The viewer is a viewing and rasterization scroll view component that handles a number of viewing operations including rendering, caching, high level zoom rendering and layout modes.

Viewing represents reading a document and displaying it as the author intended. Through the process of rasterization, it can take document data and convert it into pixels that come together to be rendered on a display.

PDFTron SDK offers the following benefits:

• Interactive PDF Viewing or Rasterization
• Full transparency support (Transparency Groups, Soft Masks, including all supported Blend Modes)
• Core viewing operations (scrolling, panning, zooming, jumping to pages)
• Standard & custom page viewing modes (e.g. single, facing, cover, scrolling, fit-page, fit-width, etc.)
• Extensive support for PDF forms & digital signatures
• Extensive annotation & real-time collaboration support
• Regex text search across a page or an entire document
• Manipulate pages (rotate, crop, move, copy/export, delete, merge documents)
• View PDF separations
• Easy navigation (with thumbnails, bookmarks, links, and history)
• Selective viewing and hiding of contents in different layers (OCGs)
• Security settings (custom encryption & DRM controls, dynamic watermarks)
• PDF/A viewing mode
• Support for R2L (Right to Left) languages (e.g. Arabic, Hebrew, etc)
• Keyboard shortcuts

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View a document
To view a PDF document.

Coordinates
To convert between PDF page and screen coordinates.