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PdfVisionConvertHtmlToPdf(String, HtmlToPdfOptions) Method

Convert HTML document to PDF document in memory.

Namespace: SautinSoft.PdfVision
Assembly: SautinSoft.PdfVision (in SautinSoft.PdfVision.dll) Version: 2024.12.6
Syntax
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public byte[] ConvertHtmlToPdf(
	string inputHtml,
	HtmlToPdfOptions options = null
)

Parameters

inputHtml  String
HTML document. Can be: HTML string, URL or full path to the .html file.
options  HtmlToPdfOptions  (Optional)
HTML to PDF conversion options: Scale, Page Size, Orientation, Header, Footer and so forth.

Return Value

Byte
PDF document as bytes array.
Example
How to convert HTML to PDF in memory using C#
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using System;
using System.IO;
using SautinSoft.PdfVision;

namespace Sample
{
    class Program
    {
        static void Main(string[] args)
        {
            ConvertHtmlToPdfInMemory();
        }
        public static void ConvertHtmlToPdfInMemory()
        {
            // Before starting, we recommend to get a free 100-day key:
            // https://sautinsoft.com/start-for-free/

            // Apply the key here:
            // SautinSoft.PdfVision.SetLicense("...");

            // This string will contains HTML string with the local image.
            string inpHtml = "<html>\r\n<body>\r\n<p> Hello </p>\r\n<p><img src=\"sautinsoft.png\"/></p>\r\n<p>Bye </p>\r\n</body>\r\n</html>";
            byte[] pdfBytes = null;

            PdfVision v = new PdfVision();

            HtmlToPdfOptions options = new HtmlToPdfOptions()
            {
                // The baseURL property specifies or retrieves the base URL used for
                // relative path resolution with URL script commands that are embedded in media items.
                // Website - http://example.com/ or http://example.com/contact
                // LocalPath - C:/example/ or C:/example/contact
                BaseUrl = @"https://sautinsoft.com/images/",

                PageSetup = new PageSetup()
                {
                    PaperType = PaperType.Letter,
                    Orientation = Orientation.Landscape,
                    PageMargins = new PageMargins()
                    {
                        Left = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        Top = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        Right = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        Bottom = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter)
                    }
                },
                PrintBackground = true,
                Scale = 0.7M,
                //Set a custom directory where will be placed portable Chromium browser. 
                //Default value depends of platform (win-x64, win-86, linux-x64 or osx-x64). 
                ChromiumBaseDirectory = Path.GetFullPath(@"..\..\..\..\..\..\Chromium\")                
            };

            try
            {
                // The whole conversion process will be done completely in memory.
                pdfBytes = v.ConvertHtmlToPdf(inpHtml, options);

                // This file is necessary only to show the result.
                string outFile = new FileInfo("Result.pdf").FullName;
                // Save pdfBytes to the file and open the result for demonstration purposes.
                File.WriteAllBytes(outFile, pdfBytes);
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error: {ex.Message}");
                Console.ReadLine();
            }
        }
    }
}
How to convert HTML to PDF in memory using VB.Net
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Imports Microsoft.VisualBasic
Imports System
Imports System.IO
Imports SautinSoft.PdfVision

Namespace Sample
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            ConvertHtmlToPdfInMemory()
        End Sub
        Public Shared Sub ConvertHtmlToPdfInMemory()
            ' This string will contains HTML string with the local image.
            Dim inpHtml As String = "<html>" & vbCrLf & "<body>" & vbCrLf & "<p> Hello </p>" & vbCrLf & "<p><img src=""sautinsoft.png""/></p>" & vbCrLf & "<p>Bye </p>" & vbCrLf & "</body>" & vbCrLf & "</html>"
            Dim pdfBytes() As Byte = Nothing
            ' Before starting, we recommend to get a free 100-day key:
            ' https://sautinsoft.com/start-for-free/

            ' Apply the key here:
            ' SautinSoft.PdfVision.SetLicense("...");

            Dim v As New PdfVision()


            ' The baseURL property specifies Or retrieves the base URL used for
            ' relative path resolution with URL script commands that are embedded in media items.
            ' Website - http://example.com/ Or http://example.com/contact
            ' LocalPath - C:/example/ Or C:/example/contact

            Dim options As New HtmlToPdfOptions() With {
                .BaseUrl = "https://sautinsoft.com/images/",
                .PageSetup = New PageSetup() With {
                    .PaperType = PaperType.Letter,
                    .Orientation = Orientation.Landscape,
                    .PageMargins = New PageMargins() With {
                        .Left = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        .Top = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        .Right = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter),
                        .Bottom = LengthUnitConverter.ToPoint(5, LengthUnit.Millimeter)
                    }
                },
                .PrintBackground = True,
                .Scale = 0.7D,
                .ChromiumBaseDirectory = Path.GetFullPath("..\..\..\..\..\..\Chromium\")
            }

            Try
                ' The whole conversion process will be done completely in memory.
                pdfBytes = v.ConvertHtmlToPdf(inpHtml, options)

                ' This file is necessary only to show the result.
                Dim outFile As String = (New FileInfo("Result.pdf")).FullName
                ' Save pdfBytes to the file and open the result for demonstration purposes.
                File.WriteAllBytes(outFile, pdfBytes)
                System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
            Catch ex As Exception
                Console.WriteLine($"Error: {ex.Message}")
                Console.ReadLine()
            End Try
        End Sub
    End Class
End Namespace
See Also