How to convert PDF files to images

Question

I need to convert PDF files to images. If the PDF file is multi-page，I just need one image that contains all of the PDF pages.

Is there an open source solution which is not charged like the Acrobat product?

Answer 1

The thread "converting PDF file to a JPEG image" is suitable for your request.

One solution is to use a third-party library. ImageMagick is a very popular and is freely available too. You can get a .NET wrapper for it here. The original ImageMagick download page is here.

• Convert PDF pages to image files using the Solid Framework Convert PDF pages to image files using the Solid Framework (dead link, the deleted document is available on Internet Archive).
• Convert PDF to JPG Universal Document Converter
• 6 Ways to Convert a PDF to a JPG Image

And you also can take a look at the thread "How to open a page from a pdf file in pictureBox in C#".

If you use this process to convert a PDF to tiff, you can use this class to retrieve the bitmap from TIFF.

public class TiffImage {     private string myPath;     private Guid myGuid;     private FrameDimension myDimension;     public ArrayList myImages = new ArrayList();     private int myPageCount;     private Bitmap myBMP;      public TiffImage(string path)     {         MemoryStream ms;         Image myImage;          myPath = path;         FileStream fs = new FileStream(myPath, FileMode.Open);         myImage = Image.FromStream(fs);         myGuid = myImage.FrameDimensionsList[0];         myDimension = new FrameDimension(myGuid);         myPageCount = myImage.GetFrameCount(myDimension);         for (int i = 0; i < myPageCount; i++)         {             ms = new MemoryStream();             myImage.SelectActiveFrame(myDimension, i);             myImage.Save(ms, ImageFormat.Bmp);             myBMP = new Bitmap(ms);             myImages.Add(myBMP);             ms.Close();         }         fs.Close();     } } 

Use it like so:

private void button1_Click(object sender, EventArgs e) {     TiffImage myTiff = new TiffImage("D:\\Some.tif");     //imageBox is a PictureBox control, and the [] operators pass back     //the Bitmap stored at that position in the myImages ArrayList in the TiffImage     this.pictureBox1.Image = (Bitmap)myTiff.myImages[0];     this.pictureBox2.Image = (Bitmap)myTiff.myImages[1];     this.pictureBox3.Image = (Bitmap)myTiff.myImages[2]; }