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QR Code generator app

Usage

Use the qr console app to safely generate a QR code offline without relying on any external web services.

The root command encodes text as a QR code.

echo -n "foo" | qr --format svg > foo.svg

The wifi command produces a QR code that contains a WiFi login.

qr wifi $SSID --format png --output wifi.png

The app supports SVG and PNG output formats. Use -h or --help option to display a more detailed usage information.

Building the app

Use .NET SDK 8 to build the app. The native build toolchain is needed to publish the app for the given platform in the native AOT mode. See https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/ for more details.

  1. Navigate to src/qr folder.
  2. Execute dotnet build to build the app.
  3. Execute dotnet publish to publish the app. The fitting native build toolchain is needed.

Notes

I've created the app to be able to safely create a QR code containing WiFi credentials and to test the .NET AOT publish mode. Thus, the app is a command line application published as a single binary file that does not depend on external libraries.