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Android / Guides / Overview

PDF Viewer Library for Android

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.

Apryse 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

More features:

  • PDF Image Export (JPEG, TIFF, PNG, and BMP)
  • Advanced image quality and compression settings controlling the rasterization process, allowing the user to choose between the output image quality and rendering speed
  • Reflow
  • Night, sepia and custom-color mode
  • ICC color management
  • Overprint control & preview
  • Display-list caching (speeding-up viewing of complex documents)
  • Direct & serverless rendering support for PDF, Word, PowerPoint, Excel, XPS, plain-text, mark-down, TIFF, and other image formats
  • PDF package support
  • Pressure-sensitive stylus support
  • Infinite Undo/Redo
  • Text to Speech Support
  • Font-substitution control

Get started

View hierarchy
An introduction to the viewer hierarchy for multiple layers of viewing display control.

Config viewer
To configure the document viewer for customizations.

Custom viewer
To configure the PDFViewCtrl for customizations.

View mode
To change the view display mode such as layout, fit, reflow, or to present a UI dialog.

Scroll direction
To change the scroll direction by setting the page presentation mode.

Color modes
To change the color mode presentation to assistance in document readability/accessibility.

Events/triggers
To use events to listen for relevant interactions and changes in the viewer.

Stream PDF
To show a document on-demand as it is partially downloaded providing a fast and responsive viewing experience.

Right to left
To configure the reading direction of documents in the viewer.

Coordinates
An introduction to coordinate systems such screen, page, or scrolling coordinates.

Localization
An introduction to localization and translation resources.

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