About the QR Code Generator
QR codes encode text, URLs, and structured payloads (WiFi credentials, vCards) into a matrix barcode any phone camera can read. This generator renders codes entirely in your browser — useful for sharing a WiFi network with guests, linking a physical runbook to a dashboard, or putting a join-URL on a slide.
Because generation is client-side, the content never touches a server — relevant when encoding WiFi passwords or internal URLs. Download the result as an image and it will keep scanning forever; QR codes are static data, not hosted redirects.
Frequently asked questions
Do QR codes expire or stop working?
A QR code itself never expires — it is just encoded data, like printed text. What expires is the thing it points to: if the URL inside goes dead, the code scans fine but leads nowhere. "Dynamic QR" services work by encoding a redirect URL they control, which is also how they track scans — and why those codes die when the subscription does.
How do WiFi QR codes work?
They encode a standard payload of the form WIFI:T:WPA;S:NetworkName;P:password;; which phone cameras recognize and offer to join. The password is stored in plain text inside the code, so share the printed code with the same care as the password itself.
What does QR error correction do?
QR codes embed Reed-Solomon redundancy at four levels — L (~7% recoverable), M (~15%), Q (~25%), H (~30%). Higher levels survive logos, damage, and bad printing but increase module density, making codes harder to scan from a distance. M is the practical default; use H when overlaying a logo.
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