Found a nice post by Mr.Polite for compressing JPEG images. Here's the link:
http://www.vbforums.com/showthread.php?p=2038463
Posting the code here for my reference in case the original post gets deleted or changed.
Image myImage = //... load the image somehow // Save the image with a quality of 50% SaveJpeg (destImagePath, myImage, 50); //add this! using System.Drawing.Imaging; /// <summary> /// Saves an image as a jpeg image, with the given quality /// </summary> /// <param name="path">Path to which the image would be saved.</param> // <param name="quality">An integer from 0 to 100, with 100 being the /// highest quality</param> public static void SaveJpeg (string path, Image img, int quality) { if (quality<0 || quality>100) throw new ArgumentOutOfRangeException("quality must be between 0 and 100."); // Encoder parameter for image quality EncoderParameter qualityParam = new EncoderParameter (Encoder.Quality, quality); // Jpeg image codec ImageCodecInfo jpegCodec = GetEncoderInfo("image/jpeg"); EncoderParameters encoderParams = new EncoderParameters(1); encoderParams.Param[0] = qualityParam; img.Save (path, jpegCodec, encoderParams); } /// <summary> /// Returns the image codec with the given mime type /// </summary> private static ImageCodecInfo GetEncoderInfo(string mimeType) { // Get image codecs for all image formats ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders(); // Find the correct image codec for(int i=0; i<codecs.Length; i++) if(codecs[i].MimeType == mimeType) return codecs[i]; return null; }