Codecs: How to convert PDF to TIFF?

In This Topic

SDK renders PDF page (draws text, images and graphics on PDF page) when converting PDF document to a TIFF file.

By default SDK:

Renders PDF page with 96 dpi resolution.
Searches external font in directory "$ASSEMBLY_DIRECTORY$\Fonts\" and in fonts directory of the operation system.

You need override algorithm for searching external fonts if PDF document contains not standard external fonts. This can be done using the FileFontProgramsControllerWithFallbackFont class.
More info about fonts in PDF document can be found here.

Here is an example that shows how to convert PDF document with default resolution (96 dpi) to TIFF file using ImageCollection and TiffEncoder classes:

/// <summary>
/// Class shows how to convert PDF document to TIFF file using ImageCollection and TiffEncoder classes.
/// </summary>
public class ConvertPdfToTiffUsingEncoder
{

    /// <summary>
    /// Converts PDF document to TIFF file using ImageCollection and TiffEncoder classes.
    /// </summary>
    public static void Convert(string pdfFileName, string tiffFileName)
    {
        // create image collection
        using (Vintasoft.Imaging.ImageCollection imageCollection = 
            new Vintasoft.Imaging.ImageCollection())
        {
            // add PDF document to collection
            imageCollection.Add(pdfFileName);

            // create TiffEncoder
            using (Vintasoft.Imaging.Codecs.Encoders.TiffEncoder tiffEncoder = 
                new Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(true))
            {
                // set TIFF compression to Zip
                tiffEncoder.Settings.Compression = 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip;

                // save images of image collection to TIFF file using TiffEncoder
                imageCollection.SaveSync(tiffFileName, tiffEncoder);
            }

            // dispose images
            imageCollection.ClearAndDisposeItems();
        }
    }

}

VB.NET

''' <summary>
''' Class shows how to convert PDF document to TIFF file using ImageCollection and TiffEncoder classes.
''' </summary>
Public Class ConvertPdfToTiffUsingEncoder

    ''' <summary>
    ''' Converts PDF document to TIFF file using ImageCollection and TiffEncoder classes.
    ''' </summary>
    Public Shared Sub Convert(pdfFileName As String, tiffFileName As String)
        ' create image collection
        Using imageCollection As New Vintasoft.Imaging.ImageCollection()
            ' add PDF document to collection
            imageCollection.Add(pdfFileName)

            ' create TiffEncoder
            Using tiffEncoder As New Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(True)
                ' set TIFF compression to Zip
                tiffEncoder.Settings.Compression = Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip

                ' save images of image collection to TIFF file using TiffEncoder
                imageCollection.SaveSync(tiffFileName, tiffEncoder)
            End Using

            ' dispose images
            imageCollection.ClearAndDisposeItems()
        End Using
    End Sub

End Class

Here is an example that shows how to convert PDF document with specified resolution to TIFF file using ImageCollection and TiffEncoder classes:

/// <summary>
/// Class shows how to convert PDF document to TIFF file using ImageCollection and TiffEncoder classes.
/// PDF document is rendered with specified resolution.
/// </summary>
public class ConvertPdfToTiffUsingEncoderWithSpecifiedResolution
{

    /// <summary>
    /// Converts PDF document to TIFF file using ImageCollection and TiffEncoder classes.
    /// PDF document is rendered with specified resolution.
    /// </summary>
    public static void Convert(string pdfFileName, string tiffFileName, float dpi)
    {
        // create image collection
        using (Vintasoft.Imaging.ImageCollection imageCollection = new Vintasoft.Imaging.ImageCollection())
        {
            // add PDF document to collection
            imageCollection.Add(pdfFileName);

            // set rendering settings
            imageCollection.SetRenderingSettings(new Vintasoft.Imaging.Codecs.Decoders.RenderingSettings(
                dpi,
                dpi,
                Vintasoft.Imaging.ImageInterpolationMode.HighQualityBilinear,
                Vintasoft.Imaging.Drawing.DrawingSmoothingMode.AntiAlias));

