Barcode Generator
Turn any text, product ID, SKU or tracking code into a scannable Code 128, UPC-A, EAN-13 or Code 39 barcode — free, instant and private, with no signup and no watermark.
Enter a value, pick a symbology, then click Generate.
What Is a Barcode Generator?
A barcode generator is a tool that turns text — a product code, an SKU, an ISBN, a tracking number — into a barcode, the black-and-white pattern of parallel bars and spaces that a laser scanner or camera reads. Instead of typing a long code by hand, a checkout or inventory scan reads the bars instantly and looks up the exact item or record.
You simply type the value you want to encode, pick a symbology, and the generator renders a scannable barcode. The most common formats are Code 128 for general numeric and alphanumeric data, UPC-A and EAN-13 for retail point-of-sale products and GTINs, and Code 39 for simple asset, warehouse and document labels.
Because the generator runs entirely in your browser with the JsBarcode library, there is nothing to install and nothing to upload. Click Generate to draw the barcode, then save it as a vector SVG (ideal for print) or a PNG (ideal for screens). No signup, no watermark, no limits.
How to Use the Barcode Generator
- Type the value you want to encode — a product ID, SKU, serial or tracking number.
- Choose a symbology from the dropdown: Code 128, UPC-A, EAN-13 or Code 39.
- Drag the height slider to set how tall the bars should be.
- Click Generate to render the barcode in your browser.
- Click Download SVG or Download PNG to save the file, or Copy to grab the barcode's data URI.
Example
Type TOOLCUBBY-123, keep the symbology on Code 128, set the height to 80, and click Generate. The tool renders a full Code 128 barcode with the human-readable text underneath and shows the message "Barcode ready". From there, Download SVG saves barcode.svg (a crisp vector you can scale for print) and Download PNG saves barcode.png. Scan the image with a barcode scanner and it returns TOOLCUBBY-123.
Common Use Cases
- Retail: Printing EAN-13 or UPC-A codes on product packaging and shelf labels for the checkout scanner.
- Inventory: Tagging stock items, cartons and storage bins so counts and locations are read at a glance.
- Tracking: Embedding a serial or consignment number in a Code 128 barcode for shipments and delivery logs.
- Tickets: Printing a code on an event, travel or admission ticket to validate entry quickly.
- Product labels: Adding a scannable SKU or batch number to a label, tag or asset record.
Pro Tips
- Choose Code 128 for most text and numbers — it is dense and supports the full ASCII set.
- Use EAN-13 or UPC-A for products sold through a retailer: the numeric GTIN is what the point-of-sale system expects.
- Keep a clear white margin (quiet zone) around the barcode so scanners can tell where the bars begin and end.
- Test the image on a real scanner before mass-printing; a tiny printed barcode with no quiet zone is the top cause of scan failures.
FAQ
Is the barcode generator free?
Yes — it is completely free with no signup, no limits and no watermark.
Which symbologies are supported?
Code 128, UPC-A, EAN-13 and Code 39 are all supported. Pick one from the dropdown before generating.
Can I download the barcode?
Yes. Click Download SVG for a crisp vector or Download PNG for a raster image to save to your device.
Is my data sent anywhere?
No. Everything is rendered in your browser by the JsBarcode library. Nothing you type is uploaded, stored or shared.
What can I encode?
Any text, number, product ID, SKU or tracking code. UPC-A needs 12 digits and EAN-13 needs 12 or 13 digits; Code 39 supports uppercase letters and digits.
How do I choose a symbology?
Use Code 128 for general text and numbers, EAN-13 or UPC-A for retail point-of-sale products, and Code 39 for simple alphanumeric asset labels.
Why won't my barcode render?
The data may not fit the symbology. UPC-A needs exactly 12 digits, EAN-13 needs 12 or 13 digits, and Code 39 does not support lowercase letters. Retype the value and try again.
Does a barcode expire?
No. Once generated the image is yours; it does not expire and no account is needed to keep using it.
Can I print the barcode?
Yes. Download SVG for print (vector, scales to any size) or PNG, and keep a clear white margin (quiet zone) around it for reliable scanning.
Is it private?
The tool renders the barcode entirely on your device. It needs no account, nothing is uploaded, and nothing is stored by us.
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