Barcode Generator

Create professional barcodes in multiple industry-standard formats — from retail product codes (EAN-13, UPC-A) to general-purpose formats (Code 128, Code 39) and specialized types (ITF-14, Codabar, MSI, Pharmacode).

Every barcode is fully customizable. Adjust bar width, height, and colors. Show or hide the text label, change the font size and position, and control the margin around the barcode. Choose from quick presets or fine-tune each setting individually. When ready, download as a high-resolution PNG or scalable SVG, or copy the barcode image directly to your clipboard.

Full Customization

Control every visual aspect of your barcode

Custom colors and dimensions
Adjustable text labels
Quick-apply presets

Real-Time Preview

Instant barcode generation as you type

No generate button needed
Live validation feedback
Smooth performance

Privacy First

All processing happens in your browser

No server uploads
Works offline
Zero data tracking

Supported Barcode Types

Code 128

Supports all ASCII characters, variable length. Widely used in shipping and inventory management.

EAN-13

13-digit code used internationally for retail products worldwide.

UPC-A

12-digit code standard for North American retail products.

EAN-8

Compact 8-digit version of EAN-13 designed for small packages.

Code 39

Alphanumeric code used in industrial, military, and healthcare applications.

ITF-14

14-digit code for shipping cartons and logistics tracking.

Codabar

Numeric code used in libraries, blood banks, and healthcare facilities.

MSI

Numeric code for warehouse and inventory management systems.

Pharmacode

Binary code specifically used in pharmaceutical packaging.

Your Data Stays Private

All barcode generation happens entirely in your browser:

100% Client-Side Processing: Your product codes, inventory numbers, and sensitive data never leave your device. No server uploads, no tracking, no data collection.

No server processing — Your data never leaves your device
No tracking — We don't collect or store any input data
Works offline — Once loaded, the tool works without an internet connection

Table of Contents

1. Barcode Generator
- 1.1. Supported Barcode Types
- 1.2. Your Data Stays Private
2. How to Use the Barcode Generator
3. Features
4. Frequently Asked Questions

How to Use the Barcode Generator

Select a Barcode Type

Choose a barcode format from the dropdown menu. Each type displays a hint explaining the accepted characters and format requirements. The default is Code 128, which supports all ASCII characters and works for most general purposes.

Enter Your Value

Type the barcode data in the input field. The barcode preview updates automatically as you type — no need to press a generate button. A format hint below the dropdown tells you exactly what characters and length the selected type accepts.

Barcode Type	Input Format
EAN-13	Enter 12 digits (auto check digit) or all 13 digits
UPC-A	Enter 11 digits (auto check digit) or all 12 digits
Code 128	Any text or number combination
Code 39	Letters A-Z, digits 0-9, and special characters (- . $ / + % space)
Pharmacode	A number between 3 and 131,070

Customize the Appearance (Optional)

Click Customize Barcode to expand the design options:

Quick-Apply Presets

Choose from six ready-made styles for instant formatting:

Standard — Classic black on white, balanced dimensions
Compact — Space-saving design for tight layouts
Large — High-visibility format for distance scanning
Blue — Professional blue color scheme
Green — Fresh green styling
Red — Bold red accent (use with caution for scanning)

Visual Customization

Colors — Choose custom line color and background using the color picker or hex input
Bar Width — Adjust the thickness of individual bars (1-4 pixels)
Height — Set the barcode height from 40 to 200 pixels
Margin — Adjust the quiet zone around the barcode (0-30 pixels)

Text Label Settings

Show Text — Toggle the text label below the barcode on or off
Font Size — Choose text size from 12px to 24px
Text Position — Place the text label at the bottom or top

Download or Copy

Choose your output format and download or copy the barcode:

PNG Format

Raster Image

Best for digital use
Scale option (1× to 4×) for higher resolution
Ideal for websites and documents

SVG Format

Vector Format

Infinite scalability
No quality loss at any size
Perfect for printing

Quick Copy: Use the Copy button to copy the barcode as a PNG image directly to your clipboard for instant pasting into documents or design tools.