            // create TiffEncoder
            using (Vintasoft.Imaging.Codecs.Encoders.TiffEncoder tiffEncoder = 
                new Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(true))
            {
                // set TIFF compression to Zip
                tiffEncoder.Settings.Compression = 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip;

                // save images of image collection to TIFF file using TiffEncoder
                imageCollection.SaveSync(tiffFileName, tiffEncoder);
            }

            // dispose images
            imageCollection.ClearAndDisposeItems();
        }
    }
}

VB.NET

''' <summary>
''' Class shows how to convert PDF document to TIFF file using ImageCollection and TiffEncoder classes.
''' PDF document is rendered with specified resolution.
''' </summary>
Public Class ConvertPdfToTiffUsingEncoderWithSpecifiedResolution

    ''' <summary>
    ''' Converts PDF document to TIFF file using ImageCollection and TiffEncoder classes.
    ''' PDF document is rendered with specified resolution.
    ''' </summary>
    Public Shared Sub Convert(pdfFileName As String, tiffFileName As String, dpi As Single)
        ' create image collection
        Using imageCollection As New Vintasoft.Imaging.ImageCollection()
            ' add PDF document to collection
            imageCollection.Add(pdfFileName)

            ' set rendering settings
            imageCollection.SetRenderingSettings(New Vintasoft.Imaging.Codecs.Decoders.RenderingSettings(dpi, dpi, Vintasoft.Imaging.ImageInterpolationMode.HighQualityBilinear, Vintasoft.Imaging.Drawing.DrawingSmoothingMode.AntiAlias))

            ' create TiffEncoder
            Using tiffEncoder As New Vintasoft.Imaging.Codecs.Encoders.TiffEncoder(True)
                ' set TIFF compression to Zip
                tiffEncoder.Settings.Compression = Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip

                ' save images of image collection to TIFF file using TiffEncoder
                imageCollection.SaveSync(tiffFileName, tiffEncoder)
            End Using

            ' dispose images
            imageCollection.ClearAndDisposeItems()
        End Using
    End Sub
End Class

Here is an example that shows how to convert PDF document with default resolution (96 dpi) to TIFF file using PdfDocument and TiffFile classes:

/// <summary>
/// Class shows how to convert PDF document to TIFF file using PdfDocument and TiffFile classes.
/// </summary>
public class ConvertPdfToTiffUseImageFile
{
    /// <summary>
    /// Converts PDF document to TIFF file using PdfDocument and TiffFile classes.
    /// </summary>
    public static void Convert(string pdfFileName, string tiffFileName)
    {
        // open existing PDF document
        using (Vintasoft.Imaging.Pdf.PdfDocument pdfDocument = new Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName))
        {
            // create new TIFF file
            using (Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile tiffFile = 
                new Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(tiffFileName, 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFileFormat.LittleEndian))
            {
                // set TIFF compression to Zip
                tiffFile.Pages.EncoderSettings.Compression = 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip;
                // for each PDF page
                for (int i = 0; i < pdfDocument.Pages.Count; i++)
                {
                    // render PDF page and add as image to Tiff file
                    tiffFile.Pages.Add(pdfDocument.Pages[i].Render());
                    // save changes to TIFF file
                    tiffFile.SaveChanges();
                }
            }
        }
    }
}

