Use an immutable collection or reduce the accessibility of the non-private readonly field 'SupportedImageFormats'. (https://rules.sonarsource.com/csharp/RSPEC-3887)

Use an immutable collection or reduce the accessibility of the public static field 'SupportedImageFormats'. (https://rules.sonarsource.com/csharp/RSPEC-2386)

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Remove this commented out code. (https://rules.sonarsource.com/csharp/RSPEC-125)

Remove this commented out code. (https://rules.sonarsource.com/csharp/RSPEC-125)

Non-constant fields should not be visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2211)

Make this field 'private' and encapsulate it in a 'public' property. (https://rules.sonarsource.com/csharp/RSPEC-1104)

Change the visibility of 'Preference' or make it 'const' or 'readonly'. (https://rules.sonarsource.com/csharp/RSPEC-2223)

Non-constant fields should not be visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2211)