QR Code Generator & Scanner
Generate high-resolution customized QR codes or scan existing ones. Safe client-side execution keeps your text and camera feed completely secure.
Drag & Drop QR Code Image
Or click to select a file from your device
How Does QR Code Generation Work Client-Side?
QR codes (Quick Response codes) represent binary data encoded as a matrix of dark blocks on a light grid. Our tool integrates the light qrcode.js library:
- Your input text or link URL is converted into a structured byte stream.
- The library applies Reed-Solomon error correction to the data, generating safety correction bytes to protect against scanning issues due to dirt or damage.
- It calculates the matrix grid size and renders it on a local
canvaselement using the custom HEX color values you specified, then generates a PNG image for download.
Secure Web-Camera QR Code Scanning
Most online scanners upload your webcam screenshots or uploaded photos to their remote servers for decoding. This leaks your camera feed or image contents to remote logs.
Our **QR Code Scanner** is built on the modern html5-qrcode framework. It accesses your camera stream securely in the browser sandbox. The frame capturing and image decoding happen in JavaScript locally on your device. Your camera feed is 100% confidential and is never transmitted online.
Frequently Asked Questions
Camera scans require your browser's explicit permission to access the webcam. If the camera stream fails to load, verify that your browser hasn't blocked camera access for DoItQuick.tools in your site permission settings, and that no other application is currently using your webcam.
We generate QR codes with standard Medium (M) error correction capability, which allows the code to remain 100% readable even if up to 15% of the code structure is dirty or obscured. This enables high scanning reliability on all mobile devices.
Our scanner is specifically configured to decode 2D QR codes. While some camera libraries can read traditional 1D barcodes, this tool focuses entirely on local QR code scanning for optimal speed and reliability.