Barcode Generator

MiniWebtool’s Barcode Generator creates barcodes in formats including CODE128, CODE39, EAN-13, and UPC. Select the symbology appropriate for your data and adjust the appearance for labeling, inventory, or tracking.

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Help me understand MiniWebtool's Barcode Generator: https://miniwebtool.com/barcode-generator/. What can I use it for, what inputs or settings do I need, and how do I use it and understand the output? Walk me through one simple example. Use this page as your source and answer in English.

Free to useNo sign-up requiredUpdated Oct 2026

Barcode GeneratorTry it now — free ▼

Pick a quick example (CODE128, ABC-12345) and the barcode appears, ready to download as SVG or PNG

Seven formats (CODE128, CODE39, EAN-13, UPC, ITF-14, MSI, Pharmacode), bar width, height, colours and text options, with SVG and PNG download.

Select Barcode Format

||| CODE128 General purpose

||| CODE39 Industrial

||| EAN-13 Retail (intl)

||| UPC Retail (US)

||| ITF-14 Shipping

||| MSI Inventory

||| Pharmacode Pharmaceutical

Barcode Content

Quick Examples:

Customize Appearance

Bar Width (px)

Height (px)

Display Value

Font

Text Position

Bar Color

#000000

Background

#FFFFFF

Live Preview

||| Your barcode will appear here

Embed Barcode Generator Widget

About Barcode Generator

Welcome to the Barcode Generator, a powerful online tool that lets you create professional barcodes in multiple formats directly in your browser. Whether you need barcodes for inventory management, product labeling, shipping, or asset tracking, this generator supports all major barcode symbologies with customizable appearance options.

At a Glance

Barcode Generator creates linear barcodes in CODE128, CODE39, EAN-13, UPC-A, ITF-14, MSI and Pharmacode formats. Adjust the look, then download the barcode as an SVG or PNG. It does not make QR codes.

Barcode Generator: features at a glance
Feature	What you get	Good for
Seven formats	CODE128 and CODE39 for general and industrial use, EAN-13 and UPC-A for retail, ITF-14 for shipping cartons, MSI for inventory and Pharmacode for pharmaceutical packaging.	Labels, inventory, retail products and shipping
Input checks	Each format validates what you type and shows an example. Pharmacode takes numbers from 3 to 131070, and EAN-13 takes 13 digits.	Avoiding a barcode a scanner rejects
Appearance	Adjust bar width, height, bar and background colors and font. Human-readable text can show below the bars, above them or not at all.	Fitting a barcode to a label layout
Live preview	The barcode redraws as you type.	Checking the result before downloading
Download formats	Save as SVG for print and design work or PNG for documents and labels.	Placing barcodes in documents or print files

Supported Barcode Formats

||| CODE128

High-density barcode supporting all 128 ASCII characters. Ideal for logistics, shipping labels, and general-purpose encoding. Produces compact barcodes with excellent scanner readability.

Recommended for General Use

||| CODE39

Traditional barcode format supporting uppercase letters, digits, and special characters. Widely used in automotive, defense, and healthcare industries. Self-checking without requiring a check digit.

Industrial Standard

||| EAN-13

International retail barcode standard using 13 digits (12 data + 1 check). Found on consumer products worldwide. Includes country code, manufacturer code, and product code.

Retail Products

||| UPC-A

Universal Product Code used primarily in North America. Contains 12 digits encoding manufacturer and product information. The most common retail barcode in North America; EAN-13 is also accepted.

North American Retail

||| ITF-14

Interleaved 2 of 5 barcode for shipping containers and outer packaging. Encodes 14 digits including GTIN (Global Trade Item Number). Uses bearer bars for improved scanning.

Shipping & Logistics

||| Pharmacode

Specialized barcode for pharmaceutical packaging. Encodes numbers from 3 to 131070. Designed for high-speed automated packaging with excellent error detection.

Pharmaceutical

Barcode Format Comparison

Barcode Generator: Barcode Format Comparison
Format	Characters	Data Type	Best For
CODE128	128 ASCII	Alphanumeric	General purpose, logistics
CODE39	A-Z, 0-9, symbols	Alphanumeric	Industrial, government
EAN-13	13 digits	Numeric	International retail
UPC-A	12 digits	Numeric	North American retail
ITF-14	14 digits	Numeric	Shipping containers
MSI	0-9	Numeric	Inventory, warehousing
Pharmacode	3-131070	Numeric	Pharmaceutical packaging

How to Use This Barcode Generator

Select a barcode format: Choose the appropriate format for your use case. CODE128 is recommended for general purposes.
Enter your data: Type the content you want to encode. The generator will validate your input based on the selected format.
Customize appearance: Adjust bar width, height, colors, and text display options to match your design requirements.
Generate and preview: Click the Generate button to create your barcode with instant live preview.
Download: Save your barcode as SVG (scalable vector) or PNG (raster image) format.

Tips for Scannable Barcodes

Pro Tip: For best scanning reliability, use black bars on a white background, maintain adequate quiet zones (white space) around the barcode, and ensure the barcode is printed at a resolution of at least 300 DPI.

Contrast: Maintain high contrast between bars and background. Black on white is the standard and most reliable combination.
Size: Make sure the barcode is large enough to scan. A minimum bar height of 15mm is recommended for retail applications.
Quiet zones: Leave white space on both sides of the barcode (at least 10x the narrowest bar width).
Print quality: Use high-resolution printing (300+ DPI) and avoid stretching or compressing the barcode image.
Avoid colors: Red bars or backgrounds can cause scanning issues as many scanners use red laser light.

Frequently Asked Questions

What is a barcode and how does it work?

A barcode is a visual representation of data using parallel lines (bars) and spaces of varying widths. Barcode scanners read these patterns by measuring reflected light to decode the encoded information. Different barcode formats use different encoding schemes optimized for specific applications, such as retail (EAN/UPC), logistics (CODE128), or healthcare (pharmacode).

What is the difference between CODE128 and CODE39?

CODE128 is a high-density barcode that can encode all 128 ASCII characters, making it very compact and versatile. CODE39 is an older format that encodes uppercase letters, numbers, and some special characters, producing wider barcodes but being simpler to implement. CODE128 is generally preferred for modern applications due to its efficiency.

What is the difference between EAN-13 and UPC?

EAN-13 and UPC are both retail barcode standards. UPC (Universal Product Code) uses 12 digits and is primarily used in North America. EAN-13 (European Article Number) uses 13 digits and is the international standard. UPC-A codes can be represented as EAN-13 by adding a leading zero. Both formats include a check digit for error detection.

What is the best barcode format for general use?

CODE128 is typically the best choice for general-purpose barcode applications. It can encode any ASCII character, produces compact barcodes, and is widely supported by barcode scanners. For retail products, EAN-13 or UPC is required. For pharmaceutical applications, pharmacode is often mandated.

Can I use colored barcodes?

While you can create colored barcodes, the standard and most reliable configuration is black bars on a white background. This provides maximum contrast for scanner readability. If you use colors, ensure high contrast between the bars and background, and avoid red bars or backgrounds as many scanners use red laser light.

Additional Resources

Reference this content, page, or tool as:

"Barcode Generator" at https://MiniWebtool.com/barcode-generator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: October 7, 2026

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