Barcode Generator
Generate a scannable barcode from any text or number in the most common retail and logistics formats. Preview it live, then download it as a PNG — all rendered locally in your browser.
How to Use the Barcode Generator
- Type the text or number you want to encode.
- Choose a barcode format — CODE128 for general use, EAN-13/UPC-A for retail products, or CODE39 for logistics and inventory.
- Adjust bar width and height as needed.
- Click "Download PNG" to save the barcode image.
Why Use This Tool?
Is my data sent anywhere to generate the barcode?
No. The barcode is rendered entirely inside your browser using a JavaScript library that runs locally, and the PNG export uses your browser's own canvas rendering. The text or number you enter is never transmitted to a server, making this safe for internal SKUs, private inventory codes, or any data you'd rather not send through a third-party service.
Which format should I choose?
CODE128 is a flexible, high-density format that can encode any text or number and is widely used in shipping and logistics. EAN-13 and UPC-A are the standard formats printed on retail product packaging worldwide (EAN-13 requires exactly 12 or 13 digits, UPC-A requires 11 or 12 digits, with a check digit calculated automatically). CODE39 is an older, simpler format still common in some inventory and government ID systems.
Why does it say my input is invalid for a format?
Formats like EAN-13 and UPC-A have strict rules about the number of digits and only accept numeric characters — if your input doesn't match, the barcode can't be generated correctly. CODE128 and CODE39 are far more flexible, so switching formats is often the easiest fix if you're encoding non-numeric text.
Will this barcode scan correctly with a real scanner?
Yes — the underlying rendering library generates barcodes that follow the official specifications for each format, so they scan correctly with standard barcode readers and phone scanning apps. For printed labels, download at a larger bar width/height to ensure the lines stay crisp and don't blur together when printed small.