Class PdfImageExtractor

Inheritance

System.Object

PdfImageExtractor

Namespace: Syncfusion.Pdf.Exporting

Assembly: Syncfusion.Pdf.Imaging.Portable.dll

Syntax

public static class PdfImageExtractor : Object

Methods

ExtractImages(PdfPageBase)

Extract the images from the PDF

Declaration

public static Image[] ExtractImages(this PdfPageBase page)

Parameters

Type	Name	Description
PdfPageBase	page

Returns

Type	Description
System.Drawing.Image[]	returns the List of images

Examples

 FileStream input = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
 PdfLoadedDocument loadedDocument = new PdfLoadedDocument(input);
 //Load first page.
 PdfPageBase pageBase = loadedDocument.Pages[0];
 //Extract images from first page.
 Image[] extractedImages = pageBase.ExtractImages();
 //close the document
loadedDocument.Close(true);

 'Load PDF document.
 Dim input As New FileStream("Input.pdf", FileMode.Open, FileAccess.Read)
 Dim loadedDocument As New PdfLoadedDocument(input)
'Load first page.
Dim pageBase As PdfPageBase = loadedDocument.Pages(0)
'Extract images from first page.
Dim extractedImages As Image() = pageBase.ExtractImages()
'close the document.
loadedDocument.Close(True)

GetImagesInfo(PdfPageBase)

Gets the information about the extracted image from the PDF page

Declaration

public static PdfImageInfo[] GetImagesInfo(this PdfPageBase page)

Parameters

Type	Name	Description
PdfPageBase	page

Returns

Type	Description
PdfImageInfo[]

Examples

//Load PDF document.
FileStream input = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(input);
//Gets ImageInfo from the first page.
PdfImageInfo[] imageInfo = document.Pages[0].GetImagesInfo();
//Gets the Image Boundary location.
RectangleF imageBounds = imageInfo[0].Bounds;
//Gets the Image.
Image image = imageInfo[0].Image;
//Gets the Image index.
int imageIndex = imageInfo[0].Index;
//Closing the PDF document.
document.Close(true);

'Load PDF document.
Dim input As New FileStream("Input.pdf", FileMode.Open, FileAccess.Read)
Dim document As New PdfLoadedDocument(input)
'Gets ImageInfo from the first page.
Dim imageInfo As PdfImageInfo() = document.Pages(0).GetImagesInfo()
'Gets the Image Boundary location.
Dim imageBounds As RectangleF = imageInfo(0).Bounds
'Gets the Image.
Dim image As Image = imageInfo(0).Image
'Gets the Image index.
Dim imageIndex As Integer = imageInfo(0).Index
'Closing the PDF document.
document.Close(True)

See Also

PdfDocument

PdfPage

RemoveImage(PdfPageBase, PdfImageInfo)

Remove the image from PDF page in existing PDF document

Declaration

public static void RemoveImage(this PdfPageBase page, PdfImageInfo imageInfo)

Parameters

Type	Name	Description
PdfPageBase	page
PdfImageInfo	imageInfo

Examples

 //Load an existing PDF.
 PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
 //Load first page.
 PdfPageBase pageBase = loadedDocument.Pages[0];
 //Extract images from first page.        
 PdfImageInfo imageInfo = loadedDocument.Pages[0].ImagesInfo[0];
 //Remove the Image.
loadedDocument.Pages[0].RemoveImage(imageInfo);
 MemoryStream stream = new MemoryStream();
 //Save the document
 loadedDocument.Save(stream);
 //close the document
loadedDocument.Close(true);

'Load an existing PDF
 Dim loadedDocument As PdfLoadedDocument =  New PdfLoadedDocument(fileName) 
 'Load first page.
 Dim pageBase As PdfPageBase = loadedDocument.Pages(0) 
 'Extract images from first page.        
 Dim imageInfo As PdfImageInfo = loadedDocument.Pages(0).ImagesInfo(0) 
 'Remove the Image.
 loadedDocument.Pages(0).RemoveImage(imageInfo)       
 Dim stream As New MemoryStream()
 'Save the document
 loadedDocument.Save(stream)
 'close the document
 loadedDocument.Close(True)        

ReplaceImage(PdfPageBase, Int32, PdfImage)

Replace the Image at index's Position.

Declaration

public static void ReplaceImage(this PdfPageBase page, int index, PdfImage image)

Parameters

Type	Name	Description
PdfPageBase	page
System.Int32	index	index of an image
PdfImage	image	The New Replace image

Examples

 //Load the PDF document
 FileStream input = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
 PdfLoadedDocument doc = new PdfLoadedDocument(input);
 //Create an image instance
 PdfBitmap bmp = new PdfBitmap(new FileStream("Autumn Leaves.jpg", FileMode.Open, FileAccess.Read));
 //Replace the first image in the page.
 doc.Pages[0].ReplaceImage(0, bmp);
 MemoryStream stream = new MemoryStream();
 //Save the document
 doc.Save(stream);
 //Close the document
 doc.Close(true);

 'Load the PDF document
 Dim input As New FileStream("Input.pdf", FileMode.Open, FileAccess.Read)
 Dim doc As New PdfLoadedDocument(input)
 Dim input As New FileStream("Autumn Leaves.jpg", FileMode.Open, FileAccess.Read)
 'Create an image instance
 Dim bmp As New PdfBitmap(input)
 'Replace the first image in the page.
 doc.Pages(0).ReplaceImage(0, bmp)
 Dim stream As New MemoryStream()
 'Save the document
 doc.Save(stream)
 'Close the document
 doc.Close(True)