QR Code Scanner
Scan and decode QR codes from image files, screenshots, or clipboard pastes — completely offline and private.
Drag & Drop QR Image Here
or click to browse your files, or press Ctrl+V to paste a screenshot
Decoded Result
Waiting for image...
Upload an image or paste a screenshot to extract data.
How Image QR Decoding Works
DailyUtils uses high-performance computer vision algorithms to locate and extract 2D matrix symbology directly inside browser memory:
Finder Pattern Alignment
The decoder scans pixels for the signature 1:1:3:1:1 module ratio found in the three corner position squares. This enables accurate rotation and perspective correction even on angled photographs.
Reed-Solomon Error Correction
If the image has glare, scuffs, or slight motion blur, Reed-Solomon polynomial math reconstructs missing or damaged bytes up to the code's ECC threshold (up to 30%).
Instant Clipboard Paste
Take a screenshot with Windows + Shift + S or Cmd + Shift + 4, switch to this tab, and press Ctrl + V. The screenshot is decoded in milliseconds without saving a file.
Total Privacy Safeguard
Unlike cloud-based scanner services that upload your sensitive screenshots or private Wi-Fi codes to third-party servers, all processing is strictly client-side.
Frequently Asked Questions
How do I scan a QR code from an image or screenshot?
Drop your image file onto this page, click "Select Image File", or press Ctrl+V to paste a screenshot directly from your clipboard.
Can I scan a QR code using my laptop webcam or phone camera?
Yes. Click "Use Live Camera" to enable real-time camera scanning directly in your browser.
Are my images or private passwords uploaded anywhere?
No. All recognition executes locally in your browser using client-side JavaScript. No images or text are sent across the network.
Why is my QR code not scanning?
Make sure the image is in focus, the three corner positioning squares are clearly visible, and there is sufficient contrast between the dots and background.
What types of content can this scanner read?
It automatically detects and parses website URLs, Wi-Fi networks, vCard business cards, email addresses, phone numbers, and plain text.