Barcode Generator
A barcode generator is a free online tool that converts numeric or alphanumeric data into a scannable barcode image in standard formats like EAN-13, UPC-A, Code 128, and Code 39.
How to use Barcode Generator
- Choose barcode type β Select from EAN-13, UPC-A, Code128, Code39, or ITF-14.
- Enter your data β Type the numbers or characters to encode.
- Download PNG β Click download to save a high-resolution PNG ready for print.
Key features
- Supports EAN-13, UPC-A, Code128, Code39, ITF-14
- High-resolution PNG export
- Perfect for product labels and inventory
- 100% client-side β no upload
- Free and unlimited
What is a Barcode?
A barcode is a machine-readable representation of data using parallel lines of varying widths. Traditional 1D barcodes encode data linearly and are still the global standard for retail, logistics, and inventory. Popular formats include EAN-13 (used on nearly every retail product worldwide), UPC-A (North American retail), Code128 (used in shipping and internal logistics), and Code39 (used in industrial and government applications).
Why Generate Barcodes Online?
Barcode generation software is often expensive and requires installation. Online generators like this one produce the same standardized output instantly, in your browser, with no software to install. Whether you need a single product label or hundreds of inventory tags, this tool saves time and money.
Which Format Do You Need?
If you're labelling retail products for sale in a physical store, you need EAN-13 (Europe, Asia) or UPC-A (North America). For internal inventory, shipping, or warehouse use, Code128 is the most flexible β it encodes numbers and letters. Code39 is common in automotive and government. ITF-14 is used for cartons and shipping cases.
The ShopBill Pro Advantage
If you run a shop, retail store, or warehouse, ShopBill Pro's billing software includes barcode support natively. Scan products at the point of sale, track stock, and print labels directly from the app. This free barcode generator is a companion tool for quick, standalone label creation.
Pro tips
- Print barcodes at least 1.5 inches wide for reliable scanning
- Use high-contrast black on white β avoid colored backgrounds
- Leave at least 1/8 inch of white space (quiet zone) on both sides
- Test-scan with your actual scanner before printing hundreds of labels
Common use cases
- Retail product labels (EAN-13, UPC-A)
- Inventory tags and stock keeping
- Shipping labels and carton codes
- Event wristbands and tickets
- Library book management
- Asset tracking in offices
Frequently asked questions
Is the barcode generator free?+
Yes, completely free with no limits or watermarks.
Which barcode type should I use?+
EAN-13 for retail products in most countries, UPC-A for US/Canada retail, Code128 for shipping and internal use, Code39 for industrial applications.
Can I use generated barcodes on products?+
Yes, but the number itself must be legitimate (from GS1 for retail). The barcode image is just a visual representation.
Are barcodes uploaded to a server?+
No. Everything runs in your browser β no data leaves your device.
What resolution are the barcodes?+
High-resolution PNG β suitable for product labels up to 4 inches wide.
Need invoicing, billing & inventory?
Try ShopBill Pro β the full business software. Free plan available.