Free · Browser-only · No upload

Barcode Generator

Barcode code generator · Free barcode gen · Generate barcode online

Use this barcode generator and barcode code generator to create Code 128, EAN-13, UPC, and more. A free barcode code generator and free barcode gen tool— generate barcode online and download PNG without installing software.

For square QR codes (URLs, Wi-Fi), use our QR Code Generator. This page is for linear retail and logistics barcodes only.

ValueFormat

Bar widthHeight (px)

Show text under bars

Barcode generator guide

Free barcode generator online

A barcode generator creates the vertical lines scanners read at checkout and in warehouses. This free barcode code generator runs in your browser with JsBarcode—enter a value, pick a format, preview, and download PNG. No upload required.

Use it as a free barcode gen tool for prototypes, inventory labels, and classroom demos. Production retail catalogs should still validate check digits against your numbering authority.

Barcode code generator formats explained

Code 128 is the flexible default for internal SKUs and URLs encoded as strings. EAN-13 and UPC-A expect numeric GTIN lengths with valid check digits—JsBarcode can compute checks when you omit the final digit on some formats.

Code 39 supports uppercase letters and is common in logistics. ITF-14 targets cartons. Pick the symbology your scanner or retailer specifies; mixing formats on one label causes scan failures.

Generate barcode online vs QR codes

Linear barcodes (1D) and QR codes (2D) serve different roles. QR holds URLs and Wi-Fi; EAN/UPC identify products at POS. For square phone-scannable codes, use our QR Code Generator instead of this barcode generator.

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FAQ

Barcode FAQ

Is this barcode generator free?

Yes. This free barcode code generator and free barcode gen workflow has no signup and runs locally.

How do I generate barcode online?

Enter your value, choose format, adjust width/height, and download PNG when the preview looks correct.

What is a barcode code generator?

It is another phrase for barcode generator—software that renders bars from your data string.

Why did EAN-13 fail?

EAN-13 needs 12 or 13 numeric digits with a valid check digit. Verify your GTIN length.

Is data sent to a server?

No. JsBarcode draws in your browser only.

Can I make QR codes here?

No. Use the QR Code Generator for 2D matrix codes.

Barcode Generator Free — Create Barcode Online