Code128 is a high-density linear barcode symbology that can encode all 128 ASCII characters. It is widely used in shipping, packaging, and supply-chain applications.

Is there a character limit?

Code128 can technically encode up to 48 characters before the barcode becomes impractically wide to scan. Shorter strings (under 30 characters) are most reliable.

Will my barcode scan with a standard scanner?

Yes. Code128 is supported by virtually every barcode scanner, including handheld USB scanners, mobile apps such as Google Lens, and built-in camera scanners.

Is my data sent to any server?

No. All barcode generation happens entirely in your browser using JavaScript. Nothing is transmitted or stored on any server.

What download format is available?

You can download the barcode as a PNG image, which is suitable for both digital use and printing. For best print quality, use a height of 100 px or more.

Barcode Generator

Name: Barcode Generator
Availability: InStock
Author: Nham Vu

Type any text or number and instantly get a scannable Code128 barcode you can download as PNG.

Barcode Input

Text or Number

Bar Height: 80 px

Show human-readable label below bars

Enter text on the left to generate a barcode

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Summary

Type any text or number and instantly get a scannable Code128 barcode you can download as PNG.

How it works

Type or paste your text or number into the input field.
The barcode renders automatically as you type using the Code128 format.
Adjust the bar height and toggle the label display to suit your needs.
Click "Download PNG" to save the barcode image to your device.

Use cases

Generate product barcodes for retail packaging.
Create barcodes for inventory management and asset tracking.
Produce shipping labels and logistics codes.
Generate barcodes for library books or file folders.
Test barcode scanners during software development.
Create printable barcodes for event tickets or membership cards.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu