Important news: PDF OCR and PDF Reducer products sunsetting! – Learn more


Software to Compress & Reduce PDF File Size

PDF Reducer includes powerful, innovative and sophisticated features developed by worldwide recognized experts in document imaging.

Product Sunsetting News

ORPALIS PDF Reducer is a super fast and powerful PDF compression Software for general public and developers meant to help anyone to get existing PDF files reduced up to 80% more than concurrent products.
To achieve that, ORPALIS PDF Reducer provides different innovative and highly sophisticated size-reducing techniques which can be optionally applied by user selection:

Unrivaled lossless data re-compression

Innovative and highly sophisticated techniques which restructure existing content and apply the most effective compression scheme based on data type. Documents are printable and zoomable without loss of quality.
PDF Reducer is able to serialize several compression algorithms on images in order to (surpass) the limitations of some compression schemes.

Unrivaled lossless data re-compression

Remove unwanted or unused objects

You might have received PDFs containing additional, unwanted objects: let PDF Reducer remove them for you.

Remove unwanted or unused objects

Automatic color detection and layout analysis

Usually, scanning batches of papers under scanner's color-mode implies mixing together colored and B&W documents. PDF Reducer automatically identifies the B&W ones and encodes them as plain B&W thus dramatically reducing the file size.

Automatic ColorDetection

Raster images re-sampling and re-composing

Decrease un-necessary high resolution to dramatically reduce the file size without affecting the viewing experience.

Resampling and Recomposition

Content segmentation and optimal compression

Segments embedded images, separates text, finds similar bitmap sections and makes optimized recompression.

Content Segmentation

Fast web view support (linearization)

Add to your large PDFs the ability of being viewable for web-users even before the PDF file download is complete.

Fast Web Support

Input file formats

With PDF Reducer you can downsize a large variety of images and documents. Nearly 100 input files formats are now available besides PDF, including raster images formats such as TIFF, JPEG, PNG, JPEG 2000 and RAW camera formats.

Unrivaled lossless data re-compression

PDF/A conversion

PDF Reducer version 4 introduces PDF/A conversion support.
Once documents are processed, PDF Reducer offers the possibility to save as PDF/A, the ISO standard for long-term archival of electronic documents (ISO 19005).
All PDF/A versions and conformance levels are supported, including the latest PDF/A-4, based on PDF 2.0.

Multi Threading

Multi-threading support

Executes PDF processing via multiple, simultaneous and concurrent threads, decreasing processing time by using CPU resources most efficiently.

Multi Threading

Command line interface support

Automate PDF processing with commands without needing repetitive actions control via the GUI (graphic user interface).

Command Line

Unlimited batch processing

Executes PDF processing via multiple, simultaneous and concurrent threads, decreasing processing time by using CPU resources most efficiently.

Unlimited Batch Processing

Drag’n drop support

Do it fast, don't mind Windows Explorer.

Drag And Drop Support

Language & Interface

Default user interface language in ORPALIS PDF Reducer is English. Based on your Windows language settings, ORPALIS PDF Reducer automatically displays the localised version of the interface, if it exists among ORPALIS PDF Reducer translated interface versions. Currently, available languages for ORPALIS PDF Reducer interface are: English and French.

Language And Interface