Quagga2 Documentation
Welcome to the Quagga2 documentation! Quagga2 is a JavaScript barcode scanner library supporting real-time location (localization) and decoding of various barcode types in both browser and Node.js environments.
Quick Links
Getting Started
New to Quagga2? Start here:
- Installation & Quick Start - Get up and running in minutes
Documentation Structure
This documentation follows the Divio Documentation System, organizing content into four types based on what you need:
📚 Tutorials - Learning-oriented
Step-by-step lessons to help you learn by doing. Perfect if you’re just getting started.
- Your First Barcode Scan - Scan barcodes with your camera
- Decoding Static Images - Process image files
- Using with React - React integration guide
- Using with Node.js - Server-side barcode scanning
🛠️ How-To Guides - Task-oriented
Practical guides for accomplishing specific goals. Use these when you have a problem to solve.
- Configure Barcode Readers - Select which barcode types to scan
- Optimize Performance - Improve speed and accuracy
- Handle Difficult Barcodes - Deal with poor lighting, rotation, etc.
- Use Debug Flags - Enable diagnostic output
- Create External Readers - Build custom barcode decoder plugins
📖 Reference - Information-oriented
Technical descriptions and API documentation. Look here when you need precise details.
- API Documentation - Complete API reference
- Configuration Options - All config parameters explained
- Camera Access API - Camera control methods
- Supported Barcode Types - Available decoders
- Browser Support - Compatibility information
- Dependencies - Package dependencies explained
💡 Explanation - Understanding-oriented
Background, context, and deeper understanding. Read these to learn why things work the way they do.
- How Barcode Localization Works - The algorithm behind barcode detection
- Algorithm Overview - Image processing pipeline
- Architecture - Code structure and design decisions
Additional Resources
- Contributing Guide - How to contribute to Quagga2
- Gitter Chat - Ask questions and get help
Framework Integration
Using Quagga2 with a specific framework?
- React: quagga2-react-example and quagga2-redux-middleware
- Angular: ngx-barcode-scanner or mobile-scanning-demo
- Vue 2: vue-quagga-2
- Vue 3: vue3-quagga-2
- ThingWorx: ThingworxBarcodeScannerWidget
External Readers and Other Related Projects
- DataMatrix Reader: hackathi/quagga2-reader-datamatrix
- QR Code Reader: ericblade/quagga2-qr-code-reader
- PDFBarcodeJS: rexshijaku/PDFBarcodeJS
Who Uses Quagga2?
Quagga2 is used by developers worldwide in various applications, including inventory management, retail point-of-sale systems, library systems, and mobile scanning apps. If you’re using Quagga2 in your project, let us know!
- Internet Archive Open Library: internetarchive/openlibrary
- Grocy: grocy/grocy
- German Federal Agency For Technical Relief: mziech/thw-inventory
- Food Coop Shop: foodcoopshop/foodcoopshop
- Rintagi: Rintagi/Low-Code-Development-Platform
- LINE: line/line-api-use-case-smart-retail
- Veganify: frontendnetwork/veganify
- Appsemble: Appsemble
- Intake24: intake24/intake24
- FridgeToPlate: COS301-SE-2023/FridgeToPlate
- Nutri-Scanner: kishan9535/Nutri-Scanner
- Musclog: blopa/musclog-app
About This Documentation
This documentation is maintained alongside the Quagga2 codebase. If you find errors or have suggestions for improvement, please open an issue or submit a pull request.
Last Updated: November 2025