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About
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Product Overview
Getting Started
Features Overview
Supported Document Formats
System Requirements
Development Environment Installation and Configuration
Evaluation Limitations and Licensing of GroupDocs.Annotation
How to Run Examples
Annotation Use Cases
How to Add or Remove Annotations from PDF files using .NET
How to Add Text Annotations to PDF files using .NET
How to Add Special Annotations for PDF using .NET
How to get PDF document information and generate preview
How to control different versions of annotations in .NET
How to add watermarks to photo or documents in .NET
Developer Guide
Basic usage
Get supported file formats
Get file info
Add annotation to the document
Add area annotation
Add arrow annotation
Add distance annotation
Add ellipse annotation
Add highlight annotation
Add image annotation
Add link annotation
Add point annotation
Add polyline annotation
Add replacement annotation
Add resource redaction annotation
Add strikeout annotation
Add search text annotation
Add text field annotation
Add text redaction annotation
Add squiggly annotation
Add underline annotation
Add watermark annotation
Add component to the document
Add button component
Add checkbox component
Add dropdown component
Extract annotations from document
Remove annotation from document
Update annotations
Working with annotation replies
Add replies to annotation
Remove annotation replies
Update annotation replies
Advanced usage
Loading
Load password-protected documents
Loading documents from different sources
Load document from local disk
Load document from stream
Load document from URL
Load document from FTP
Load document from Amazon S3 Storage
Load document from Azure Blob Storage
Saving
Filtering annotation types on document save
Save only annotated pages
Save specific page range
Generate document pages preview
Versioning of annotated documents
Getting information about document content
Extracting image from image annotation
Comparing annotations using the equals method
Loading custom fonts for documents.
Put image annotations over the text (setting up ZIndex of image).
Set resolution (image quality) of document preview.
Change image quality
Export annotations
Import annotations
Rotating PDF documents
Migration Notes
Release Notes
Release Notes - 2022
GroupDocs.Annotation for .NET 22.1 Release Notes
GroupDocs.Annotation for .NET 22.3 Release Notes
GroupDocs.Annotation for .NET 22.4 Release Notes
GroupDocs.Annotation for .NET 22.5 Release Notes
Release Notes - 2021
GroupDocs.Annotation for .NET 21.12 Release Notes
GroupDocs.Annotation for .NET 21.11 Release Notes
GroupDocs.Annotation for .NET 21.10 Release Notes
GroupDocs.Annotation for .NET 21.9 Release Notes
GroupDocs.Annotation for .NET 21.8 Release Notes
GroupDocs.Annotation for .NET 21.7 Release Notes
GroupDocs.Annotation for .NET 21.6 Release Notes
GroupDocs.Annotation for .NET 21.5 Release Notes
GroupDocs.Annotation for .NET 21.4 Release Notes
GroupDocs.Annotation for .NET 21.3 Release Notes
GroupDocs.Annotation for .NET 21.2 Release Notes
GroupDocs.Annotation for .NET 21.1 Release Notes
Release Notes - 2020
GroupDocs.Annotation for .NET 20.11 Release Notes
GroupDocs.Annotation for .NET 20.10 Release Notes
GroupDocs.Annotation for .NET 20.9 Release Notes
GroupDocs.Annotation for .NET 20.8 Release Notes
GroupDocs.Annotation for .NET 20.7 Release Notes
GroupDocs.Annotation for .NET 20.6 Release Notes
GroupDocs.Annotation for .NET 20.5 Release Notes
GroupDocs.Annotation for .NET 20.4.1 Release Notes
GroupDocs.Annotation for .NET 20.4 Release Notes
GroupDocs.Annotation for .NET 20.2 Release Notes
GroupDocs.Annotation for .NET 20.1 Release Notes
Release Notes - 2019
GroupDocs.Annotation for .NET 19.12 Release Notes
GroupDocs.Annotation for .NET 19.11 Release Notes
GroupDocs.Annotation for .NET 19.10 Release Notes
GroupDocs.Annotation for .NET 19.9 Release Notes
GroupDocs.Annotation for .NET 19.6 Release Notes
GroupDocs.Annotation for .NET 19.4.1 Release Notes
GroupDocs.Annotation for .NET 19.4 Release Notes
GroupDocs.Annotation for .NET 19.3 Release Notes
GroupDocs.Annotation for .NET 19.1 Release Notes
Release Notes - 2018
GroupDocs.Annotation for .NET 18.12 Release Notes
GroupDocs.Annotation for .NET 18.10 Release Notes
GroupDocs.Annotation for .NET 18.9 Release Notes
GroupDocs.Annotation for .NET 18.8 Release Notes
GroupDocs.Annotation for .NET 18.7.1 Release Notes
GroupDocs.Annotation for .NET 18.7 Release Notes
GroupDocs.Annotation for .NET 18.6 Release Notes
GroupDocs.Annotation for .NET 18.5 Release Notes
GroupDocs.Annotation for .NET 18.4 Release Notes
GroupDocs.Annotation for .NET 18.3 Release Notes
GroupDocs.Annotation for .NET 18.2 Release Notes
GroupDocs.Annotation for .NET 18.1 Release Notes
Release Notes - 2017
GroupDocs.Annotation for .NET 17.12 Release Notes
GroupDocs.Annotation for .NET 17.11 Release Notes
GroupDocs.Annotation for .NET 17.10 Release Notes
GroupDocs.Annotation for .NET 17.8.0 Release Notes
GroupDocs.Annotation for .NET 17.7.0 Release Notes
GroupDocs.Annotation for .NET 17.6.0 Release Notes
GroupDocs.Annotation for .NET 17.5.0 Release Notes
GroupDocs.Annotation for .NET 17.4.0 Release Notes
GroupDocs.Annotation for .NET 17.3.0 Release Notes
GroupDocs.Annotation for .NET 17.2.0 Release Notes
GroupDocs.Annotation for .NET 17.1.0 Release Notes
Release Notes - 2016
GroupDocs.Annotation for .NET 16.12.0 Release Notes
GroupDocs.Annotation for .NET 16.11.0 Release Notes
GroupDocs.Annotation for .NET 16.10.0 Release Notes
GroupDocs.Annotation for .NET 3.2.1 Release Notes
GroupDocs.Annotation for .NET 3.2.0 Release Notes
GroupDocs.Annotation for .NET 3.1.0 Release Notes
GroupDocs.Annotation for .NET 3.0.0 Release Notes
Technical Support
Home
GroupDocs.Annotation Product Family
GroupDocs.Annotation for .NET
Getting Started
Getting Started
Features Overview
Supported Document Formats
System Requirements
Development Environment Installation and Configuration
Evaluation Limitations and Licensing of GroupDocs.Annotation
How to Run Examples
Annotation Use Cases
Product Overview
Features Overview