Image compression without losing quality in asp.net c#
In this article, we learn how to compress large size
images without losing image quality and without losing image size.
We have taken an image i.e. size 3.12MB and how we
will see how to compress that image without losing the image quality and size.
Source code:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="btnsave" runat="server" OnClick="btnsave_Click" Text="Button" />
</div>
</form>
</body>
</html>
Code Behind(c#):
using
System;
using
System.Collections.Generic;
using
System.Drawing;
using
System.Drawing.Drawing2D;
using
System.IO;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
public partial class imagecompressor :
System.Web.UI.Page
{
protected void
Page_Load(object sender, EventArgs e)
{
}
private void
compressimagesize(double scaleFactor, Stream sourcePath, string
targetPath)
{
using (var
image = System.Drawing.Image.FromStream(sourcePath))
{
var
imgnewwidth = (int)(image.Width * scaleFactor);
var
imgnewheight = (int)(image.Height * scaleFactor);
var
imgthumnail = new Bitmap(imgnewwidth, imgnewheight);
var
imgthumbgraph = Graphics.FromImage(imgthumnail);
imgthumbgraph.CompositingQuality = CompositingQuality.HighQuality;
imgthumbgraph.SmoothingMode = SmoothingMode.HighQuality;
imgthumbgraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
var
imageRectangle = new Rectangle(0, 0, imgnewwidth, imgnewheight);
imgthumbgraph.DrawImage(image,
imageRectangle);
imgthumnail.Save(targetPath,
image.RawFormat);
}
}
protected void
btnsave_Click(object sender, EventArgs e)
{
string
filename = Path.GetFileName(FileUpload1.PostedFile.FileName);
string
targetPath = Server.MapPath("Images/" +
filename);
string
saveimage = "Images/" + filename + "";
Stream
strm = FileUpload1.PostedFile.InputStream;
var
targetFile = targetPath;
targetFile = targetPath;
compressimagesize(0.5, strm,
targetFile);
}
}
Out-put:
Compressed image without losing the quality but now
image size 712KB
Image compression without losing quality in asp.net c#
Reviewed by NEERAJ SRIVASTAVA
on
11:03:00 AM
Rating:
Reviewed by NEERAJ SRIVASTAVA
on
11:03:00 AM
Rating:
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