Mime-Detective (nuget): The ultimate file-extension & mime-type library with over 14,000+ signatures.  Quickly detect extensions & mime types from a stream or byte array using magic numbers (file headers) and magic words.  A default signature library is included and can be expanded using Mime-Detective.Definitions.Condensed (common signatures) or Mime-Detective.Definitions.Exhaustive (14,000+ signatures).
Keywords: Magic|Numbers|Words|File|Format|Media|Header|Signature|Type|Detection|Map|Convert|Extension|Mime