VB.NET

''' <summary>
''' Class shows how to convert PDF document to TIFF file using PdfDocument and TiffFile classes.
''' </summary>
Public Class ConvertPdfToTiffUseImageFile
    ''' <summary>
    ''' Converts PDF document to TIFF file using PdfDocument and TiffFile classes.
    ''' </summary>
    Public Shared Sub Convert(pdfFileName As String, tiffFileName As String)
        ' open existing PDF document
        Using pdfDocument As New Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName)
            ' create new TIFF file
            Using tiffFile As New Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(tiffFileName, Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFileFormat.LittleEndian)
                ' set TIFF compression to Zip
                tiffFile.Pages.EncoderSettings.Compression = Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip
                ' for each PDF page
                For i As Integer = 0 To pdfDocument.Pages.Count - 1
                    ' render PDF page and add as image to Tiff file
                    tiffFile.Pages.Add(pdfDocument.Pages(i).Render())
                    ' save changes to TIFF file
                    tiffFile.SaveChanges()
                Next
            End Using
        End Using
    End Sub
End Class

Here is an example that shows how to convert PDF document with specified resolution to TIFF file using PdfDocument and TiffFile classes:

/// <summary>
/// Class shows how to convert PDF document to TIFF file using PdfDocument and TiffFile classes.
/// PDF document is rendered with specified resolution.
/// </summary>
public class ConvertPdfToTiffUseImageFileWithSpecifiedResolution
{

    /// <summary>
    /// Converts PDF document to TIFF file using PdfDocument and TiffFile classes.
    /// PDF document is rendered with specified resolution.
    /// </summary>
    public static void Convert(string pdfFileName, string tiffFileName, float dpi)
    {
        // open existing PDF document
        using (Vintasoft.Imaging.Pdf.PdfDocument pdfDocument = 
            new Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName))
        {
            // set resolution
            pdfDocument.RenderingSettings.Resolution = 
                new Vintasoft.Imaging.Resolution(dpi, dpi);
            
            // set rendering mode - optimal balance between rendering speed and quality
            pdfDocument.RenderingSettings.RenderingMode = Vintasoft.Imaging.Pdf.PdfRenderingMode.Normal;

            // create new TIFF file
            using (Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile tiffFile = 
                new Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(tiffFileName, 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFileFormat.LittleEndian))
            {
                // set TIFF compression to Zip
                tiffFile.Pages.EncoderSettings.Compression = 
                    Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip;
                // for each PDF page
                for (int i = 0; i < pdfDocument.Pages.Count; i++)
                {
                    // render PDF page and add as image to Tiff file
                    tiffFile.Pages.Add(pdfDocument.Pages[i].Render());
                    // save changes to TIFF file
                    tiffFile.SaveChanges();
                }
            }
        }
    }

}

VB.NET

''' <summary>
''' Class shows how to convert PDF document to TIFF file using PdfDocument and TiffFile classes.
''' PDF document is rendered with specified resolution.
''' </summary>
Public Class ConvertPdfToTiffUseImageFileWithSpecifiedResolution

    ''' <summary>
    ''' Converts PDF document to TIFF file using PdfDocument and TiffFile classes.
    ''' PDF document is rendered with specified resolution.
    ''' </summary>
    Public Shared Sub Convert(pdfFileName As String, tiffFileName As String, dpi As Single)
        ' open existing PDF document
        Using pdfDocument As New Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName)
            ' set resolution
            pdfDocument.RenderingSettings.Resolution = New Vintasoft.Imaging.Resolution(dpi, dpi)

            ' set rendering mode - optimal balance between rendering speed and quality
            pdfDocument.RenderingSettings.RenderingMode = Vintasoft.Imaging.Pdf.PdfRenderingMode.Normal

            ' create new TIFF file
            Using tiffFile As New Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFile(tiffFileName, Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffFileFormat.LittleEndian)
                ' set TIFF compression to Zip
                tiffFile.Pages.EncoderSettings.Compression = Vintasoft.Imaging.Codecs.ImageFiles.Tiff.TiffCompression.Zip
                ' for each PDF page
                For i As Integer = 0 To pdfDocument.Pages.Count - 1
                    ' render PDF page and add as image to Tiff file
                    tiffFile.Pages.Add(pdfDocument.Pages(i).Render())
                    ' save changes to TIFF file
                    tiffFile.SaveChanges()
                Next
            End Using
        End Using
    End Sub

End Class

Send Feedback