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Word, Excel, PowerPoint Viewer SDK

Easily add accurate, reliable and fast support for Microsoft® Office formats to any software with PDFTron SDK, the first solution to view Office documents directly on any browser or app - no conversion or server dependencies required.

No Dependencies or MS Licenses

Support Word, Excel and PowerPoint formats without you or your users needing any MS Office software or MS Office licenses.

Standardize on a Universal Viewer

Enable real-time viewing and annotating of Office files and 20+ other formats across iOS, web, Windows, Mac, Linux and Android.


Let users view, annotate and print Office files, and convert to PDFs - all entirely client-side. Process Office files on all platforms and while offline without relying on external software.

Developed & Supported by PDFTron

PDFTron’s 100% supported SDK is built from the ground up and not dependent on any external solution. Get the support you need from our developers, along with ongoing updates, for the latest in Office document innovation, features and improvements.


Viewing Office Files (and 20+ Other Formats)

Ensure reliable, high-fidelity rendering of MS Office file types and 20+ other formats on all platforms and devices, including iOS, web, Linux and Android.

Real-time Collaboration

Have annotations from many users appear on the same Office document in real time while preserving an original version of the file. Manage annotations in a separate XFDF layer. Add roles, permissions or an audit trail.


Drop in or remove all types of existing annotations, including stamp, watermark, call-out, comment, free text, signatures and more. And add your own custom annotations and custom appearances.


Quickly generate compact page-one previews and thumbnails of Office documents, and have these currently viewable in any client for a user to browse through.

Stream In Linearized PDFs

Achieve first page view in seconds even with massive file sizes by streaming linearized PDF content into a client. Restrict downloading on Android to only those pages viewed to reduce data usage.

Add Even More Functionality

Speed time to market with the most complete PDF SDK on the market -- supporting all major platforms, 30+ file formats, and hundreds of unique features.

Code Samples - Convert Office to PDF for Viewing

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