Using ImageGear.Formats.PDF Namespace

The Postscript (PS) language is a simple, interpretive programming language with powerful graphics capabilities. Its primary application is to describe the appearance of text, graphical shapes and sampled images on printed or displayed pages, according to the Adobe imaging model. A program in this language can communicate a description of a document from a composition system to a printing system or control the appearance of text and graphics on a display. The description is high-level and device-independent.

The Adobe Portable Document Format (PDF) is the native file format of the Adobe Acrobat family of products. PDF relies on the same imaging model as the PostScript page description language to describe text and graphics in a device-independent and resolution-independent manner. A document can be converted straightforwardly between PDF and the PostScript language; the two representations produce the same output when printed. To improve performance for interactive viewing, PDF defines a more structured format than that used by most PostScript language programs. PDF also includes objects, such as annotations and hypertext links that are not part of the page itself but are useful for interactive viewing and document interchange. However, PDF lacks the general-purpose programming language framework of the PostScript language.

The ImageGear.Formats.PDF namespace allows you to load, save and process native PDF and PostScript documents. It also allows rasterization of PDF and PostScript documents, by converting them to bitmap, and provides you with the possibility of text extraction from loaded PDF and PostScript documents.

PDF support is compatible with Adobe PDF v1.7 as defined in the Portable Document Format Reference Manual Version 1.7, distributed by Adobe Systems, Incorporated. It provides reading capability up to the PDF v1.7 and writing of PDF v1.7 documents.

PostScript support is compatible with Adobe PostScript (TM) 3.0 language as defined in the PostScript Format Reference Manual, distributed by Adobe Systems, Incorporated. It provides reading capability up to the PostScript 3.0 Language, Level 3, and writing of the PostScript 3.0 files with Language Levels 1, 2 and 3. This includes writing of Encapsulated PostScript (EPS) files with standard and extended preview as well as without preview at all.

The ImageGear.Formats.PDF namespace provides full multi-page reading and writing support for the entire document as well as specified set of pages. You can detect, read, write, append, insert, replace, swap and delete a specified page in the PDF document as well as to edit its content.

To enable the ImageGear.Formats.PDF Namespace in your project, specify the following directive:

C#	Copy Code
using ImageGear.Formats.PDF;

This section provides information about the following: