GeneratorsLesson 47Free preview
QR Code Scanner
This lesson is part of Web Developer Tools · All levels
Summary
QR Code Scanner reads a QR image and then decodes the contents into text, URL, or other data formats. The camera can be used directly, or you upload an existing image file. The scan results should be checked before opening, especially if they contain links, as QR can lead to malicious sites. The corrupted code may still be readable thanks to error correction, but image quality remains influential.
Key points
- Decode the contents of a QR code from an image or camera
- The payload can be text, URL, vCard, or WiFi configuration
- Check the link address before opening it
- Error correction helps to read a slightly corrupted code
- Blurred or cut images can cause scanning failure
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