A standard QR code can hold up to ~4,296 alphanumeric characters or ~2,953 bytes. Longer content results in denser QR codes that may be harder to scan.
You can encode any text or URL. Common uses include website links, Wi-Fi credentials, plain text, and contact information.
Yes. The QR code is generated entirely in your browser using the qrcode.js library. No data is sent to any server.