In case of you have added the reference to the SautinSoft.PdfVision.dll by the old way (Solution Explorer->right click by "References"->Add Reference...), please add these (or newer versions) dependencies to your project or using NuGet Package Manager:

	<PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
	<PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
	<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
	<PackageReference Include="PuppeteerSharp" Version="20.1.3" />
	<PackageReference Include="SkiaSharp" Version="2.88.8" />
	<PackageReference Include="System.Net.Http" Version="4.3.4" />
	<PackageReference Include="System.Text.Json" Version="8.0.5" />
	
For example, to add "System.Text.Json, 8.0.5:
(Solution Explorer->right click by "References"->Manage Nuget Packages...->In the tab "Browse" type "System.Text.Json" and find the "System.Text.Json", select version "8.0.5").

Detailed steps: 
Windows https://sautinsoft.com/products/pdf-vision/help/net/getting-started/windows.php
Linux https://sautinsoft.com/products/pdf-vision/help/net/getting-started/using-in-linux.php
MacOs https://sautinsoft.com/products/pdf-vision/help/net/getting-started/mac-os.php

If you will have any questions, please don't hesitate to email us at: support@sautinsoft.com!