PM> Install-Package Spire.PDF 

using Spire.Pdf.Graphics;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    
    namespace ConvertUrlToPdf
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Specify the URL path
                string url = "https://www.wikipedia.org/";
    
                //Specify the output file path
                string fileName = "UrlToPdf.pdf";
    
                //Specify the plugin path
                 string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set the plugin path
                 HtmlConverter.PluginPath = pluginPath;
    
                //Convert URL to PDF
                HtmlConverter.Convert(url, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0));
            }
        }
    }

Imports Spire.Pdf.Graphics
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    
    Namespace ConvertUrlToPdf
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Specify the URL path
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Specify the output file path
                Dim fileName As String =  "UrlToPdf.pdf"
    
                'Specify the plugin path
                 Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set the plugin path
                 HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(url, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0))
            End Sub
        End Class
    End Namespace

using System.IO;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    using Spire.Pdf.Graphics;
    
    namespace ConvertHtmlStringToPdfWithPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Get the HTML string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Specify the output file path
                string fileName = "HtmlStringToPdf.pdf";
    
                //Specify the plugin path
                string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set plugin path
                HtmlConverter.PluginPath = pluginPath;
    
                //Convert HTML string to PDF
                HtmlConverter.Convert(htmlString, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode);
            }
        }
    }

Imports System.IO
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    Imports Spire.Pdf.Graphics
    
    Namespace ConvertHtmlStringToPdfWithPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Get the HTML string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Specify the output file path
                Dim fileName As String =  "HtmlStringToPdf.pdf"
    
                'Specify the plugin path
                Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set plugin path
                HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(htmlString, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode)
            End Sub
        End Class
    End Namespace

using System;
    using Spire.Pdf;
    using System.Threading;
    using Spire.Pdf.HtmlConverter;
    using System.Drawing;
    
    namespace ConverUrlToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Specific the URL path to convert
                String url = "https://www.wikipedia.org/";
    
                //Load HTML from a URL path using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(url, true, true, false, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf");
                doc.Close();
            }
        }
    }

Imports System
    Imports Spire.Pdf
    Imports System.Threading
    Imports Spire.Pdf.HtmlConverter
    Imports System.Drawing
    
    Namespace ConverUrlToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Specific the URL path to convert
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Load HTML from a URL path using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(url, True, True, False, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf")
                doc.Close()
            End Sub
        End Class
    End Namespace

using Spire.Pdf;
    using Spire.Pdf.HtmlConverter;
    using System.IO;
    using System.Threading;
    using System.Drawing;
    
    namespace ConvertHtmlStringToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Read html string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Load HTML from html string using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(htmlString, true, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf");
            }
        }
    }

Imports Spire.Pdf
    Imports Spire.Pdf.HtmlConverter
    Imports System.IO
    Imports System.Threading
    Imports System.Drawing
    
    Namespace ConvertHtmlStringToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Read html string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Load HTML from html string using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(htmlString, True, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf")
            End Sub
        End Class
    End Namespace
    

PM> Install-Package Spire.PDF 

using Spire.Pdf.Graphics;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    
    namespace ConvertUrlToPdf
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Specify the URL path
                string url = "https://www.wikipedia.org/";
    
                //Specify the output file path
                string fileName = "UrlToPdf.pdf";
    
                //Specify the plugin path
                 string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set the plugin path
                 HtmlConverter.PluginPath = pluginPath;
    
                //Convert URL to PDF
                HtmlConverter.Convert(url, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0));
            }
        }
    }

Imports Spire.Pdf.Graphics
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    
    Namespace ConvertUrlToPdf
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Specify the URL path
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Specify the output file path
                Dim fileName As String =  "UrlToPdf.pdf"
    
                'Specify the plugin path
                 Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set the plugin path
                 HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(url, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0))
            End Sub
        End Class
    End Namespace

using System.IO;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    using Spire.Pdf.Graphics;
    
    namespace ConvertHtmlStringToPdfWithPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Get the HTML string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Specify the output file path
                string fileName = "HtmlStringToPdf.pdf";
    
