Add Image Annotation to Document (Remote Path)

Introduction

In this tutorial, we’ll walk through the process of adding image annotations to a document using GroupDocs.Annotation for .NET. This library provides powerful tools for annotating various types of documents programmatically.

Prerequisites

Before we begin, make sure you have the following:

1. GroupDocs.Annotation for .NET: Download and install the library from here.
2. Development Environment: Ensure you have a working development environment set up for .NET development.
3. Document: Prepare the document you want to annotate. For this tutorial, we’ll assume you have a PDF document named input.pdf.
4. Image for Annotation: Choose the image you want to use for annotation. Ensure you have the image URL or local path ready.

Import Namespaces

Before we start coding, let’s import the necessary namespaces:

using System;
using System.IO;
using GroupDocs.Annotation.Models;
using GroupDocs.Annotation.Models.AnnotationModels;

Step 1: Set Output Path

First, define the output path where the annotated document will be saved.

string outputPath = Path.Combine("Your Document Directory", "result" + Path.GetExtension("input.pdf"));

Step 2: Initialize Annotator

Create an instance of the Annotator class and specify the input document.

using (Annotator annotator = new Annotator("input.pdf"))
{
    // Annotation code will go here
}

Step 3: Add Image Annotation

Now, let’s add the image annotation to the document. We’ll specify the properties of the image annotation such as position, opacity, page number, and image path.

ImageAnnotation image = new ImageAnnotation
{
    Box = new Rectangle(100, 100, 100, 100), // Specify the position of the annotation
    CreatedOn = DateTime.Now, // Set the creation date
    Opacity = 0.7, // Set opacity (0 to 1)
    PageNumber = 0, // Specify the page number
    ImagePath = "https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_92x30dp.png" // Provide the URL of the image
};
annotator.Add(image); // Add the image annotation

Step 4: Save Document

Save the annotated document to the specified output path.

annotator.Save(outputPath);

Step 5: Display Output Path

Inform the user about the successful document save operation and display the output path.

Console.WriteLine($"\nDocument saved successfully.\nCheck output in {outputPath}.");

Conclusion

In this tutorial, we’ve learned how to add image annotations to a document using GroupDocs.Annotation for .NET. By following these steps, you can enhance your document management applications with powerful annotation capabilities.

FAQ’s

Can GroupDocs.Annotation be used with other document formats besides PDF?

Yes, GroupDocs.Annotation supports various document formats including Word, Excel, PowerPoint, and more.

Is GroupDocs.Annotation compatible with .NET Core?

Yes, GroupDocs.Annotation is compatible with both .NET Framework and .NET Core.

Can I customize the appearance of annotations?

Yes, you can customize the appearance of annotations such as color, opacity, and size.

Does GroupDocs.Annotation support collaborative annotation features?

Yes, GroupDocs.Annotation offers collaborative annotation features for real-time collaboration on documents.

Is there a trial version available for testing?

Yes, you can get a free trial of GroupDocs.Annotation from here.