The Toolkit 11.4.1 release (Build contains a new call and bug fixes.

Software Requirements

The following software is required to successfully use Toolkit.

Operating Systems Supported

  • Windows Server® 2012 R2, 2016, or 2019
  • Microsoft Windows® 10

Additional Software

  • Microsoft® .NET Framework 4.5 or higher is required to use Toolkit's .NET component
  • Visual Studio C++ 2015 Redistributable

Note: If you are installing an ActivePDF product on a Windows 2012 R2 server, you need to download and install two Microsoft updates for Windows 2012 R2 servers. These updates resolve issues with the Microsoft Visual 2015 C++ Redistributable Runtime Components. For links and step-by-step instructions, see this ActivePDF Knowledge Base article: Installing Toolkit on Windows 2012 Servers.

Hardware Requirements

The minimum hardware requirements for Toolkit are:

Server and desktop

  • 125 MB of RAM
  • 100 MB of hard disk space (for application)

New Features and Enhancements

New features and enhancements to this release include a new call.

  • New Toolkit object call: The Toolkit object has a new method, IsFileSigned, which determines if a PDF has cryptographically signed digital signatures.

Features not in Toolkit 11.4.1, but may be considered in future releases:

  • Flash
  • Metadata Management
  • Text Extraction
  • Redaction
  • Text To PDF Conversion

Although the documentation is available for these objects, the objects themselves are not connected, and will not work. For more information, contact the ActivePDF Support team.

Important Note: If you have an existing Toolkit installation and are using the objects listed above, do not upgrade to Toolkit 11.1.0 or later. You will lose access to these objects.

Bug Fixes

The following bugs were resolved since the last release.

ID #Description


BoundingBoxWidth and BoundingBoxHeight incorrect (COM ONLY).


Need to click on the non-flattened fields to see content after using TK.FlattenRemainingFormFields = 1.

22249SetOutputRotation fails all pages.
22251Field value appears rotated when focused.
22253Unable to merge signed PDF.
22256Double-byte characters incorrectly formatted with SetCustomDocInfo.
22257MergeFile fails with -1.
22259AnnotationManager AddInternalLink unable to set AnnotationProperties.
22262Field data is rotated when flattening form fields.
22263Field background color not visible (change in behavior).
22271Incorrect data when field is focused.
22276Data rotated when added to field.
22278Bookmarks, sticky notes wrong.
22279SetFormFieldData image issue.
22280Field data in wrong location when flattened.
22281AddInternalLink wrong page.
22306Yellow image covering up certain text fields in the PDF.
22309GetUniqueFileName returns empty string.


Installation and API information is available in the Toolkit API Reference Guide.

Legacy Documentation

Documentation for all prior releases is available on the Toolkit Legacy Documentation page.


To download the Toolkit and Toolkit Ultimate examples, visit the GitHub ActivePDF page.

Toolkit Installer

Use the following links to download the ActivePDF Toolkit or Toolkit Ultimate installers.