HtmlSanitizer by Michael Ganss

<PackageReference Include="HtmlSanitizer" Version="7.1.512" />

.NET API 49,152 bytes

 RemoveReason

public enum RemoveReason
List of reasons why something was identified to get removed from the HTML
ClassAttributeEmpty = 6

The class attribute is empty

NotAllowedAttribute = 1

Attribute is not allowed

NotAllowedCssClass = 5

CSS Class is not allowed

NotAllowedStyle = 2

Style is not allowed

NotAllowedTag = 0

Tag is not allowed

NotAllowedUrlValue = 3

Value is a non-allowed or harmful url

NotAllowedValue = 4

Value is not allowed or harmful

StyleAttributeEmpty = 7

The style attribute is empty