No, absolutely not. This QR code scanner runs entirely in your browser. All camera processing, image analysis, and QR decoding happens locally on your device using JavaScript and the jsQR library. No video frames, images, or scan results are ever uploaded, transmitted, or stored on any remote server. Your privacy is fully protected — the tool works even when you're offline after the page loads.

This tool supports all standard QR code formats, including: URLs (website links), plain text, phone numbers (tel:), email addresses (mailto:), SMS messages (sms:), WiFi network credentials (WIFI:), vCard contact information, geolocation coordinates (geo:), and calendar events. The decoder automatically detects the content type and provides appropriate actions — for URLs you can open them directly, and for text you can copy it with one click.

Several reasons may cause camera issues: (1) You haven't granted camera permission — check your browser's site settings and ensure camera access is allowed. (2) Your browser doesn't support the MediaDevices API — please use a modern browser like Chrome, Firefox, Edge, or Safari. (3) The page is served over HTTP instead of HTTPS — most browsers require a secure connection (HTTPS) for camera access, except for localhost. (4) Another application is using your camera. If all else fails, you can still use the Upload Image feature to scan QR codes from saved images.

The live camera scanner processes one QR code per frame. If multiple QR codes are visible in the camera view, it will typically decode the most prominent or first-detected one. For bulk scanning, you can upload multiple images one after another using the Upload Image button. Each scan result is saved in the history panel for easy reference.

This QR scanner works on all modern browsers: Google Chrome (version 53+), Mozilla Firefox (version 36+), Microsoft Edge (version 79+), Safari (version 11+ on macOS and iOS), and Opera (version 40+). On iOS devices, Safari requires iOS 11 or later. For the best experience, we recommend keeping your browser updated to the latest version. The image upload fallback works on virtually all browsers, including older ones.

1. Ensure good lighting — QR codes need sufficient contrast between the dark and light modules. 2. Hold the camera steady and keep the QR code within the scanning frame (the square overlay). 3. Avoid glare or reflections on the QR code surface. 4. Keep the QR code roughly parallel to the camera — extreme angles reduce recognition accuracy. 5. If scanning from a screen, increase the screen's brightness and avoid moiré patterns. 6. For small or dense QR codes, move the camera closer so the code fills more of the scanning frame.

Yes! Once the page and the jsQR library are loaded, the tool can function entirely offline. The camera-based scanning and image upload decoding both run locally in your browser without any network requests. This makes it perfect for use in areas with limited connectivity, or when you want to ensure your scanned data stays completely private. You can even save the page for offline use in most browsers.