How to optimize multiple images from folder at once (decrease file size) manually in webapi?

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Hi all i am working on webapi i need to optimize the images from folder

here i Had Uploaded images into one folder before

uploading in to the destination folder i need to decrease the image size in KB of total images

here i am optimizing a single image in to 3 different sizes' (large, thumbnail,medium)' but image sizes are increased and saved in one folder now i need to optimize those images could u plz help me how could i do that. actually i am new to webapi. any body could have any idea please help me but one thing i need to do this manually thankyou in advance

Posted 25-Sep-12 21:07pm

shakil4u

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Pro Idiot · Accepted Answer · 2012-09-25T21:47:00

Solution 1

If you want to reduce the uploaded image size only , and retain its quality this link will be helpful

how to resize image without losing image quality or how to reduce image file size without losing quality using asp.net

Posted 25-Sep-12 21:47pm

Pro Idiot

Comments

shakil4u 26-Sep-12 6:44am

yes but it is for only asp.net i need to be work in webapi thankyou for time spent for me if ane other help ploease help me

shakil4u 26-Sep-12 12:06pm

thank for your answer i got it

shakil4u · Accepted Answer · 2012-10-10T20:18:00

as of above question no problem i think it is increasing with quality option you just have to do simple just decrease the quality make upload image and check it once

C#

public static void Resize(string original, string output, int width, int height)
        {
            using (var image = Image.FromFile(original))
            using (var thumbnail = new Bitmap(width, height))
            using (var graphics = Graphics.FromImage(thumbnail))
            {
                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
                graphics.SmoothingMode = SmoothingMode.HighQuality;
                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
                graphics.CompositingQuality = CompositingQuality.HighQuality;

                graphics.DrawImage(image, 0, 0, width, height);

                ImageCodecInfo[] info = ImageCodecInfo.GetImageEncoders();
                EncoderParameters encoderParameters;
                encoderParameters = new EncoderParameters(1);
                encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 80L);
                thumbnail.Save(output, info[1], encoderParameters);
            }
        }