                //Specify the plugin path
                string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set plugin path
                HtmlConverter.PluginPath = pluginPath;
    
                //Convert HTML string to PDF
                HtmlConverter.Convert(htmlString, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode);
            }
        }
    }

Imports System.IO
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    Imports Spire.Pdf.Graphics
    
    Namespace ConvertHtmlStringToPdfWithPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Get the HTML string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Specify the output file path
                Dim fileName As String =  "HtmlStringToPdf.pdf"
    
                'Specify the plugin path
                Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set plugin path
                HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(htmlString, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode)
            End Sub
        End Class
    End Namespace

using System;
    using Spire.Pdf;
    using System.Threading;
    using Spire.Pdf.HtmlConverter;
    using System.Drawing;
    
    namespace ConverUrlToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Specific the URL path to convert
                String url = "https://www.wikipedia.org/";
    
                //Load HTML from a URL path using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(url, true, true, false, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf");
                doc.Close();
            }
        }
    }

Imports System
    Imports Spire.Pdf
    Imports System.Threading
    Imports Spire.Pdf.HtmlConverter
    Imports System.Drawing
    
    Namespace ConverUrlToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Specific the URL path to convert
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Load HTML from a URL path using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(url, True, True, False, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf")
                doc.Close()
            End Sub
        End Class
    End Namespace

using Spire.Pdf;
    using Spire.Pdf.HtmlConverter;
    using System.IO;
    using System.Threading;
    using System.Drawing;
    
    namespace ConvertHtmlStringToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Read html string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Load HTML from html string using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(htmlString, true, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf");
            }
        }
    }

Imports Spire.Pdf
    Imports Spire.Pdf.HtmlConverter
    Imports System.IO
    Imports System.Threading
    Imports System.Drawing
    
    Namespace ConvertHtmlStringToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Read html string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Load HTML from html string using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(htmlString, True, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf")
            End Sub
        End Class
    End Namespace
    

PM> Install-Package Spire.PDF 

using Spire.Pdf.Graphics;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    
    namespace ConvertUrlToPdf
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Specify the URL path
                string url = "https://www.wikipedia.org/";
    
                //Specify the output file path
                string fileName = "UrlToPdf.pdf";
    
                //Specify the plugin path
                 string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set the plugin path
                 HtmlConverter.PluginPath = pluginPath;
    
                //Convert URL to PDF
                HtmlConverter.Convert(url, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0));
            }
        }
    }

Imports Spire.Pdf.Graphics
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    
    Namespace ConvertUrlToPdf
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Specify the URL path
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Specify the output file path
                Dim fileName As String =  "UrlToPdf.pdf"
    
                'Specify the plugin path
                 Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set the plugin path
                 HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(url, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0))
            End Sub
        End Class
    End Namespace

using System.IO;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    using Spire.Pdf.Graphics;
    
    namespace ConvertHtmlStringToPdfWithPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Get the HTML string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Specify the output file path
                string fileName = "HtmlStringToPdf.pdf";
    
                //Specify the plugin path
                string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set plugin path
                HtmlConverter.PluginPath = pluginPath;
    
                //Convert HTML string to PDF
                HtmlConverter.Convert(htmlString, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode);
            }
        }
    }

Imports System.IO
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    Imports Spire.Pdf.Graphics
    
    Namespace ConvertHtmlStringToPdfWithPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Get the HTML string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Specify the output file path
                Dim fileName As String =  "HtmlStringToPdf.pdf"
    
                'Specify the plugin path
                Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set plugin path
                HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(htmlString, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode)
            End Sub
        End Class
    End Namespace

using System;
    using Spire.Pdf;
    using System.Threading;
    using Spire.Pdf.HtmlConverter;
    using System.Drawing;
    
    namespace ConverUrlToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Specific the URL path to convert
                String url = "https://www.wikipedia.org/";
    
