Worked example
Decode a QR code from a poster screenshot to inspect its URL. Check the domain spelling before opening unfamiliar or suspicious links.
Understanding settings and results
- Clear, front-facing QR codes with all four corners visible are easiest to read.
- The tool uses browser-side jsQR to read image pixels.
Scope and limitations
- Does not recognize barcodes, ordinary text or heavily obscured QR codes.
- A decoded URL is not endorsed or verified by this site.
Troubleshooting
- Crop unrelated backgrounds, improve contrast and take a new screenshot if recognition fails.
- Enlarge very small codes if necessary, but avoid filters that blur edges.
Privacy and processing
Images are read and decoded in the browser only and are not uploaded to this site.