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Every iPhone running iOS 11 or later has a built-in QR code reader in the Camera app. No third-party app is needed.
Most Android phones running Android 9 (Pie) or later support QR code scanning through the camera or Google Lens.
Desktop computers don't have a built-in QR scanner, but you can still decode QR codes easily using web-based tools.
You don't need a physical QR code in front of you. You can scan QR codes saved as images or screenshots on your device.
If your QR code isn't scanning, check for these common issues:
When you scan a QR code, your device's camera detects the pattern of black and white modules and decodes the data stored within. Most QR codes contain a URL, which your phone opens in a web browser. QR codes can also store plain text, contact information, Wi-Fi credentials, or app download links.
Want to understand the technology behind QR codes? Learn how QR codes work.
No. Most modern smartphones have built-in QR code scanning through the default camera app. iPhones running iOS 11 or later and Android phones running Android 9 or later can scan QR codes without installing any additional app.
Yes. You can upload a screenshot or saved image containing a QR code to a web-based scanner like Link2QR Scanner. On Android, you can also use Google Lens to scan QR codes from images in your photo gallery.
Common causes include poor lighting, the QR code being too small or too far away, a damaged or partially obscured code, low contrast between the code and its background, or an expired destination URL. Try improving lighting, moving closer, and cleaning your camera lens.
Yes. You can use a web-based QR code scanner like link2qr.com/scanner to scan codes using your laptop's webcam or by uploading an image of the QR code. No software installation is required.
Generally yes, but you should always verify the URL before entering any personal information. QR codes themselves are not dangerous, but they can link to malicious websites. Avoid scanning codes from untrusted sources and check the URL preview before tapping.
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