How to Scan a QR Code on a Laptop, PC, or Mac

Scanning a QR code on a mobile device is simple, but what if you need to scan one using your laptop, desktop computer, or Macbook?

Whether you want to scan a QR code using your laptop’s built-in webcam or decode a QR code that is already displayed on your screen, you can do it easily without installing any software or apps.

Here is the complete guide to scanning QR codes on PC, Windows, and Mac using ScanApp.org.

Method 1: Scan Using Your Laptop Webcam

If you have a physical QR code (on a phone screen, piece of paper, product packaging, or business card), you can scan it using your webcam:

  1. Visit ScanApp.org in any browser (Chrome, Edge, Safari, or Firefox).
  2. Click the “Request Camera Permission” button.
  3. When the browser asks for permission to use your camera, click “Allow”.
  4. Hold the QR code up to your laptop’s camera.
  5. The site will instantly scan and decode the code, showing you the result.

Method 2: Scan a QR Code on Your Screen (Without a Camera)

If you are looking at a QR code on a webpage, document, or email on your computer screen:

  1. Capture the QR Code:
    • On Windows: Press Windows Key + Shift + S to take a snip/screenshot of the QR code.
    • On Mac: Press Command + Shift + 4 and drag the crosshairs over the QR code to save a screenshot to your desktop.
  2. Go to ScanApp.org.
  3. Click the “Scan Image File” icon or area.
  4. Drag and drop your screenshot into the browser, or click to upload it from your computer.
  5. ScanApp will read the image and decode the QR code instantly.

Troubleshooting Webcam Issues on PC & Mac

  • Camera blocked by browser: If the camera isn’t turning on, look for the camera icon in your browser’s address bar (on the right-hand side in Chrome/Edge, or left-side in Safari) and change the permission to “Always Allow”.
  • Camera used by another app: Ensure other applications like Zoom, Microsoft Teams, or Skype are closed, as they can lock the webcam and prevent the browser from accessing it.
  • Mac System Permissions: On macOS, you may also need to grant your browser camera permissions in System Settings > Privacy & Security > Camera.