PDFsharp & MigraDoc Foundation

Library.csproj
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net481;net6.0</TargetFrameworks>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="PDFsharp-MigraDoc" Version="6.1.0" />
  </ItemGroup>
</Project>

WebApp.csproj
<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>
  ...
  <ItemGroup>
    <ProjectReference Include="..\Library\Library.csproj" />
  </ItemGroup>

  <ItemGroup>
    <Content Include="Resources\*.*">
        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
</Project>

Code to Build and generate file to be returned to client

public Document BuildDocument() {
   Document document = new Document();
   document.UseCmykColor = true;
   Section section = document.AddSection();
   section.PageSetup = document.DefaultPageSetup.Clone();
   float pageWidth = (float)(section.PageSetup.PageWidth.Inch - section.PageSetup.LeftMargin.Inch - section.PageSetup.RightMargin.Inch);

   section.AddParagraph().AddFormattedText("Hello World", _largeFont);
   var image = section.AddParagraph().AddImage("Resources/google-logo-0.png");
   section.AddParagraph().AddImage("Resources/RedSquare.png");
   image.Height = 100.0f;
   section.AddParagraph().AddText("after square");
   return document;
}

public byte[] CreateDocument() {
   PdfDocumentRenderer renderer = new PdfDocumentRenderer();
   renderer.Document = document;
   renderer.PdfDocument = new PdfSharp.Pdf.PdfDocument();
   renderer.PdfDocument.Options.CompressContentStreams = false;
   renderer.RenderDocument();

   byte[] reportBytes;
   using (MemoryStream ms = new MemoryStream())
   {
      renderer.Save(ms, false);
      reportBytes = new byte[ms.Length];
      ms.Read(reportBytes, 0, (int)ms.Length);
   }
   return reportBytes;
}