How to set jpeg quality of images in HTML
using C# and VB.NET


Complete code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using SautinSoft.RtfToHtml;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            SetJpegQuality();
        }
        /// <summary>
        /// How to set jpeg quality.
        /// </summary>
        static void SetJpegQuality()
        {
            string inpFile = @"..\..\..\..\example.docx";
            string outFile = Path.GetFullPath(@"Result.html");
            string imgDir = Path.GetDirectoryName(outFile);

            RtfToHtml r = new RtfToHtml();

            // 1. Set JPEG format and quality.
            HtmlFixedSaveOptions opt = new HtmlFixedSaveOptions()
            {
                ImagesDirectoryPath = Path.Combine(imgDir, "Result_images"),
                ImagesDirectorySrcPath = "Result_images",
                // Change to store images as physical files on local drive.
                EmbedImages = false,
                ImagesFormat = HtmlSaveOptions.EmbImagesFormat.Jpeg,
                JpegQuality = 50,
                Title = "JPEG images, 50% quality"
            };
            try
            {
                r.Convert(inpFile, outFile, opt);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Conversion failed! {ex.Message}");
            }

            // Open the result.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
        }
    }
}

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            Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.IO
Imports SautinSoft.RtfToHtml

Namespace Example
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			SetJpegQuality()
		End Sub
		''' <summary>
		''' How to set jpeg quality.
		''' </summary>
		Private Shared Sub SetJpegQuality()
			Dim inpFile As String = "..\..\..\..\example.docx"
			Dim outFile As String = Path.GetFullPath("Result.html")
			Dim imgDir As String = Path.GetDirectoryName(outFile)

			Dim r As New RtfToHtml()

            ' 1. Set JPEG format and quality.
            Dim opt As New HtmlFixedSaveOptions() With {
                .ImagesDirectoryPath = Path.Combine(imgDir, "Result_images"),
                .ImagesDirectorySrcPath = "Result_images",
                .EmbedImages = False,
                .ImagesFormat = HtmlSaveOptions.EmbImagesFormat.Jpeg,
                .JpegQuality = 50,
                .Title = "JPEG images, 50% quality"
            }
            Try
				r.Convert(inpFile, outFile, opt)
			Catch ex As Exception
				Console.WriteLine($"Conversion failed! {ex.Message}")
			End Try

			' Open the result.
			System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
		End Sub
	End Class
End Namespace

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If you are looking also for a .NET solution to Create or Modify HTML documents, see our Document .Net.


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