What is ZXing and how is it used in this barcode and QR code tool?

ZXing is an open-source barcode and QR code processing library that supports 1D and 2D formats. This online barcode and QR code generator, scanner, and decoder uses a browser-based implementation inspired by ZXing technology to scan, generate, and decode barcodes and QR codes locally without uploading data to a server.

What barcode and QR code formats are supported?

The tool supports commonly used formats including QR Code, DataMatrix, PDF417, Aztec, UPC-A, UPC-E, EAN-8, EAN-13, CODE39, CODE93, CODE128, ITF, Codabar, WiFi QR codes, and vCard contact QR codes.

Why is my barcode or QR code scanner camera not working?

Barcode or QR code scanner camera issues are usually caused by missing browser permissions, insecure HTTP connections, or another application using the camera. Allow camera access, use HTTPS, close other camera apps, and update your browser.

What are the best practices for generating scannable barcodes and QR codes?

For reliable scanning, use high contrast colors, sufficient code size, proper error correction, and maintain a clear quiet zone around the code. Always test generated barcodes and QR codes using multiple scanners before deployment.

How do I generate barcodes or QR codes in bulk?

Bulk barcode and QR code generation allows you to create multiple codes at once. Enter one value per line, select the desired format, and generate all codes in a single action. This feature is ideal for inventory management, product labeling, logistics, and asset tracking.

Is my data secure when using this barcode and QR code tool?

Yes. All barcode and QR code processing happens locally in your browser. No images or data are uploaded, stored, logged, or tracked, ensuring complete privacy and security.

Is this tool a good alternative to ZXing.org for barcode and QR code scanning?

Yes. This browser-based tool is a modern alternative to ZXing.org. It enables barcode and QR code scanning, decoding, and generation directly in the browser without software installation, while also supporting bulk barcode and QR code creation.

Why is my barcode or QR code not scanning properly?

Scanning issues are usually caused by low contrast, small code size, poor image quality, incorrect format selection, or missing quiet zones. Using proper sizing, high contrast colors, and testing with multiple scanners improves scan reliability.

How to Use ZXing Decoder Online.

The ZXing Decoder Online App (available at zxing.app) is a high-performance web utility built on the world-renowned Zebra Crossing engine. While legacy platforms like zxing.org are designed for basic developer testing, our professional app offers an intuitive, secure, and multi-functional interface for all 1D and 2D scanning needs.

Advanced Scanning via Live Camera, file upload and URL

In 2026, the standard for a ZXing online decoder is real-time processing. Our app allows you to activate your device's camera with a single click, utilizing advanced autofocus algorithms to decode barcodes instantly. Also you can decode from single and bulk images it one click. Furthermore, you can decode directly from a URL—simply paste the link to an image found online, and our system extracts the data without requiring a download.

ZXing Online App Camera Scanning Interface

Bulk Decoding: Processing Multiple Images

One of the most powerful features of the ZXing.app is its ability to handle bulk image decoding. You can drag and drop dozens of files (JPG, PNG, WebP, or GIF) into the dashboard simultaneously. The app processes each file locally in your browser using WebAssembly (WASM), ensuring that your sensitive data is never uploaded to a server, providing 100% privacy.

Technical Support & Format Specifications

Our tool is a free online barcode and QR code utility designed to decode, scan, and generate instantly. Powered by the ZXing Org engine, we support image uploads, image URLs, and live camera scanning. Full format support includes: UPC-A, UPC-E, EAN-8, EAN-13, Code 128, Code 39, ITF, Codabar, QR Code, Data Matrix, PDF417, and Aztec. 100% browser-based, secure, and mobile-friendly.

Frequently Asked Questions (FAQ)

Is ZXing.app safe for private data?
Yes. Unlike many online decoders, ZXing.app performs the decoding logic locally in your browser via WASM. Your images and sensitive data are never uploaded to a server.

Does it support GS1-128 and Data Matrix?
Absolutely. We support the full ZXing library spectrum, including industrial formats like GS1-128, PDF417, and high-density Data Matrix codes.

Can I use this on iPhone and Android?
Yes. Our interface is a Progressive Web App (PWA), meaning it works flawlessly in Safari, Chrome, and Firefox without needing an app store download.

Why ZXing.app Outperforms Legacy Tools

While ZXing.org remains a respected library, the ZXing Decoder Online App is optimized for the modern user. With its mobile-responsive design, bulk processing capabilities, and live camera integration, it is the most reliable tool for professionals looking for speed and security.