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XEP Engine

 At the heart of each RenderX publishing solution is RenderX XEP Engine. XEP is built around the mature, high-quality formatting kernel developed by RenderX and which has passed many years of deployment in a wide range of environments. XEP is continually improved in the quality of formatting, standards' conformance, support for advanced features and in compliance to strict requirements to the formatted output of print-ready materials.

XEP core product comes with support for output of PDF, PDF/X, PDF/A, PostScript and our own XML output capabilities. Additional output modules are available as add-ons to the core product. These include PDF Forms, AFP, Microsoft XPS, PPML, SVG and HTML formats.

XEP User Guide

XSL Tutorial

XEP is an XSL FO (XSLFO) and SVG processor. It takes input in XML, applies an XSL transformation to build XSL Formatting Objects representation, and then formats the Formatting Objects into all formats supported. XEP supports multiple raster and vector graphic formats. Among them, Scalable Vector Graphics (SVG) is an XML-based vector graphics representation, widely used in business applications and for fine typesetting.


XSL 1.0 Recommendation

SVG 1.1 Specification

Adobe PDF


XEP conforms to Extensible Stylesheet Language (XSL) Version 1.0, a W3C recommendation. It also supports a subset of Scalable Vector Graphics (SVG) 1.1 Specification. XEP outputs formatted documents in Adobe PDF version 1.3 (with optional support for features from newer versions) and PostScript level 2 or 3 formats.

The XEP Engine is written in Java and runs on most Unixes, Microsoft Windows, Linux, Mac OS X and other systems where Java Virtual Machine 1.1.8 or newer is available.

Licensing Information

XEP Engine is available in two license models, XEP Desktop and XEP Server.


XEP Desktop

XEP Desktop is for casual use by a single user installed on a desktop computer. Authors call it from their XML editors like jEdit, Emacs, oXygen or XMetaL to format books and manuals they are writing.

XEP Desktop is licensed for use by an individual on a single desktop machine with discounts available for packages of licenses for workgroups or organizations. XEP Desktop can be purchased from our online shop or  contact sales about volume discounts.


XEP Server

XEP Server is for high-volume, multi-user or batch formatting in server-side applications. XEP Server generates rich reports from databases, prints high volumes of personalized correspondence and provides on-line creation of dynamic, customized documents.

XEP Server is licensed by CPU of the server environment with discounts for purchases of multiple CPU licenses.

Extended Support is available with server purchases. Extended Support customers enjoy free access to all point releases for feature enhancements and bug fixes within the current major version. Current Extended Support customers also are granted new major releases at a significant discount off list price. Purchase of Extended Support includes a free integration kit and special integration assistance for your project. Contact sales for a custom quote based on your configuration and use.

Pricing Information

Purchase Online!

Please see our current price list for more details on RenderX packaged solutions. This information serves as a guide for end-users of our software, for other arrangements like OEM or reseller contracts, please contact sales.


XEP Desktop

XEP Desktop is USD $400.00 for a single copy with discounts available for package purchases. Please see our current price list for further details.XEP desktop can be purchased from our online shop or contact sales for more information.


XEP Server

XEP Server is USD $4,750.00 per CPU Single-Core of the production machine with discounts available for multiple CPU and CPU-Core purchases. For all initial purchases, either one integration kit or Extended Support is required. Extended Support is 20% of software purchase annually. Please see our current price list for further details. XEP Server can be purchased from our online shop or contact sales for more information.



October 8, 2015
VDPMill 4.1 released

Unattended installation support.
EnMasse 2.4 / XEP 4.24.
More news...

August 6, 2015
EnMasse 2.4 released

Improved stability on Linux;
3rd-party XSLT-transformers;
cross-domain formatting.
More news...

February 18, 2015
XEP 4.24 released

New RenderX extension:
page scaling in PDF backend;
bugfixes related to:
SVG, PDF images, accessibility.
More news...

January 16, 2015
VisualXSL 2.4.6 released

x64 platform reliability.
Paragraph Editor bugfix.
Display Font Size bugfix.
More news...

July 15, 2014
XEP 4.23 released

Improved Sec. 508 accessibility:
new RenderX extensions;
relaxed input requirements; several bugfixes in SVG;
DocBench: oXygen Editor 16
More news...

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