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Everything you need for stress testing your websites

Website stress test

Quickly generate a stress test recording a web user session.

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Single Apps & API testing

Write tests in Javascript that mimic the user behavior on your website.

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Global testing

Generate a stress test from 17 geographic locations around the world.

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Rapid onboarding

Use the k6 Cloud UI to start your website stress test in seconds.

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Premium support

Get guidance and best practices on performance testing.

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On-demand availability

Scale your tests up to 100k virtual users with no infrastructure to manage.

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Engineering teams use k6 to prepare for high traffic

Very good load testing platform. We as a retailer got tremendous help with the load testing to survive Black Friday 2019. Biggest plus is that the tests can be run from command line, and are configured with code.

We can develop very dinamic scenarios with all the logic and customized metrics that one can think of. The k6 open source platform is quite straightforward and its configuration are fairly easy to implement in our scripts. Running scalable tests locally or using the cloud support is a breeze. k6 Cloud provides us with great knowledge and real-time graph to analyze every detail our projects' performance trends.

k6 is a great framework that's really enabled us to move quickly with load/performance testing. k6 Cloud has been a major upgrade in comparison to previous testing service — total test runs, quick and helpful responses to our support inquiries, good visualization of test results, active k6 community.

Overall, k6 strikes a good balance between scripting flexibility and execution performance. k6 also offers a comprehensive ecosystem beyond the test runner.

The success of a performance testing tool in large projects hinges on how it can be shared. k6 open source engine model is the key to achieve this. At the same time, its commercial cloud scaling enables you to push your application to its limit. k6 Javascript tests allows you to develop complex tests and debug performance problems across your organization. The engine is modern; you can feel the maturity of the design and its APIs. The Cloud user interface is intuitive and powerful. This praise would not be complete without underlining how quickly you can get up a running; in part to the efficient documentation and great support.

Best bang for the buck, well documented, and the code is available/open to the public. I would recommend Load Impact for any big or small projects.

We love the flexibility of k6. It can be adapted to provide whatever information we need, no matter how unique to our platform the situation is. We now have a performance testing framework which tells us exactly what our teams need to know and keeps a watchful eye on our code base for any performance issues that might slip in.

LoadImpact takes away the pain of setting up complex and distributed infrastructure to load test our application. It's a simple setup and doesn't need much maintenance (write once and reuse every year with a few config changes). The best part of Load Impact is the scheduler which helps us test during times with low user impact (internal and external). I'll definitely recommend their service to anyone who wants to run load tests quickly.

More than 6000 companies are using k6 for stress testing websites and APIs, including:

Amazon
Noaa
Serphora
Citrix
Microsoft

Not sure where to start?

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