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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();