Pass PDF page to image with Jpeg format and compression using C#

pq scan

Question:

Hi, support team.

I'm developing a windows from application, and I'd like to get jpeg image with compression from PDF page. Does your PDF to Image SDK support?

---- Edgar

pq scan

Answer:

Hi, Edgar.

The Library can provide you the uncompressed Bitmap converted from PDF page. Then you can compress this image as Jpeg format using C# .NET yourself.

Please see the C# code below:

using System;
using PQScan.PDFToImage;
using System.Drawing;
using System.Drawing.Imaging;

namespace PDFtoImageQuestion1
{
    class Program
    {
        static void Main(string[] args)
        {
            //open your PDF document
            PDFDocument doc = newPDFDocument();
            doc.LoadPDF("sample.pdf");
            //pass first page to image
            Bitmap bmp = doc.ToImage(0);

            //set compression quality
            EncoderParameters ep = newEncoderParameters();
            long[] qty = newlong[1];
            //the compression ratio need to be 1-100 
            qty[0] = 80;

            EncoderParameter eParam = newEncoderParameter(System.Drawing.Imaging.Encoder.Quality, qty);
            ep.Param[0] = eParam;

            bmp.Save("compressed.jpeg", GetImageCodecInfo("image/jpeg"), ep);

        }

        static ImageCodecInfo GetImageCodecInfo(string mimeType)
        {
            ImageCodecInfo[] CodecInfo = ImageCodecInfo.GetImageEncoders();
            foreach (ImageCodecInfo info in CodecInfo)
            {
                if (info.MimeType == mimeType) return info;
            }
            return null;
        }
    }
}

Hope the C# code can be helpful.

---- pqScan Support Team

Can I Get a Compression Jpeg Image from PDF ?