QR Code Scanner (Webcam & File)
Scan and decode QR codes instantly using your device's live camera or by uploading an image screenshot with 100% private in-browser decoding.
Upload QR Code Image
PNG, JPG, WEBP, or SVG screenshot
What is QR Code Scanner (Webcam & File)?
The QR Code Scanner reads and decodes 2D QR codes in real time using your device's webcam/camera or from uploaded image files (PNG, JPG, WebP). It automatically parses detected payloads including website URLs, WiFi network credentials, vCard contact information, and raw text with instant copy-to-clipboard functionality.
Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.
How to Use the QR Code Scanner (Webcam & File)
- 1Select your scanning method: "Live Camera" or "Upload Image".
- 2If using the camera, grant browser camera permissions and align the QR code within the highlighted viewfinder.
- 3If uploading an image, drag and drop or browse for an image file containing a QR code.
- 4View the decoded content instantly, copy the text to your clipboard, or click direct links to open.
Formula & Calculation Logic
Processes video stream frames or bitmap pixels via client-side jsQR algorithms, locating corner finder patterns and decoding 2D matrix Reed-Solomon blocks.
QR_Decoder = Binarize(ImageData) -> Find_Finder_Patterns(1:1:3:1:1) -> Reed_Solomon_Decode()QR Code Scanner (Webcam & File) Frequently Asked Questions
Related QR & Barcode
Explore more free tools in this category
Custom QR Code Generator
Generate customized QR codes for URLs, WiFi credentials, vCard contact cards, email, SMS, and WhatsApp.
Barcode Generator (CODE128, EAN, UPC)
Generate standard Code 128, EAN-13, UPC-A, Code 39, and ITF barcodes with customizable labels and sizing.
Barcode Scanner (Camera & Image)
Decode 1D barcodes from image files or real-time webcam scanning directly in your browser.