PDFs can also be interactive or contain forms, if desired and they can be partially or completely edited by peers. Part of their popularity is that they, in theory, cost nothing to produce and assure that documents will appear the same to anyone, anytime anywhere. Its viewer is compatible with Wine, which provides another way to annotate PDFs on Linux.PDF has become one of the most common file types, one that’s popular among businesses attempting to go 'green' or 'paperless', as well as popular for sharing documents on web sites. They support these programming languages: C++, C#, C, the classic Visual Basic, the modern Visual Basic, Delphi, and Clarion. They enable creation, manipulation, reading, writing, OCR, search, and display of PDF contents in other applications. Several PDF-related SDKs are available for developers, including: PDF Tools SDK, PDF-XChange Viewer SDK, PDF-XChange Drivers SDK, and Image SDKs. PDF-XChange Standard brings advanced PDF creation options. Its Lite print driver enables the creation of PDF files from any Windows app that supports printing. The viewer added OCR support as of version 2.5.

Since version 2.5, there has been partial support for XFA, and exporting form data in XML Data Package (XDP) or XML format. It supports saving PDF forms ( AcroForms), and import or export form data in FDF/ XFDF format. Its further development has been stopped in favour of the freemium PDF-XChange Editor.

It was available in a free and a paid version. PDF-XChange Viewer (now superseded by the PDF-XChange Editor) is a freemium PDF reader for Microsoft Windows.

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