- Add Long Term Validation (LTV) data to an existing signature
- How to downscale all images in a PDF
- How to generate and export certificates
- How to downscale all images in a PDF
- Add Stamp to PDF
- How to reduce PDF file size
- Highlight fields in PDF
- Add a note to PDF
- Resize PDF pages
- Extract glyph boxes from PDF
- Use TrueType font collections
- Layout text with MultilineTextShape
- Merge PDF files in C# .NET
- How do I extract page destinations from bookmarks?
- Clip PDF page content in C#
- Fill PDF form
- Extract glyphs and sort by reading order
- Add bookmarks to PDF
- How to scale content of PDF
- Create rectangles with rounded corners
- Create text with decorations
- TIFF to PDF C#
- Crop content on a PDF page
- How to embed files in a PDF document
- Remove graphics from PDF
- Change the color inside a PDF
- Import FDF into PDF
- Flatten PDF form
- Digitally sign a PDF form in C# or VB.NET
- Vector graphics in PDF
- Translate PDF page content
- Extract graphics from PDF
- Determine the content bounding box
- Search text in PDF
- Convert PDF to plain text
- Flatten Markup Annotation
- Add text field to PDF
- Extract embedded files from PDF
- Extract images from PDF
- Add a Diagonal Watermark to PDF in C#
- Fit image to PDF page
- Add simple html text to PDF
- Add multiline text to a PDF document
- Add single-line text to PDF
- Create a new digitally signed PDF document
- PDF Viewer Preferences
- Change page orientation PDF
- Split PDF pages in C# and VB.NET
- Append two or more existing PDF files
- Determine if a PDF only contains images
- Add footer to PDF
- Convert SVG to PDF
- Add hyperlink to PDF
- Rotate a PDF page
- Change the formatting of a numeric field
- How to mirror PDF pages and other shapes
- Fill in a template PDF document
- How to add autosized text to PDF
- Create formfields in PDF documents
- Export FDF from PDF form
- Add a link with an internal destination to PDF
- Remove PDF security settings
- Add a link to PDF with an external destination
- How to sign and verify updates to a PDF document
- Embed TrueType font
- How to create a tiling for shapes in PDF
- EMF to PDF as vector image
- Replace field with image
- Add a rubber stamp annotation with a custom icon
- Create a text annotation in PDF with rich text
- Read and write meta data from PDF
- Create a custom signature handler to sign and verify PDF documents
- Download and convert image to PDF
- Add barcodes to PDF
- Tagged PDF
- PDFKit.NET 5.0 - detailed changes to the API
- Create tagged PDF
- PDFKit.NET 5.0 and .NET Core
- PDFKit.NET 5.0 and Xamarin
- Dynamic XFA
- PDFKit.NET 5.0 .NET Standard API
- .NET Core console app on MacOS
- Add tags to existing PDF
- Read PDF tags
- Merge XDP data with dynamic XFA form
- Fill XFA form and export XDP data
- Fill and save dynamic XFA form
- Use PDFKit.NET 5.0 with a Xamarin.Forms app
- Use multiple licenses
- Licensing and .NET Standard
- Reduce PDF size
- Disable submit button after submitting
- Write Document to HttpResponse
TIFF to PDF C#
This article shows you how to convert a multipage TIFF to PDF using PDFKit.NET.
Code samples to convert TIFF to PDF in C# and VB.NET
Step 1: Get the number of TIFF frames
// count the number of TIFF frames/pages
string path = @"in.tif";
ImageShape image = new ImageShape(path);
int count = image.FrameCount;
' count the number of TIFF frames/pages
Dim path As String = "in.tif"
Dim image As ImageShape = New ImageShape(path)
Dim count As Integer = image.FrameCount
Step 2: Add a new page and image shape per frame
For each frame we add a page that has a size that equals the size of the frame. To the overlay of each page we add a single image shape that spans the entire page
Document document = new Document();
// for each frame add a section
for (int index = 0; index < count; index++)
{
// load the frame into an image shape
ImageShape frame = new ImageShape(path, index);
// create a page and add it to the document
Page page = new Page(frame.Width, frame.Height);
document.Pages.Add(page);
// add the image to the page overlay
page.Overlay.Add(frame);
}
Dim document As New Document()
' for each frame add a section
For index = 0 To count - 1
' load the frame into an image shape
Dim frame As New ImageShape(path, index)
' create a page and add it to the document.
Dim page As New Page(frame.Width, frame.Height)
document.Pages.Add(page)
' add the image to the page
page.Overlay.Add(frame)
Next
Step 3: Save the PDF document
// save the PDF to a file
using (FileStream file = new FileStream(
@"out.pdf", FileMode.Create, FileAccess.Write))
{
document.Write(file);
}
' save the PDF to a file
Using file = New FileStream( _
"out.pdf", FileMode.Create, FileAccess.Write)
document.Write(file)
End Using
Performance considerations when converting TIFF to PDF in C# / VB.NET
In this TIFF to PDF article we have used images based on files because PDFKit.NET is optimized to work with files and streams. Older versions used System.Drawing.Bitmap internally. While quite flexible, GDI+ also introduces performance and quality issues. GDI+ uses a lot of resources to hold entire bitmaps in memory, often uncompressed (!). In addition to this, GDI+ converts image data to whatever format is best suited for on-screen display, meaning that the actual color values in the image may change (!). Using files and streams allows efficient seeking and caching which results in better performance. In addition to this, the image processing is specifically designed to not modify the image data itself. So whenever possible, construct images from files or streams and avoid System.Drawing.Bitmap.

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