Add Print Only Annotation Watermark to PDF

Introduction

In this tutorial, we’ll delve into the process of adding a print-only annotation watermark to a PDF using GroupDocs.Watermark for .NET. Watermarking documents is a crucial aspect of document security and branding, and GroupDocs.Watermark provides a seamless solution for .NET developers to achieve this.

Prerequisites

Before we get started, ensure you have the following prerequisites:

• Basic understanding of C# programming language.
• Visual Studio installed on your machine.
• GroupDocs.Watermark for .NET library installed in your project.

Import Namespaces

To begin, make sure you import the necessary namespaces:

using GroupDocs.Watermark.Options.Pdf;
using GroupDocs.Watermark.Watermarks;
using System.IO;
using System;

Step 1: Load the Document

Firstly, you need to load the PDF document that you want to watermark. Replace "Your Document Path" with the path to your PDF file and "Your Document Directory" with the directory where you want to save the output file.

string documentPath = "Your Document Path";
string outputDirectory = "Your Document Directory";
string outputFileName = Path.Combine(outputDirectory, Path.GetFileName(documentPath));
var loadOptions = new PdfLoadOptions();
using (Watermarker watermarker = new Watermarker(documentPath, loadOptions))
{
    // Watermarking code will be added here
}

Step 2: Add Watermark

Next, create a text watermark object with the desired text and font. Set isPrintOnly to true to ensure that the watermark is only visible when the document is printed, not in the view mode.

TextWatermark textWatermark = new TextWatermark("This is a print only test watermark. It won't appear in view mode.", new Font("Arial", 8));
bool isPrintOnly = true;

Step 3: Configure Watermark Options

Define options for the watermark, such as the page index where the watermark should be added and specifying it as a print-only annotation.

PdfAnnotationWatermarkOptions options = new PdfAnnotationWatermarkOptions();
options.PageIndex = 0;
options.PrintOnly = isPrintOnly;

Step 4: Apply Watermark

Add the watermark to the document using the specified options and save the output file.

watermarker.Add(textWatermark, options);
watermarker.Save(outputFileName);

Conclusion

In this tutorial, we learned how to add a print-only annotation watermark to a PDF document using GroupDocs.Watermark for .NET. This enables developers to enhance document security and branding with ease.

FAQ’s

Is GroupDocs.Watermark compatible with other document formats besides PDF?

Yes, GroupDocs.Watermark supports various document formats such as Word, Excel, PowerPoint, and images.

Can I customize the appearance of the watermark?

Certainly, GroupDocs.Watermark provides extensive options to customize watermark text, font, color, size, and positioning.

Does GroupDocs.Watermark offer batch processing capabilities?

Absolutely, developers can watermark multiple documents simultaneously using batch processing features.

Is there a trial version available for GroupDocs.Watermark?

Yes, you can access a free trial version of GroupDocs.Watermark from the provided link.

How can I get technical support for GroupDocs.Watermark?

You can seek technical assistance from the GroupDocs.Watermark forum available at the provided support link.