Features

9 Barcode Formats

Generate barcodes in Code 128, EAN-13, UPC-A, EAN-8, Code 39, ITF-14, Codabar, MSI, and Pharmacode. Each format uses the correct encoding standard and includes input validation specific to that barcode type.

Real-Time Preview

See your barcode update instantly as you type or change settings. There is no generate button — every change is reflected immediately in the SVG preview with a fast 200ms debounce for smooth performance.

Automatic Check Digit

For barcode types that require a check digit (EAN-13, UPC-A, EAN-8, ITF-14), you can enter just the data digits and the check digit is calculated automatically. Enter the full code if you already have it.

Full Customization

Adjust every aspect of your barcode's appearance. Change bar width and height, pick custom line and background colors, toggle text visibility, set font size and position, and control the margin. Apply one of six presets for quick styling — Standard, Compact, Large, Blue, Green, or Red.

PNG and SVG Export

Download your barcode as a PNG with configurable scale (1× to 4× for higher resolution) or as an SVG for infinite scalability. You can also copy the barcode as a PNG image to your clipboard for quick pasting into documents or design tools.

Input Validation

Each barcode type has specific validation rules. The tool shows format hints when you select a type and displays error messages when the input doesn't match the expected format — preventing invalid barcodes before they're generated.

Browser-Based Processing

All barcode generation runs entirely in your browser using JavaScript. No data is uploaded to any server, making it safe for product codes, inventory numbers, and any sensitive information.

Frequently Asked Questions

What is a barcode?

A barcode is a visual representation of data using parallel lines (bars) of varying widths and spacings. Barcode scanners read these patterns to quickly identify products, track inventory, manage shipments, and more.

Barcodes encode information in a machine-readable format, enabling fast and accurate data capture across retail, logistics, healthcare, manufacturing, and countless other industries.

Which barcode type should I use?

The right barcode type depends on your specific use case:

EAN-13 — International retail products
UPC-A — North American retail products
Code 128 — General-purpose labeling, shipping, and inventory
Code 39 — Industrial, military, and healthcare applications
ITF-14 — Shipping cartons and logistics
EAN-8 — Small product packages
Codabar — Libraries, blood banks, and healthcare
MSI — Internal warehouse and inventory management
Pharmacode — Pharmaceutical packaging

What is a check digit?

A check digit is an extra digit appended to the barcode data to detect scanning errors. For EAN-13, UPC-A, EAN-8, and ITF-14, the check digit is calculated from the other digits using a standard formula.

Automatic Calculation: This tool can calculate the check digit automatically — just enter the data digits without the check digit, and it will be computed for you.

What format should I download?

PNG is best for digital use — websites, documents, and on-screen display. Use the Scale option (2× or higher) for sharper output when printing or displaying at larger sizes.

SVG is a vector format that scales to any size without losing quality, making it ideal for print materials like labels, packaging, and signage. SVG files can be edited in design software like Adobe Illustrator or Inkscape.

What are the color requirements for barcodes?

For reliable scanning, maintain high contrast between the bars and background. Dark bars on a light background works best.

Color Guidelines: Avoid red or orange for bars (scanners use red light), and avoid very dark backgrounds. Black on white is the safest combination for maximum scanning reliability.

What is the quiet zone?

The quiet zone is the blank margin surrounding the barcode. It helps scanners identify where the barcode starts and ends. Most barcode standards require a minimum quiet zone — typically 10 or more modules wide.

The Margin setting in this tool controls the quiet zone size. Insufficient quiet zone can cause scanning failures, so always maintain adequate spacing around your barcode.

Is my data safe?

Yes. All processing happens in your browser. No data is transmitted to any server. Your product codes, inventory numbers, and other information remain on your device.

Complete Privacy: This tool operates entirely client-side with zero server communication, making it safe for confidential product codes and sensitive business data.

Can I use these barcodes commercially?

The barcodes generated by this tool are standard-compliant and can be used for commercial purposes. However, for retail barcodes (EAN-13, UPC-A), you need to obtain a valid GS1 company prefix and product numbers from your local GS1 organization to ensure your codes are globally unique.

GS1 Registration: Visit GS1.org to register for official company prefixes and product codes for retail distribution.