Barcode Generator

Q: Which format should I choose — Code 128 or Code 39?

Code 128 encodes the full ASCII character set at higher density and suits longer strings. Code 39 supports uppercase letters and digits only, but is readable by virtually every legacy scanner, making it a safe choice for older hardware environments.

Create professional barcodes for products

Barcode Value

CODE128: Any alphanumeric text

Width

Height

📦 Barcode Types

• CODE128: Alphanumeric, high density
• EAN-13: 13 digits, retail products
• UPC: 12 digits, North America
• CODE39: Alphanumeric, industrial

💡 Usage

Barcode được sử dụng rộng rãi trong retail, logistics, inventory management, và asset tracking. Chọn loại barcode phù hợp với nhu cầu của bạn.

Free Barcode Generator Online

VSM's free barcode generator lets you encode any text or number into a high-quality barcode image in seconds — choose from popular symbologies like Code 128, EAN-13, or UPC-A, preview the result live, and download a print-ready PNG or SVG file without installing any software.

Benefits of the barcode generator

Supports all major symbologies: Code 128, EAN-13, EAN-8, UPC-A, ITF, Code 39, and QR Code in one place.
Export as PNG or scalable SVG — both formats are ready for direct use in print layouts or digital workflows.
Runs entirely in the browser; your input data never leaves your device, keeping sensitive SKUs or serial numbers private.
Completely free with no daily limits — generate as many barcodes as your project requires.
Adjustable bar width, height, and color so the output matches your label or document design.

Use cases for barcode generation

Label retail products with EAN-13 or UPC-A barcodes scannable at any standard point-of-sale terminal.
Streamline warehouse operations by assigning Code 128 barcodes to each SKU or shelf location.
Print barcodes on event tickets, library cards, or membership passes for instant lookup.
Embed barcodes in invoices, shipping labels, and logistics documents to speed up processing.
Generate test barcodes during development of scanning apps, POS software, or inventory systems.
Create asset tags for office equipment, tools, or IT hardware to simplify tracking and audits.

How to use the barcode generator

Select a barcode format from the dropdown — for example, EAN-13 for retail products or Code 128 for internal logistics.
Type or paste the value you want to encode; the tool validates length and character rules for the chosen format automatically.
Adjust width, height, or foreground color in the options panel and see a live preview update in real time.
Click Download to save the barcode as PNG (for quick sharing) or SVG (for high-resolution print).

Frequently asked questions

Can I use the generated EAN-13 barcode on products sold in stores? The tool produces a correctly structured EAN-13 image, but for commercial retail use you must obtain a licensed GS1 company prefix. It is ideal for prototyping, internal testing, and private-label use.

What is the difference between PNG and SVG output? PNG is a pixel-based image best for digital screens and quick sharing. SVG is vector-based and scales to any print size without quality loss, making it the preferred choice for professional label printing.

Is my data sent to a server when I generate a barcode? No. All processing happens client-side inside your browser, so your product codes, serial numbers, or any other input remain completely private.

Which format should I choose — Code 128 or Code 39? Code 128 encodes the full ASCII character set at higher density and suits longer strings. Code 39 supports uppercase letters and digits only, but is readable by virtually every legacy scanner, making it a safe choice for older hardware environments.