Limitations Because of the lack of Windows Fonts in target OS (Android, macOS, Linux, etc), Fonts used in documents are substituted with available Fonts, this might lead to inaccurate document layout when rendering the document to PNG, JPG, and PDF. If GroupDocs.Watermark for .NET Standard is intended to be used in a Linux environment, an additional NuGet package should be referenced to make it work correctly with graphics: SkiaSharp.NativeAssets.Linux for Ubuntu (it also should work on most Debian-based Linux distributions) or Goelze....Windows fonts in target OS (Android, macOS, Linux, etc), fonts used...documents are substituted with available fonts, this might lead...