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Programming / Document Conversion / Converting PDF documents to TIFF images

Converting PDF documents to TIFF images

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Converting PDF documents to TIFF images is a very useful and basic necessity in any document management system. Whether for processing, clean up, or just change of file format for sharing, your document management application needs to be able to accomplish this task easily. Here is how to do it using GdPicture.NET.

  • Now it is quick and easy one-step operation using the GdPictureDocumentConverter class.        
    Copy Code 
    'We assume that GdPicture has been correctly installed and unlocked.
Using oConverter As GdPictureDocumentConverter = New GdPictureDocumentConverter()
    Dim status As GdPictureStatus = oConverter.LoadFromFile("input.pdf", GdPicture14.DocumentFormat.DocumentFormatPDF)
    If status = GdPictureStatus.OK Then
        MessageBox.Show("The file has been loaded successfully.", "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information)
        status = oConverter.SaveAsTIFF("output.tif", TiffCompression.TiffCompressionAUTO)
        If status = GdPictureStatus.OK Then
            MessageBox.Show("The file has been saved successfully.", "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information)
        Else
            MessageBox.Show("The file has failed to save. Status: " + status.ToString(), "TIFF to PDF Example", MessageBoxButtons.OK, MessageBoxIcon.Error)
        End If
    Else
        MessageBox.Show("The file has failed to load. Status: " + status.ToString(), "TIFF to PDF Example", MessageBoxButtons.OK, MessageBoxIcon.Error)
    End If
End Using
    Copy Code 
    //We assume that GdPicture has been correctly installed and unlocked.
using (GdPictureDocumentConverter oConverter = new GdPictureDocumentConverter())
{
    GdPictureStatus status = oConverter.LoadFromFile("input.pdf", GdPicture14.DocumentFormat.DocumentFormatPDF);
    if (status == GdPictureStatus.OK)
    {
        MessageBox.Show("The file has been loaded successfully.", "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information);
        status = oConverter.SaveAsTIFF("output.tif", TiffCompression.TiffCompressionAUTO);
        if (status == GdPictureStatus.OK)
        {
            MessageBox.Show("The file has been saved successfully.", "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
        else
        {
            MessageBox.Show("The file has failed to save. Status: " + status.ToString(), "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }
    else
    {
        MessageBox.Show("The file has failed to load. Status: " + status.ToString(), "PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}
  • You can compare it with another approach by converting page by page using images through the GdPictureImaging class.  
    Copy Code 
    'We assume that GdPicture has been correctly installed and unlocked.
Dim oGdPictureImaging As New GdPictureImaging()
Dim oGdPicturePDF As New GdPicturePDF()
Dim multiTiffID As Integer = 0
'Loading the PDF document.
Dim status As GdPictureStatus = oGdPicturePDF.LoadFromFile("input.pdf", False)
'If PDF loading was successful:
If status = GdPictureStatus.OK Then
    'Loop through pages.
    For i As Integer = 1 To oGdPicturePDF.GetPageCount()
        'Selecting a page.
        oGdPicturePDF.SelectPage(i)
        'Rendering the selected page to GdPictureImage identifier.
        Dim rasterizedPageID As Integer = oGdPicturePDF.RenderPageToGdPictureImageEx(200F, True)
        If oGdPicturePDF.GetStat() = GdPictureStatus.OK Then
            'If it is the first page.
            If i = 1 Then
                multiTiffID = rasterizedPageID
                'Making the image a new multipage tiff image.
                status = oGdPictureImaging.TiffSaveAsMultiPageFile(multiTiffID, "output.tif", TiffCompression.TiffCompressionAUTO)
            Else
                'Adding a new image to multipage tiff image.
                status = oGdPictureImaging.TiffAddToMultiPageFile(multiTiffID, rasterizedPageID)
                'Releasing the last image identifier.
                oGdPictureImaging.ReleaseGdPictureImage(rasterizedPageID)
            End If
            'Checking for errors when adding a new page.
            If status <> GdPictureStatus.OK Then
                MessageBox.Show("TiffSaveAsMultiPageFile - Error: " + status.ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error)
                Exit For
            End If
        Else
            MessageBox.Show("RenderPageToGdPictureImageEx - Error: " + oGdPicturePDF.GetStat().ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error)
            Exit For
        End If
    Next
    'Closing the multipage tiff file.
    oGdPictureImaging.TiffCloseMultiPageFile(multiTiffID)
    'Releasing the multipage tiff image.
    oGdPictureImaging.ReleaseGdPictureImage(multiTiffID)
    'Closing and releasing the PDF document.
    oGdPicturePDF.CloseDocument()
    MessageBox.Show("Done!", "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information)
Else
    MessageBox.Show("The PDF document can't be loaded. Status: " + status.ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error)
End If
oGdPictureImaging.Dispose()
oGdPicturePDF.Dispose()
    Copy Code 
    //We assume that GdPicture has been correctly installed and unlocked.
GdPictureImaging oGdPictureImaging = new GdPictureImaging();
GdPicturePDF oGdPicturePDF = new GdPicturePDF();
int multiTiffID = 0;
//Loading the PDF document.
GdPictureStatus status = oGdPicturePDF.LoadFromFile("input.pdf", false);
//If PDF loading was successful:
if (status == GdPictureStatus.OK)
{
    //Loop through pages.
    for (int i = 1; i <= oGdPicturePDF.GetPageCount(); i++)
    {
        //selecting a page.
        oGdPicturePDF.SelectPage(i);
        //Rendering the selected page to GdPictureImage identifier.
        int rasterizedPageID = oGdPicturePDF.RenderPageToGdPictureImageEx(200.0f, true);
        if (oGdPicturePDF.GetStat() == GdPictureStatus.OK)
        {
            //If it is the first page.
            if (i == 1)
            {
                multiTiffID = rasterizedPageID;
                //Making the image a new multipage tiff image.
                status = oGdPictureImaging.TiffSaveAsMultiPageFile(multiTiffID, "output.tif", TiffCompression.TiffCompressionAUTO);
            }
            else
            {
                //Adding a new image to multipage tiff image.
                status = oGdPictureImaging.TiffAddToMultiPageFile(multiTiffID, rasterizedPageID);
                //Releasing the last image identifier.
                oGdPictureImaging.ReleaseGdPictureImage(rasterizedPageID);
            }
            //Checking for errors when adding a new page.
            if (status != GdPictureStatus.OK)
            {
                MessageBox.Show("TiffSaveAsMultiPageFile - Error: " + status.ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error);
                break;
            }
        }
        else
        {
            MessageBox.Show("RenderPageToGdPictureImageEx - Error: " + oGdPicturePDF.GetStat().ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error);
            break;
        }
    }
    //Closing the multipage tiff file.
    oGdPictureImaging.TiffCloseMultiPageFile(multiTiffID);
    //Releasing the multipage tiff image.
    oGdPictureImaging.ReleaseGdPictureImage(multiTiffID);
    //Closing and release the PDF document.
    oGdPicturePDF.CloseDocument();
    MessageBox.Show("Done!", "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
    MessageBox.Show("The PDF document can't be loaded. Status: " + status.ToString(), "Converting PDF to TIFF Example", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
oGdPictureImaging.Dispose();
oGdPicturePDF.Dispose();