QR Code Scanner

A QR code scanner reads the black-and-white pattern of a QR code and decodes it back into the text or URL it was built from, no phone required. This tool works two ways: upload an image that contains a QR code (a screenshot, a downloaded flyer, or a photo of a poster) or switch on your webcam for live scanning. Either way the decode runs entirely in your browser using the open-source qr-scanner library, so uploaded pictures and camera frames never leave your device. QR codes are designed to be forgiving. They carry built-in error correction, so the scanner can usually read a code despite rotation, mild skew, glare, or a small smudge, and it copes with non-standard foreground and background colors as long as there is enough contrast. Two practical limits are worth knowing. First, the tool returns the first QR code it finds in a given image, so for a sheet with several codes you should crop or upload them one at a time. Second, severely defaced, blurry, or very low-contrast codes can exceed the error correction budget and fail to decode at all, in which case a sharper capture is the fix. A common and genuinely useful workflow is safety previewing. Scanning a QR with your phone often opens the destination immediately, but here the decoded URL is shown as plain text first, so you can read exactly where a code in an email or on a sticker points before deciding whether to visit it. Results include a one-click copy button and an option to open decoded links in a new tab. Webcam mode needs an HTTPS page and your permission to use the camera.