QR Code Generator & Reader

Wi-Fi QR code

Build WIFI:T:WPA;S:…;P:…;; payloads with exact escaping/round trip for Chinese SSIDs and special-character passwords; passwords are never persisted.

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Inputs and parameters

• ssid — SSID (Unicode supported)
• security — Security
• password — Password (never saved, never in URL/analytics)
• hidden — Hidden network (H:true)
• size — Size (px)
• margin — Quiet zone (≥4 modules)
• errorCorrectionLevel — Error correction
• format — Export format plan
• foreground — Foreground
• background — Background

Real example

ssid=Cafe Wi-Fi;VIP · security=WPA · password=p;:,a\b⏎line2 · hidden=true
→ WIFI:T:WPA;S:Cafe Wi-Fi\;VIP;P:p\;\:\,a\\b\nline2;H:true;; → parses back to the exact SSID and password; plan qr-wifi-<timestamp>.png (512px, quiet zone 4, M). The password is never in any URL/analytics/draft.

Limits and failure handling

Controlled payload + export plan only; no real encoder or scanner client, so Chinese SSID connections on devices and H:true compatibility are untested. Open networks reject passwords.

FAQ