Converting Multi-page TIFF Images to PDF

Updated on Jun 5, 2026

Environment

Version	Product	Author
2024.2.426	RadPdfProcessing	Desislava Yordanova

Description

This article demonstrates how to generate a PDF document from a multi-page TIFF file. The approach ensures the entire TIFF image fits on the PDF page without any content being cut off.

Solution

To prevent TIFF images from being cut off when converted to PDF, create a list of images from the TIFF frames. Then, adjust the PDF page dimensions to fit the image size. The following is a step-by-step guide:

1. Convert the TIFF image to individual JPEG or PNG images. Match each image size to the TIFF frame size to avoid scaling issues.
2. Create a new RadFixedDocument and set the page size based on the image dimensions.
3. Use RadFixedDocumentEditor to add the images to the document pages. Each image must fit the page.
4. Export the document to PDF format with PdfFormatProvider.

The following code snippet demonstrates this process:

csharp

static void Main(string[] args)
{
    string tiffFilePath = "test4.tif";
    string imageFolderPath = @"..\..\Images";
    System.Windows.Size pageSize = CreatedImages(tiffFilePath, imageFolderPath);
    GeneratePdfFromImagesWithRadFixedDocumentEditor(imageFolderPath, pageSize);
}

private static System.Windows.Size CreatedImages(string file, string imageFolderPath)
{
    int offset = 5;
    System.Windows.Size pageSize = new System.Windows.Size(100, 100);
    List<Image> images = new List<Image>();
    Bitmap bitmap = (Bitmap)Image.FromFile(file);
    int count = bitmap.GetFrameCount(FrameDimension.Page);
    string tempImg = string.Empty;
    for (int idx = 0; idx < count; idx++)
    {
        bitmap.SelectActiveFrame(FrameDimension.Page, idx);
        MemoryStream byteStream = new MemoryStream();
        bitmap.Save(byteStream, ImageFormat.Tiff);
        if (bitmap.Width > pageSize.Width )
        {
            pageSize = new System.Windows.Size(bitmap.Width+ offset, pageSize.Height);
        }
        if (bitmap.Height > pageSize.Height)
        {
            pageSize = new System.Windows.Size(pageSize.Width, bitmap.Height + offset);
        }
        tempImg = imageFolderPath+@"\img" + idx + ".jpeg";
        File.Delete(tempImg);
        bitmap.Save(tempImg, ImageFormat.Jpeg);
        images.Add(Image.FromStream(byteStream));
    }
    return pageSize;
}
private static void GeneratePdfFromImagesWithRadFixedDocumentEditor(string imageFolderPath, System.Windows.Size pageSize)
{
    Padding pageMarginsValue = new Padding(
        Unit.MmToDip(0),//left
         Unit.MmToDip(0),//top
          Unit.MmToDip(0),//right
           Unit.MmToDip(0));//bottom 
    RadFixedDocument fixedDocument = new RadFixedDocument();
    RadFixedDocumentEditor documentEditor = new RadFixedDocumentEditor(fixedDocument);
    documentEditor.SectionProperties.PageSize = pageSize;
    documentEditor.SectionProperties.PageMargins = pageMarginsValue;
    string[] imageFiles = Directory.GetFiles(imageFolderPath);

    foreach (string imageFilePath in imageFiles)
    {
        FileStream fileStream = new FileStream(imageFilePath, FileMode.Open);
        Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource _imageSource =
            new Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource(fileStream);
        documentEditor.InsertImageInline(_imageSource);
        documentEditor.InsertLineBreak();
    }
    documentEditor.Dispose();

    PdfFormatProvider provider = new PdfFormatProvider();
    string outputFilePath = @"..\..\sample.pdf";
    File.Delete(outputFilePath);
    using (Stream output = File.OpenWrite(outputFilePath))
    {
        provider.Export(fixedDocument, output);
    }
    Process.Start(outputFilePath);
}

This approach ensures the TIFF images are converted to PDF format without any part being cut off. The key is to adjust the document's page size to match the image dimensions.

Notes

• The conversion process saves each TIFF frame as a separate image (JPEG or PNG) to accurately size the document pages.
• The offset variable adds a margin around the image to keep it from touching the page edges.

See Also

• RadPdfProcessing Documentation
• How to Generate a PDF Document from Images with FixedContentEditor
• How to Generate a PDF Document from Images with RadFixedDocumentEditor
• Converting a PDF Document to a Multipage TIFF Image