Image extraction from a PDF document is another exciting feature of Aspose.Pdf.Kit (Java Version ) for developers.

 

Aspose.Pdf.Kit (Java Version ) provides a class PdfExtractor (Java Version ) that is used to extract content from any PDF document. To extract Images from a PDF document, follow these steps:

 

1. Create an object of PdfExtractor (Java Version ) class by calling its empty constructor
2. Bind the PDF document with extractor by calling BindPdf (Java Version ) method that would take the input PDF file path or a stream as argument.
3. Set the number of Start Page and End Page of the PDF document (using StartPage (Java Version ) and EndPage (Java Version ) properties of the PdfExtractor class) to provide the range of pages in which you want to extract images.
4. Call ExtractImage (Java Version ) method that will extract image from PDF document.
5. Call HasNextImage (Java Version ) method in a loop to iterate through the images in the PDF document. HasNextImage (Java Version ) method will check any next image in the PDF document and return true. If there is no next image in PDF document then false will be returned by the method.
6. Finally, in the body of the loop, developers can call GetNextImage (Java Version ) method to store the image as a file (in jpg format) or a stream.

 

Code Snippet

 

[C#]

 

//Instantiate PdfExtractor object

PdfExtractor extractor = new PdfExtractor();

 

//Bind the input PDF document to extractor

extractor.BindPdf(".\\Images.pdf");

 

//Set the Number of Page in PDF document from where to start image extraction

extractor.StartPage = 1;

 

//Set the Number of Page in PDF document, where to end image extraction

extractor.EndPage = 2;

 

//Extract images from the input PDF document

extractor.ExtractImage();

 

//A variable to store the prefix (First Part usually file name) of the image file name

String prefix = ".\\Image";

 

//A variable to store the suffix (Last Part usually file extension) of the image file name

String suffix = ".jpg";

 

//A variable to count number of extracted images

int imageCount = 1;

 

//Calling HasNextImage method in while loop. When images will finish, loop will exit

while (extractor.HasNextImage())

{

  //Call GetNextImage method to store image as a file

  extractor.GetNextImage(prefix + imageCount + suffix);

 

  //Incrementing image counter variable

  imageCount++;

}

 

[VB.NET]

 

//Instantiate PdfExtractor object

Dim extractor As PdfExtractor =  New PdfExtractor()

 

//Bind the input PDF document to extractor

extractor.BindPdf(".\\Images.pdf")

 

//Set the Number of Page in PDF document from where to start image extraction

extractor.StartPage = 1

 

//Set the Number of Page in PDF document, where to end image extraction

extractor.EndPage = 2

 

//Extract images from the input PDF document

extractor.ExtractImage()

 

//A variable to store the prefix (First Part usually file name) of the image file name

Dim prefix As String =  ".\\Image"

 

//A variable to count number of extracted images

Dim suffix As String =  ".jpg"

 

//A variable to count number of extracted images

Dim imageCount As Integer =  1

 

//Calling HasNextImage method in while loop. When images will finish, loop will exit

While extractor.HasNextImage()

 

  //Call GetNextImage method to store image as a file

  extractor.GetNextImage(prefix + imageCount + suffix)

 

  //Incrementing image counter variable

  imageCount = imageCount + 1

 

End While

 

[Java]

 

//Instantiate PdfExtractor object

PdfExtractor extractor = new PdfExtractor();

 

//Bind the input PDF document to extractor

extractor.bindPdf(path + "Image.pdf");

 

//Extract images from the input PDF document

extractor.extractImage();

String suffix = ".jpg";

int imageCount = 1;

while (extractor.hasNextImage()) {

    extractor.getNextImage(path + imageCount + suffix);

    imageCount++;

}