Barcode Generator Online Free
Generate barcodes in Code 128, EAN-13, EAN-8, UPC-A, and QR formats. Customize size, colors, and labels. Download as PNG or SVG.
How This Barcode Generator Online Free Works
This barcode generator online free renders barcodes directly in your browser using the Canvas API. It supports the most common 1D barcode standards used in retail, logistics, and manufacturing, with no plugins or server uploads needed.
Code 128 encodes any ASCII character and is the most versatile choice for general purposes. EAN-13 and UPC-A are the formats used on most retail product packaging worldwide. ITF-14 is used on shipping cartons and outer cases.
What this tool does
How to use it
Choose a format
Select the barcode standard that matches your use case, Code 128 for most things, EAN-13 for retail.
Enter the value
Type or paste the number or text to encode. The tool validates it against the selected format’s rules.
Customize it
Adjust colors, bar dimensions, and font size to match your design or print requirements.
Download or copy
Save as a high-resolution PNG for printing or SVG for vector use. Or copy directly to clipboard.
Barcode Generator Online Free — Frequently Asked Questions
Code 128 is the safest general choice — it encodes letters and numbers and is scannable by virtually every barcode reader. Use EAN-13 for retail products sold in stores. UPC-A is the US equivalent. ITF-14 is for outer shipping cartons. Code 39 is common in industrial and inventory contexts.
EAN-13 requires exactly 13 digits. The last digit is a check digit calculated from the first 12 using a standard algorithm. If you enter 12 digits, this tool calculates and appends the check digit for you. If you enter all 13, it validates the check digit and warns you if it is incorrect.
The barcode image itself is free to use for any purpose. However, if you need a globally unique product barcode that retailers will accept, you need to purchase a registered GS1 company prefix and product number. A random EAN-13 number will work technically but may conflict with another company’s existing product.
Use 2x scale for standard print quality and 3x or 4x for anything that will be printed at high quality or large size. SVG format is vector-based and scales perfectly to any print size without pixelation, making it the ideal choice for professional use.
No. All barcode rendering happens in your browser using the Canvas API. Your data never leaves your device, which is important if your barcodes encode internal product IDs, serial numbers, or other sensitive identifiers.