Free Online Barcode Scanner

How to Scan a Barcode Online

This barcode scanner works entirely in your web browser — no app download or installation required. You can scan barcodes two ways:

1. Camera scan: Click "Use Camera", allow camera access when prompted, and point your camera at the barcode. The scanner continuously analyzes the video stream and automatically detects and reads the barcode in real time.
2. Image upload: Click "Upload Image" and select a photo from your device that contains a barcode. The scanner analyzes the image and extracts the barcode data. Works with screenshots, product photos, and document scans.

How the Scanner Works

This scanner uses a two-tier detection approach for maximum compatibility:

• BarcodeDetector API (primary): Modern browsers (Chrome 83+, Edge 83+, Android Chrome) include a native BarcodeDetector API that provides fast, reliable hardware-accelerated barcode detection. When available, the scanner uses this API first.
• ZXing-WASM (fallback): For browsers without native BarcodeDetector support (Firefox, Safari, older Chrome), the scanner falls back to ZXing compiled to WebAssembly — a battle-tested open source barcode detection library used in millions of applications. This ensures the scanner works on virtually any modern browser.

All processing happens locally in your browser. No images or video frames are transmitted to any server.

Privacy: Your Data Stays in Your Browser

Privacy is a core design principle of this scanner. Here is what happens with your data:

• Camera access is used only for real-time scanning and is never recorded or saved
• Uploaded images are processed in-memory and never stored on disk or in the cloud
• Decoded barcode values are displayed in your browser only — never sent to our servers
• No analytics events are triggered from scan results

Browser Compatibility

The scanner works in all modern browsers. The experience varies slightly depending on your browser's capabilities:

Browser	Camera Scan	Image Upload	Detection Engine
Chrome 83+ (Desktop/Android)	✓	✓	BarcodeDetector API
Edge 83+	✓	✓	BarcodeDetector API
Safari (iOS/macOS)	✓	✓	ZXing-WASM
Firefox	✓	✓	ZXing-WASM
Samsung Internet	✓	✓	BarcodeDetector API

Tips for Best Scanning Results

• Lighting: Ensure the barcode is well-lit and evenly illuminated. Avoid shadows and glare.
• Distance: For camera scanning, hold the camera about 6–12 inches (15–30cm) from the barcode.
• Framing: Make sure the entire barcode is visible within the camera frame, including the quiet zones (white space on each side).
• Steadiness: Hold the camera steady. Motion blur is one of the most common causes of failed scans.
• Image quality: For image uploads, use the highest resolution available. Blurry or low-resolution photos scan poorly.
• Damaged barcodes: Heavily damaged, scratched, or partially obscured barcodes may not scan. Try increasing the image contrast before uploading.

Supported Barcode Formats

This scanner can detect and decode the following barcode types:

• QR Code: 2D matrix barcode for URLs, text, WiFi credentials, and more
• EAN-13: International retail product barcode (13 digits)
• EAN-8: Compact retail barcode for small packages (8 digits)
• UPC-A: North American retail product barcode (12 digits)
• UPC-E: Compressed UPC for small packages (6–8 digits)
• Code 128: High-density alphanumeric barcode for shipping and logistics
• Code 39: Alphanumeric barcode used in industrial and military applications
• ITF-14: 14-digit barcode for outer case and pallet labeling
• Codabar: Numeric barcode used in libraries and blood banks

Frequently Asked Questions

Does this scanner work on mobile?

Yes. The camera scanner uses your phone's rear camera for scanning. On iOS and Android, allow camera permissions when prompted.

Is my data private?

All scanning happens entirely in your browser. No images or barcode data are ever sent to our servers.

What if my barcode isn't detected?

Try uploading a higher-resolution photo of the barcode with good lighting. Damaged or very small barcodes may not scan reliably.

Can I scan QR codes with this tool?

Yes. This scanner fully supports QR codes in addition to all major 1D barcode formats. Point your camera at any QR code or upload a photo containing one.