The Problem with Most QR Generators I was building a simple tool for my own use and needed to generate a QR code for a WiFi network. I tried the popular free tools, and they all did the same thing: They routed the QR code through their own server. They set an expiry date (7 days, 30 days, etc.
Source: [Dev.to](https://dev.to/saazone_studio/how-i-built-a-fully-client-side-qr-code-generator-and-why-i-avoided-a-backend-4oee)