Add a rubber stamp annotation with a custom icon

For some applications it is necessary to add a customized annotation to a PDF document. With PDFKit and PDFControls this is possible. The PDF standard includes a “rubber stamp annotation”. It displays text or graphics intended to look as if they were stamped on the page with a rubber stamp. For this rubber stamp there are a few standard appearances, but it is also possible to change the appearance by applying an icon. This article shows how to create a customized rubber stamp annotation.

Rubber Stamp With Custom Icon In Pdf

Step 1: Create an icon

First we create a shape collection, then create and image shape from a .png file and add this to the shape collection

//create a shape collection
var icon_shapes = new ShapeCollection(15, 15);

//create an image shape and add it to the shape collection
icon_shapes.Add(new ImageShape("../../CustomStamp.png"));

Step 2: Create a rubber stamp

We create a stamp and use the created shape collection to set the icon of the stamp

//create a stamp
var stamp = new Stamp(null, 100, 600, 40, 40)
{
    Text = "This page is empty."
};

//change the icon of the stamp to the created shape collection
stamp.SetIcon(icon_shapes);

//create a popup and assign it to the stamp
stamp.Popup = new Popup(140, 500, 200, 100) { Open = true };

Step 3: Create a pdf document with the stamp

We create a PDF document and add the stamp to it.

//create new document
var document = new Document();

//create a page and add to the document
var page = new Page(PageSize.Letter);
document.Pages.Add(page);

... // Here comes the code to create the stamp

//add the stamp to the page
page.Markups.Add(stamp);

//write the PDF document to the disk
const string fileName = @"..\..\CustomAnnotation.pdf";
using (var file = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
    document.Write(file);
}

// open the PDF document
Process.Start(fileName);

The sample shows that the icon of a stamp can be changed. In this sample a shape collection with an image shape is used. When setting the icon for the stamp, it expects a shape collection. As a consequence, you are not restricted to creating an icon from a .png file. You can freely create shapes. Create the shapes you want and present them in a shape collection. The stamp can be resized by setting the width and heigth.

Download PDFKit.NET 5.0
We will send you a download link
Why do we ask your email address?
We send tips that speed up your evaluation
We let you know about bug fixes
You can always unsubscribe with one click
We never share your address with a 3rd party
Thank you for your download

We have sent an email with a download link. Alternatively, you may want to use the NuGet package manager to install our library.

Nuget ID

Use the NugetID and start right away, or download the package and install it handmatically