                //Load HTML from a URL path using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(url, true, true, false, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf");
                doc.Close();
            }
        }
    }

Imports System
    Imports Spire.Pdf
    Imports System.Threading
    Imports Spire.Pdf.HtmlConverter
    Imports System.Drawing
    
    Namespace ConverUrlToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Specific the URL path to convert
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Load HTML from a URL path using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(url, True, True, False, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf")
                doc.Close()
            End Sub
        End Class
    End Namespace

using Spire.Pdf;
    using Spire.Pdf.HtmlConverter;
    using System.IO;
    using System.Threading;
    using System.Drawing;
    
    namespace ConvertHtmlStringToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Read html string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Load HTML from html string using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(htmlString, true, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf");
            }
        }
    }

Imports Spire.Pdf
    Imports Spire.Pdf.HtmlConverter
    Imports System.IO
    Imports System.Threading
    Imports System.Drawing
    
    Namespace ConvertHtmlStringToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Read html string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Load HTML from html string using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(htmlString, True, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf")
            End Sub
        End Class
    End Namespace
    

PM> Install-Package Spire.PDF 

using Spire.Pdf.Graphics;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    
    namespace ConvertUrlToPdf
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Specify the URL path
                string url = "https://www.wikipedia.org/";
    
                //Specify the output file path
                string fileName = "UrlToPdf.pdf";
    
                //Specify the plugin path
                 string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set the plugin path
                 HtmlConverter.PluginPath = pluginPath;
    
                //Convert URL to PDF
                HtmlConverter.Convert(url, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0));
            }
        }
    }

Imports Spire.Pdf.Graphics
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    
    Namespace ConvertUrlToPdf
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Specify the URL path
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Specify the output file path
                Dim fileName As String =  "UrlToPdf.pdf"
    
                'Specify the plugin path
                 Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set the plugin path
                 HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(url, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0))
            End Sub
        End Class
    End Namespace

using System.IO;
    using Spire.Pdf.HtmlConverter.Qt;
    using System.Drawing;
    using Spire.Pdf.Graphics;
    
    namespace ConvertHtmlStringToPdfWithPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Get the HTML string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Specify the output file path
                string fileName = "HtmlStringToPdf.pdf";
    
                //Specify the plugin path
                string pluginPath = "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins";
    
                //Set plugin path
                HtmlConverter.PluginPath = pluginPath;
    
                //Convert HTML string to PDF
                HtmlConverter.Convert(htmlString, fileName, true, 100000, new Size(1080, 1000), new PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode);
            }
        }
    }

Imports System.IO
    Imports Spire.Pdf.HtmlConverter.Qt
    Imports System.Drawing
    Imports Spire.Pdf.Graphics
    
    Namespace ConvertHtmlStringToPdfWithPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Get the HTML string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Specify the output file path
                Dim fileName As String =  "HtmlStringToPdf.pdf"
    
                'Specify the plugin path
                Dim pluginPath As String =  "F:\\Libraries\\Plugin\\plugins-windows-x64\\plugins"
    
                'Set plugin path
                HtmlConverter.PluginPath = pluginPath
    
                'Convert URL to PDF
                HtmlConverter.Convert(htmlString, fileName, True, 100000, New Size(1080, 1000), New PdfMargins(0), Spire.Pdf.HtmlConverter.LoadHtmlType.SourceCode)
            End Sub
        End Class
    End Namespace

using System;
    using Spire.Pdf;
    using System.Threading;
    using Spire.Pdf.HtmlConverter;
    using System.Drawing;
    
    namespace ConverUrlToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Specific the URL path to convert
                String url = "https://www.wikipedia.org/";
    
                //Load HTML from a URL path using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(url, true, true, false, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf");
                doc.Close();
            }
        }
    }

Imports System
    Imports Spire.Pdf
    Imports System.Threading
    Imports Spire.Pdf.HtmlConverter
    Imports System.Drawing
    
