A quick start .NET console project that shows how to add watermarks and bookmarks to a PDF document using the Syncfusion PDF Library.
Framework and SDKs
- .NET SDK (version 5.0 or later)
IDEs
- Visual Studio 2019/ Visual Studio 2022
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Get stream from an existing PDF document.
FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Load the page.
PdfPageBase loadedPage = loadedDocument.Pages[0];
//Create graphics for PDF page.
PdfGraphics graphics = loadedPage.Graphics;
//Set the font.
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 20);
//Watermark text.
PdfGraphicsState state = graphics.Save();
//Set transparency and rotate transform to page graphics.
graphics.SetTransparency(0.25f);
graphics.RotateTransform(-40);
//Draw watermark text in the PDF document.
graphics.DrawString("Imported using Essential PDF", font, PdfPens.Red, PdfBrushes.Red, new PointF(-150, 450));
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
loadedDocument.Save(outputFileStream);
}
//Close the document.
loadedDocument.Close(true);Execute this code example to get a text watermark in PDF document like in the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Get stream from an existing PDF document.
FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Load the page.
PdfPageBase loadedPage = loadedDocument.Pages[0];
//Create graphics for PDF page.
PdfGraphics graphics = loadedPage.Graphics;
//Load the image file as stream.
FileStream imageStream = new FileStream("Image.png", FileMode.Open, FileAccess.Read);
//Load the image file.
PdfImage image = new PdfBitmap(imageStream);
//Create state for page graphics.
PdfGraphicsState state = graphics.Save();
//Set transparency for page graphics.
graphics.SetTransparency(0.25f);
//Draw image watermark in PDF page.
graphics.DrawImage(image, new PointF(0, 0), loadedPage.Graphics.ClientSize);
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
loadedDocument.Save(outputFileStream);
}
//Close the document.
loadedDocument.Close(true);Execute this code example to get an image watermark in PDF document like in the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Get stream from an existing PDF document.
FileStream docStream = new FileStream("Data.pdf", FileMode.Open, FileAccess.Read);
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
for (int i = 0; i < loadedDocument.Pages.Count; i++) {
//Get the page.
PdfLoadedPage lpage = loadedDocument.Pages[i] as PdfLoadedPage;
//Gets the annotation collection.
PdfLoadedAnnotationCollection loadedAnnotationCollection = lpage.Annotations;
for (int j = 0; j < loadedAnnotationCollection.Count; j++) {
//Gets the annotation.
PdfLoadedAnnotation annotation = lpage.Annotations[j] as PdfLoadedAnnotation;
if (annotation != null && annotation is PdfLoadedWatermarkAnnotation) {
//Removes the first annotation.
loadedAnnotationCollection.RemoveAt(j);
}
}
}
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
loadedDocument.Save(outputFileStream);
}
//Close the document.
loadedDocument.Close(true);Execute this code example to get a remove watermark in PDF document like in the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Load an existing PDF document.
FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Creates parent bookmark.
PdfBookmark bookmark = document.Bookmarks.Add("Chapter 1");
//Sets the destination page.
bookmark.Destination = new PdfDestination(document.Pages[1]);
//Sets the text style and color for parent bookmark.
bookmark.TextStyle = PdfTextStyle.Bold;
bookmark.Color = Color.Red;
//Sets the destination location for parent bookmark.
bookmark.Destination.Location = new PointF(20, 20);
//Adds the child bookmark.
PdfBookmark childBookmark = bookmark.Insert(0, "Section 1");
//Sets the destination location for child bookmark.
childBookmark.Destination = new PdfDestination(document.Pages[1]);
childBookmark.Destination.Location = new PointF(0, 200);
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
document.Save(outputFileStream);
}
//Close the document.
document.Close(true);By executing this code example, you will get a PDF document like the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Load the PDF document.
FileStream docStream = new FileStream("Data.pdf", FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Inserts a new bookmark in the existing bookmark collection.
PdfBookmark bookmark = document.Bookmarks.Insert(0, "Title Page");
//Sets the destination page and location.
bookmark.Destination = new PdfDestination(document.Pages[0]);
bookmark.Destination.Location = new PointF(0, 0);
//Sets the text style and color.
bookmark.TextStyle = PdfTextStyle.Bold;
bookmark.Color = Color.Green;
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
document.Save(outputFileStream);
}
//Close the document.
document.Close(true);By executing this code example, you will get a PDF document like the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Load the PDF document.
FileStream docStream = new FileStream("Data.pdf", FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Gets all the bookmarks.
PdfBookmarkBase bookmarks = document.Bookmarks;
//Gets the first bookmark and changes the properties of the bookmark.
PdfLoadedBookmark bookmark = bookmarks[0] as PdfLoadedBookmark;
bookmark.Destination = new PdfDestination(document.Pages[2]);
bookmark.Color = Color.Green;
bookmark.TextStyle = PdfTextStyle.Bold;
bookmark.Title = "Chapter2";
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
document.Save(outputFileStream);
}
//Close the document.
document.Close(true);By executing this code example, you will get a PDF document like the following screenshot.
We will create a new .NET console application, add the Syncfusion PDF library package, and write the code
//Load the PDF document.
FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Gets all the bookmarks.
PdfBookmarkBase bookmarks = document.Bookmarks;
//Remove parent bookmark by index.
bookmarks.RemoveAt(1);
//Remove child bookmark by bookmark name.
PdfLoadedBookmark parentBookmark = bookmarks[0] as PdfLoadedBookmark;
parentBookmark.Remove("Section 4");
//Create file stream.
using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.ReadWrite)) {
//Save the PDF document to file stream.
document.Save(outputFileStream);
}
//Close the document.
document.Close(true);By executing this code example, you will get a PDF document like the following screenshot.
- Download this project to a location in your disk.
- Open the solution file using Visual Studio.
- Rebuild the solution to install the required NuGet package.
- Run the application.
- Product page: Syncfusion PDF Framework
- Documentation page: Syncfusion .NET PDF library
- Online demo: Syncfusion .NET PDF library - Online demos
- Blog: Syncfusion .NET PDF library - Blog
- Knowledge Base: Syncfusion .NET PDF library - Knowledge Base
- EBooks: Syncfusion .NET PDF library - EBooks
- FAQ: Syncfusion .NET PDF library - FAQ
- For any other queries, reach our Syncfusion support team or post the queries through the community forums.
- Request new feature through Syncfusion feedback portal.
This is a commercial product and requires a paid license for possession or use. Syncfusion’s licensed software, including this component, is subject to the terms and conditions of Syncfusion's EULA. You can purchase a licnense here or start a free 30-day trial here.
Founded in 2001 and headquartered in Research Triangle Park, N.C., Syncfusion has more than 26,000+ customers and more than 1 million users, including large financial institutions, Fortune 500 companies, and global IT consultancies.
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