.NET PDF Compression Library

JBIG2 Compression

The JBIG2 features support single and multipage JBIG2 format and adds support for compression in PDF documents. The encoding part is based on a constantly improved compression engine which can be used to compress image either in lossless or lossy mode.

Main Features

• Read and write single and multiple page JBIG2 image.
• Convert from more than 100 document formats to JBIG2.
• Enhance PDF compression using the JBIG2Decode filter instead of CCITTFaxDecode.
• Support for lossless compression.
• Support for lossy compression with a very sophisticated pattern matching and substitution engine (based on full page layout analysis) to prevent as much as possible undesired substitutions.
• Compress 2 – 5 times more than CCITT4.

Examples of usage

Converting a multipage TIFF file to a multipage JBIG2 file

Using JBIG2 compression when converting TIFF images to PDF documents

Learn more about JBIG2

Color Detection

Automatic color detection allows your applications to automatically detect the original color of documents scanned in color mode and convert the B/W and/or grayscale ones to the appropriate bpp (bits-per-pixel) encoding.
It allows users to develop applications...requiring automatic quality vs.size optimization for image files based on automatic identification of color.
Thus allowing preservation of image quality while considerably reducing the file size. By using Automatic Color Detection plugin, your application will be able to perform very fast and unattended optimizations of image and PDF archives.

Main Features

• The Hyper-Compression Plugin includes JBIG2 encoding features. Learn more
• Detects color scheme of a bitmap (bitonal, grayscale or color).
• Acquires any kind of document from scanner and automatically applies most suitable color space.
• AnyCPU: available in 32 bit and 64 bit versions.
• Can work in multi-thread applications.

Examples of usage

Converting a multipage PDF document to a multipage TIFF file using Color Detection

Re-compress an existing PDF using Color Detection

Mixed Raster Content Compression

MRC compression helps to produce better file compression by improving the document perception, especially with characters and shapes using continuous tones. It works on any kind of document including forms, photos, vectors, and more.