Scan and decode QR codes online using your camera, uploaded image file, or screenshot with 100% private client-side processing.
Scan and read QR codes online using your camera, image file, or screenshot. Decode URLs, Wi-Fi credentials, contact cards (vCards), text, and emails privately in your browser.
Camera permissions will be requested by your browser. Video frames are decoded locally.
QR codes (Quick Response codes) are 2-dimensional matrix barcodes capable of storing URLs, plaintext, Wi-Fi authentication keys, vCard contact details, and cryptographic tokens in black and white square modules.
Scan QR codes directly using your smartphone camera or desktop webcam, or upload saved image screenshots (PNG, JPG, WebP). Automated image preprocessing contrast adjustments ensure instant decoding.
Scanning QR codes with our tool displays the raw decoded text or target destination URL before you open the link. This prevents malicious QR code phishing (Qishing) attacks.
QR codes feature built-in Reed-Solomon error correction (L, M, Q, H). This allows codes to be decoded accurately even if up to 30% of the QR matrix surface is smudged, torn, or covered by logos.
All canvas pixel sampling and QR matrix extraction take place 100% locally inside your web browser memory. No camera frames or uploaded images are sent to cloud servers.
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Quick answers about how this tool works.
Plain-language explainers that sit next to this tool.
Compare barcode scanning hardware: Learn how red laser diode reflections and CCD image sensors decode 1D linear barcode lines and check digits.
Master QR codes: Learn the exact differences between static and dynamic QR codes, Reed-Solomon error correction levels (L, M, Q, H), and data capacity limits.
Understand barcode standards: Compare 1D linear symbologies (Code 128, UPC-A, EAN-13) against 2D matrix barcodes, and learn how check digits work.
Deconstruct QR scanning algorithms: Learn how camera image binarization, thresholding, position finder patterns, and alignment grids decode QR matrices.
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