QR Code Scanner
Scan QR codes instantly using your device's camera or upload an image. Free online QR code reader that works on all devices.
Camera Scanner
Click "Start Camera" to begin scanning
Upload QR Code Image
Drag and drop an image here, or click to select
Scan Result
About QR Code Scanning
What are QR Codes?
QR (Quick Response) codes are two-dimensional barcodes that can store various types of information including text, URLs, contact information, WiFi credentials, and more. They were invented in 1994 by Denso Wave for tracking automotive parts.
How QR Code Scanning Works
QR code scanners use image recognition technology to detect the three square finder patterns in the corners of the code, then decode the data stored in the black and white modules. Our scanner works in real-time using your device's camera.
QR Code Structure
QR codes include built-in error correction, allowing them to be read even when partially damaged or obscured. They can store up to 4,296 alphanumeric characters or 7,089 numeric characters.
Scanning Tips
- Good Lighting: Ensure adequate lighting for clear image capture
- Steady Hold: Keep your device steady while scanning
- Proper Distance: Hold the camera 6-12 inches from the QR code
- Clean Lens: Make sure your camera lens is clean
- Flat Surface: QR codes scan better when flat and not curved
Common QR Code Types
| Type | Description | Example Use | Data Format |
|---|---|---|---|
| URL | Website links | Marketing, menus | https://example.com |
| Text | Plain text content | Messages, instructions | Hello World! |
| Email addresses | Contact sharing | mailto:[email protected] | |
| Phone | Phone numbers | Quick dialing | tel:+1234567890 |
| SMS | Text messages | Pre-filled texts | sms:+1234567890 |
| WiFi | Network credentials | Guest access | WIFI:T:WPA;S:NetworkName;P:password;; |
| vCard | Contact information | Business cards | BEGIN:VCARD... |
| Location | GPS coordinates | Maps, directions | geo:40.7128,-74.0060 |
Frequently Asked Questions
Is it safe to scan QR codes?
Generally yes, but be cautious with unknown QR codes. Our scanner shows you the content before you take any action, so you can verify URLs and other data before proceeding.
Why won't my QR code scan?
Common issues include poor lighting, camera focus problems, damaged QR codes, or insufficient contrast. Try improving lighting, cleaning your camera lens, or getting closer to the code.
Can I scan QR codes from images?
Yes! Our scanner supports both live camera scanning and image uploads. You can upload photos containing QR codes from your device's gallery.