PDF is a file format that preserves the original layout and formatting across different devices and platforms. It is widely used for sharing documents, publishing e-books, and presenting reports due to its consistency and ability to preserve the document's integrity. PDF files can contain text, images, hyperlinks, and interactive elements, and they support encryption and digital signatures for enhanced security.
Annotations allow users to collaborate, review documents, and add information according to context. They enable reviewers to offer feedback, editors to propose changes, and collaborators to communicate without modifying the original text.
GroupDocs.Annotation is a fast and efficient API to annotate documents of over 35 different types. Powered by a high-performance cloud-based GroupDocs server, it allows annotating the PDF files in the browser.
This free online application based on the GroupDocs.Annotation API annotates the PDF files on your device. Even if your file is encrypted, you can enter a password and view the file. We value your privacy, so the file and the password you specified are visible to you only. The application works on any device, including smartphones.Video tutorial