Welcome to LoadRunner Developer, Micro Focus' cutting-edge tool for web protocol performance and load testing. Powered by the DevWeb engine, LoadRunner Developer enables you to create and execute DevWeb protocol scripts, with the focus on communication at the HTTP transport level and over WebSocket. A variety of IDEs and tools can be used to create the scripts, which are coded using a new, innovative JavaScript SDK.

LoadRunner Developer is lightweight, scalable, cross-platform, and free to download and use.

You can also create and edit DevWeb scripts using the DevWeb protocol in VuGen. All DevWeb scripts can be executed with any of the LoadRunner family products: LoadRunner Professional (LRP), LoadRunner Enterprise (LRE), and LoadRunner Cloud (LRC).

Get started

Before you begin...

Learn about LoadRunner Developer capabilities, to gain a high-level picture of working with LoadRunner Developer and the DevWeb engine.

For details, see the LoadRunner Developer and DevWeb overview.

How do I use LoadRunner Developer?

The tutorial videos help you to get started, and familiarize you with the basic building blocks for LoadRunner Developer and the DevWeb engine. The videos provide step-by-step instructions for installation, script generation, working with the SDK, and more.

For details, see the Tutorial videos.

Tip: Also check out the blogs.


Use the example DevWeb scripts available in the <DevWeb root folder>\examples folder to experiment and develop. For example, you can use the scripts as a basis for creating your own scripts, or take code snippets to reuse.

Let's go!

When you're ready to begin, open LoadRunner Developer and start creating your script.

For details, see LoadRunner Developer workflow.

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Bookmark the Help Center

To ensure that you're always viewing the most up-to-date version of the LoadRunner Developer and DevWeb Help Center, bookmark this link: https://admhelp.microfocus.com/lrd.

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See also: