ORPALIS is pleased to announce the released of GdPicture.NET PDF Reducer SDK, a complete PDF optimization engine, which is included in its flagship product GdPicture.NET Document Imaging SDK. More than 10 years of continuous research have been required by the company to address all areas of compression and optimization, with a focus on font optimization, data compression, and image analysis.

Muret, France, July 22nd

PDF Optimization is dependent on the context and purpose of documents. Every organization has different specifications to manage, sometimes required by the industry, sometimes by law, or by internal usage.

The PDF Optimization SDK is suitable for all contexts: electronic document exchange, document archiving, pre-press, and any customized configuration. Indeed, each feature can be enabled or disabled as required.

The GdPicture PDF Reducer SDK includes the following features:

General compression

  • Unused objects removal
  • Content stream compression
  • Object streams generation

Content removal

  • Blank page
  • JavaScript
  • Metadata
  • Thumbnails
  • Form fields
  • Annotations
  • Bookmarks
  • Embedded files
  • Hyperlinks

Control image compression

  • Automatic image re-compression
  • High-quality image downscaling
  • Manage compression scheme: Zlib/deflate, CCITT, JBIG2, JPEG, JPEG 2000

Advanced image compression

The hyper-compression engine can be tested online with the AvePDF web application.

  • Font Data Stream Compression
  • Subsetting font programs to contain only the used glyphs
  • Font Data Table Reduction
  • Font Merging

Other quality enhancement features

  • Fast web view (linearization)
  • Repair characters

More information about PDF Optimization methods are available in an article based on a presentation held at the PDF Day – France in April 2018. The article can be downloaded for free on the PDF Optimization page.

GdPicture.NET Document Imaging SDK can be tested for 60 days on the GdPicture website.


ORPALIS is specialized in automating large-scale document-based processes, providing document imaging and document-management toolkits as well as software tools for the general public. ORPALIS is the creator, developer, and owner of the comprehensive document imaging toolkit series released under the brand “GdPicture”, now a worldwide known and respected leader in the imaging technologies industry. More than 13,000 developers based in over 70 countries have included GdPicture components in their applications. In 2011 ORPALIS releases PaperScan, marking the beginning of a new line of products meant for end-users. PDF Reducer is launched in 2013. In 2015 a most powerful universal HTML5 viewer and document management kit called DocuVieware is made available to the public. The same year, a software tool for converting scanned documents to the searchable PDF/OCR format, the ORPALIS PDF OCR, is launched. In 2016 DocuVieware Lite Free HTML5 Document Viewer is released. PassportPDF, released in 2018, is a modern cloud infrastructure offering freemium microservices via the AvePDF web application which addresses document management challenges of professional and general public users.

orpalis.com / gdpicture.com / docuvieware.com / avepdf.com