    Namespace ConverUrlToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Specific the URL path to convert
                Dim url As String =  "https://www.wikipedia.org/"
    
                'Load HTML from a URL path using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(url, True, True, False, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save the document to a PDF file
                doc.SaveToFile("UrlToPdf.pdf")
                doc.Close()
            End Sub
        End Class
    End Namespace

using Spire.Pdf;
    using Spire.Pdf.HtmlConverter;
    using System.IO;
    using System.Threading;
    using System.Drawing;
    
    namespace ConvertHtmlStringToPdfWithoutPlugin
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument object
                PdfDocument doc = new PdfDocument();
    
                //Create a PdfPageSettings object
                PdfPageSettings setting = new PdfPageSettings();
    
                //Save page size and margins through the object
                setting.Size = new SizeF(1000, 1000);
                setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);
    
                //Create a PdfHtmlLayoutFormat object
                PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
    
                //Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = true;
    
                //Read html string from a .html file
                string htmlString = File.ReadAllText(@"C:\Users\Administrator\Desktop\Document\Html\Sample.html");
    
                //Load HTML from html string using LoadFromHTML method
                Thread thread = new Thread(() =>
                { doc.LoadFromHTML(htmlString, true, setting, htmlLayoutFormat); });
                thread.SetApartmentState(ApartmentState.STA);
                thread.Start();
                thread.Join();
    
                //Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf");
            }
        }
    }

Imports Spire.Pdf
    Imports Spire.Pdf.HtmlConverter
    Imports System.IO
    Imports System.Threading
    Imports System.Drawing
    
    Namespace ConvertHtmlStringToPdfWithoutPlugin
        Class Program
            Shared  Sub Main(ByVal args() As String)
                'Create a PdfDocument object
                Dim doc As PdfDocument =  New PdfDocument()
    
                'Create a PdfPageSettings object
                Dim setting As PdfPageSettings =  New PdfPageSettings()
    
                'Save page size and margins through the object
                setting.Size = New SizeF(1000, 1000)
                setting.Margins = New Spire.Pdf.Graphics.PdfMargins(20)
    
                'Create a PdfHtmlLayoutFormat object
                Dim htmlLayoutFormat As PdfHtmlLayoutFormat =  New PdfHtmlLayoutFormat()
    
                'Set IsWaiting property to true
                htmlLayoutFormat.IsWaiting = True
    
                'Read html string from a .html file
                Dim htmlString As String =  File.ReadAllText("C:\Users\Administrator\Desktop\Document\Html\Sample.html")
    
                'Load HTML from html string using LoadFromHTML method
                Thread thread = New Thread(() =>
                {
                     doc.LoadFromHTML(htmlString, True, setting, htmlLayoutFormat)
                }
    )
                thread.SetApartmentState(ApartmentState.STA)
                thread.Start()
                thread.Join()
    
                'Save to a PDF file
                doc.SaveToFile("HtmlStringToPdf.pdf")
            End Sub
        End Class
    End Namespace
    

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace

PM> Install-Package Spire.PDF

using Spire.Pdf;
    
    namespace PDFtoPowerPoint
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Create a PdfDocument instance
                PdfDocument pdf = new PdfDocument();
    
                //Load a sample PDF document
                pdf.LoadFromFile(@"C:\Users\Administrator\Desktop\Sample.pdf");
    
                //Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX);
            }
        }
    }

Imports Spire.Pdf
    
    Namespace PDFtoPowerPoint
        Class Program
            Private Shared Sub Main(ByVal args() As String)
                'Create a PdfDocument instance
                Dim pdf As PdfDocument = New PdfDocument
    
                'Load a sample PDF document
                pdf.LoadFromFile("C:\Users\Administrator\Desktop\Sample.pdf")
    
                'Convert the PDF to PPTX document
                pdf.SaveToFile("ConvertPDFtoPowerPoint.pptx", FileFormat.PPTX)
            End Sub
        End Class
    End Namespace