Tutorials

Step-by-step tutorials to help you learn Quagga2 by building real examples. These are learning-oriented guides designed to help beginners get hands-on experience.

Available Tutorials

Your First Barcode Scan ⭐ Start Here

Build a complete barcode scanner web app from scratch. You'll learn how to:

Set up HTML structure
Initialize Quagga2
Handle camera permissions
Process detected barcodes
Display results to users

Time: 15 minutes | Difficulty: Beginner

Decoding Static Images

Learn to decode barcodes from image files instead of camera feeds. Perfect for:

Photo upload features
Batch processing
Server-side Node.js applications
Testing without a camera

Time: 10 minutes | Difficulty: Beginner

Using with React

Integrate Quagga2 into a React application. Covers:

Component lifecycle management
Handling cleanup
State management
Common pitfalls and solutions

Time: 20 minutes | Difficulty: Intermediate

Using with Node.js

Use Quagga2 in server-side Node.js applications. Learn to:

Process images from filesystem
Handle image buffers
Batch decode multiple images
Build CLI tools

Time: 15 minutes | Difficulty: Intermediate

Prerequisites

Before starting these tutorials, you should have:

Basic HTML/JavaScript knowledge
A text editor
A web server (or ability to run npx serve)
A device with a camera (for live scanning tutorials)

Tutorial Approach

These tutorials follow a learning-by-doing approach:

Complete examples - Each tutorial provides full working code
Progressive complexity - Start simple, add features incrementally
Hands-on practice - Type the code yourself to build muscle memory
Real-world scenarios - Build things you'll actually use

Need Help?

If you get stuck:

Check the API Reference for method details
Review the Configuration Guide
Ask in Gitter Chat
Search GitHub Issues

Contributing

Found a bug in a tutorial or have an idea for a new one? Open an issue or submit a pull request!

Next: Start with Your First Barcode Scan →

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