AdSense & Privacy Policy Notice
This website does not collect or store user data. However, third-party services such as Google AdSense may use cookies for service operation and advertisement delivery.
100% Client-Side Barcode & QR Code Processing
Offline Barcode Reader functions entirely within your local web browser using WebAssembly (WASM) and JavaScript. Camera streams and uploaded image files are processed in real-time in local device memory and are never transmitted to any external server.
Google AdSense & Third-Party Cookies
This website does not collect or store user data. However, third-party services such as Google AdSense may use cookies for service operation and advertisement delivery. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites.
Camera Permissions & Hardware Access
Camera access is requested solely to render the live viewfinder for real-time barcode scanning. Camera frames are processed frame-by-frame in memory and immediately discarded. Camera access can be revoked at any time via your browser settings.
Local Storage & Preferences
Scan history and user preferences (such as light/dark mode and language settings) are stored strictly in your browser's local storage (LocalStorage). This data remains on your physical device and can be cleared at any time.