Docotic.Pdf Library

Optimize new and existing files

With the library you can optimize your PDFs created in other applications or by other libraries.

The library can remove unused objects, recompress images or pack low-level PDF objects into object streams for you.

You can greatly reduce size of the PDFs output by the library using various save options.

Linearize PDF files

Produce PDF files optimized for fast web view with help of the library.

You can linearize files with any contents and they will open faster over the network or Internet connection.

Extract images

The library can be used to extract images from PDF files.

Extracted images can be saved as TIFF and JPEG images.

Library does not recompress images while extracting them. You will get images with the same quality as in PDF.

Password protection

Docotic.Pdf library can open and create documents encrypted with standard encryption algorithms.

You can remove encryption from your PDF documents. And of course you can protect produced PDF files using RC4 40-bit, RC4 128-bit and AES 128-bit encryption algorithms.

PDF permissions

You can setup what permissions you want to grant to users of you PDF files.

All permissions defined by the latest PDF standard are supported.

Take a look at short sample that shows how to setup user access permissions for a PDF document.

Read data from PDF forms

Docotic.Pdf library will help you to fill existing PDF forms.

You can read values of any form elements.

The library provides convenient method you can use to access form elements by their names.

Forms Data Format

You can import and export PDF forms data using Docotic.Pdf.

Forms data can be efficiently archived if you export FDF from existing files first.

You can always populate documents with existing data (say, fetched from a database) using import FDF feature of the library.

Link to PDF pages and external URLs

You can create links to document pages and external URLs with help of the Docotic.Pdf.

Links can have solid and dashed borders of any color (or no border at all).

Annotate PDF documents

Docotic.Pdf library can be used to add text annotations (sticky notes) to documents.

Seven predefined icon can be used for text annotations. Any sticky note can contain Unicode text. You can specify any color for annotations text and background.

Add actions to PDFs

You can create different types of actions and attach them to document pages and controls.

There is enough to choose from: hide, reset and submit form, import data, go to, URI and JavaScript actions are supported.

Compare PDF files

Docotic.Pdf library can compare PDF documents for you.

You can compare different versions of a document using one of the DocumentsAreEqual methods.

These methods compare all PDF objects ignoring some properties like trailer IDs and creator info.

Read and modify metadata

The library can be used to read and change standard PDF document properties and XMP metadata properties.

All standard properties (author, creator, keywords, producer, subject and title) can be read and changed.

Any XMP schema can be read and changed. Use Metadata property to access custom metadata properties, well-known schemas like XMP Core / XMP Basic and Dublin Core, and other schemas.

Add labels to PDF pages

The library can read and create PDF page labels.

Using methods and properties of Docotic.Pdf you can add different kinds of labels to pages of your PDFs. You can mark pages with roman numerals or uppercase letters, for example.

Setup page size and properties

You can specify any size in pixels for any page in your documents. Or you can use one of predefined page sizes like A4, Legal or Folio.

Additional properties like orientation of a page (portrait or landscape) and rotation can also be easily set.

Please take a look at the sample that shows how you can setup various PDF page properties.

Add, remove or reorder PDF pages

You can add new pages to PDF documents or remove existing ones with help of the library.

Take a look at samples that show how to add new pages and insert or remove existing PDF pages.

You can also change order of pages in your PDF documents.

Optimize images in PDFs

Docotic.Pdf library can be used to optimize images in PDF documents.

You can recompress existing images and any images you want to add to a PDF document.

Images can be recompressed using JPEG, CCITT Group 3 and 4 (fax) and zip/deflate compression algorithms or completely uncompressed.

Use legacy and non-standard images

The library supports images produced by legacy hardware like scanners and faxes.

In most cases you'll be able to use non-standard images that cannot be properly opened by image-related methods and classes in .NET framework.

Docotic.Pdf can even use partially broken images in some cases.

Add colors and patterns

You can use Gray, RGB and CMYK colors and tiling patterns to fill or stroke shapes and paths in your PDF documents.

The library can use color profiles to create calibrated colors.

Use transparency and watermarks

Semi-transparent colors and watermarks can be used to achieve nice visual effects.

You can specify how semi-transparent objects will blend on a canvas using set of predefined blend modes.

Each watermark has its own canvas, so you can create watermarks as complex as regular PDF pages.

Use a font and language you need

Docotic.Pdf library can draw Unicode text using Type1, TrueType and OpenType fonts.

You can use any font installed on your system, 14 built-in Type1 fonts or load a required font from a file.

The library can embed fonts into produced PDF documents.