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Viewer ActiveX SDK is a fully featured, ready to incorporate facsimile of the End User PDF-XChange Viewer Pro, embedded within a Window of the developers application, the developer is able to hide and disable most of the controls and functions within the SDK and some GUI tailoring is possible - but Tracker Software branding is present and required from the 'About' Window of the embedded viewer.

Please note that as of 12th March 2021, this SDK product is no longer available to purchase, and maintenance agreements/product updates for it are expected to cease at the end of 2022. When all maintenance agreements have expired we will no longer be releasing any new SDK updates, although all existing products will continue to operate as normal. We thank you for your interest and use of these products, but they have come to represent a very small fraction of our sales revenue, and it has become clear that our business model should be updated to exclude them.


Viewer ActiveX SDK include all of the available Viewer PRO features:

Add Comments and Annotations to any PDF file (subject to security settings) - unlike the Adobe® Viewer which requires the PDF creation tool to be 'certified' by Adobe®
Add & apply Custom Stamps from any Image or PDF File and even your Windows Clip board !
Support for PDF File Attachments (portfolio)
Customize User Interface (Toolbar options etc)
Measurement Tools incl. perimeter and area
Mark-up pages with text and objects
Type directly on any PDF page, not just Adobe enabled forms documents - in Typewriter mode.
Export PDF pages or entire files to any one of the supported Image formats including BMP, JPEG, TIFF, PNG and many more ...
Extract text from a PDF page/File
Make your navigation of large or complex PDF files both simple and enjoyable with the extended functionality of our 'Loupe' and the 'Pan' Window tools
PDF Security Support including 40/128 bit RC4 and 128/256 bit AES Encryption Password and Permissions Add/Edit
Fill and Save Adobe Forms to disk, email or 'post' !
UI Customization (color scheme, borders, scroll bars visibility).
Full Javascript Engine included
Store/Restore of last opened files (last session)
Updated JPEG2000 Compression support - improving speed.
Plug-Ins for both MS IE or Firefox Browser's included
Integrate seamlessly with your favorite translation software to translate text on the 'fly' - including : ABBYY Lingvo 12, Translate It!, Lingoes.
Includes comprehensive Help file and PDF Manual - no extra downloads required to add features etc.
Send PDF files via email from viewer
Undo/Redo functionality for text editor
Set default viewing preferences for PDF files
Import/Export Reader default settings
Compatible with Windows 2000 and later (32/64 bit)
Ruler, Snap To Grid and Guidelines