# Viewing PDFs

- Open a PDF
- Open secured PDFs
- Restrict URLs and attachments in PDFs
- Opening pages in a PDF
- Page through a document
- Automatically scroll through a document
- Retrace your viewing path
- Navigate with links
- PDFs with file attachments
- Open or close reading mode
- View PDFs in Full Screen mode
- Viewing PDFs in a web browser
- Read articles
- View document properties
- Viewing, sorting, and searching components in a PDF package
- View movies, sounds, and 3D models
- Preferences for viewing PDFs
- Searching
- Working with PDF layers