Foxit PDF SDK provides a range of encryption and decryption functions to meet different levels of document security protection. Users can use regular password encryption and certificate-driven encryption, or use their own security...

A watermark is a type of PDF annotation and is widely used in PDF documents. A watermark is a visible embedded overlay on a document consisting of text, a logo, or a copyright notice. The purpose of a watermark is to brand your wo...

PDF currently supports two different forms for gathering information interactively from the user - AcroForms and XFA forms. AcroForms are the original PDF-based fillable forms, based on PDF architecture. Foxit PDF SDK provides API...

Bookmark Foxit PDF SDK provides navigational tools called Bookmarks to allow users to quickly locate and link their point of interest within a PDF document. PDF bookmarks are also called outline, and each bookmark contains a desti...

Text Page Foxit PDF SDK provides APIs to extract, select, search and retrieve text in PDF documents. PDF text contents are stored in TextPage objects which are related to a specific page. The TextPage class can be used to retrieve...

With Foxit PDF SDK, attachments refer to documents rather than file attachment annotations. This allows whole files to be embedded in a document, much like email attachments. PDF SDK provides application APIs to access functions s...

The PDF Signature module can be used to create and sign with digital signatures for PDF documents. This protects the security of documents and prevents it from being tampered with maliciously. It can let the receiver ensure that t...

General An annotation associates an object such as note, line, and highlight with a location on a page of a PDF document. It provides a way to interact with users by means of the mouse and keyboard. PDF includes a wide variety of ...

PDF rendering is realized through the Foxit renderer, a graphics engine that is used to render a page to a bitmap or platform graphics device. Foxit PDF SDK provides APIs to set rendering options/flags. As an example, you can set ...