
Is the Barcode Generator free?
Yes, the Barcode Generator is completely free with no usage limits, no watermarks on downloaded images, and no account required. It is part of liminfo.com's suite of free online tools.