I also encountered this problem. I came across it in GroupDocs.Viewer version 24.6.0 for .NET Framework 4.6.2. I upgraded to the latest version 24.9.0 and the problem still occurs. On some environments the folder grows h…...Combine(outputPath, "page_{0}.html")); IResourceStreamFacto...Combine(outputPath, "page_{0}/resource_{1}"), url + "/page_{0}/resource_{1}");...