Barcode Generator

How to use: step by step

1. 1
   Choose a barcode format
   Select from CODE128, EAN-13, EAN-8, UPC-A, UPC-E, CODE39, or ITF-14 depending on your use case.
2. 2
   Enter your value
   Type the text or digits you want to encode. Each format shows the exact input requirements.
3. 3
   Adjust appearance
   Set bar width, height, background colour, and line colour to match your label design.
4. 4
   Toggle human-readable text
   Enable or disable the decoded value displayed beneath the bars.
5. 5
   Download your barcode
   Click SVG for a lossless vector file or PNG for a high-resolution raster image at 2× resolution.

Frequently Asked Questions

What barcode formats does this tool support?

The generator supports CODE128, EAN-13, EAN-8, UPC-A, UPC-E, CODE39, and ITF-14: the most commonly used linear barcode standards across retail, logistics, and publishing.

What is the difference between CODE128 and EAN-13?

CODE128 can encode any ASCII text and is widely used in shipping and inventory. EAN-13 encodes exactly 13 digits and is the international standard for retail product identification, often printed on consumer product packaging.

Do I need to provide the check digit?

For EAN-13, EAN-8, UPC-A, and ITF-14 the tool automatically calculates and appends the check digit. You supply the data digits only: just enter 12 digits for EAN-13, for example.

Can I use this barcode generator for commercial products?

The barcode image itself is free to use. However, if you need a registered GS1 barcode (such as one that can be scanned at retail checkout globally), you must obtain an official GS1 company prefix. This tool is ideal for internal use, prototyping, or testing.

What resolution is the PNG download?

The PNG is rendered at 2× pixel density using an HTML Canvas, giving you a crisp, high-resolution image suitable for printing on labels up to a few inches wide.

Why does CODE39 reject some characters?

CODE39 has a limited character set: uppercase A–Z, digits 0–9, and the special characters space, hyphen, dollar, slash, plus, and percent. Lowercase letters and most punctuation are not part of the standard.

Is my barcode data sent to a server?

No. All barcode generation happens entirely in your browser using the JsBarcode library. Your input never leaves your device.

Can I adjust the colours for dark-mode labels?

Yes. Use the Background and Lines colour pickers to set any hex colour. For dark labels, swap the defaults: set the background to black (#000000) and the lines to white (#ffffff).

What is ITF-14 used for?

ITF-14 (Interleaved 2-of-5, 14 digits) is used to mark cartons and pallets of products. It encodes a GTIN-14 and is typically printed directly onto corrugated cardboard.

How do I embed the barcode in a document?

Download the SVG and insert it into Word, Google Docs, Figma, or any vector-capable tool. The SVG scales perfectly at any size without pixelation.