Like unit-testing, for performance


  docker pull loadimpact/k6
  cat script.js
  import { check } from "k6";
  import http from "k6/http";
  
  export default function() {
      let res = http.get("https://test.loadimpact.com/");
      check(res, {
          "is status 200": (r) => r.status === 200
      });
  };
  
  docker run -i loadimpact/k6 run -u 10 -d 30s -< script.js

k6 is a developer centric open source load and performance regression testing tool for testing the performance of your cloud native backend infrastructure: APIs, microservices, serverless, containers and websites. It’s built to integrate well into your development workflow and CI/CD automation pipelines.

Get Started

Modern

Written in Go and JavaScript, built to integrate well into the modern developer workflow and automation pipelines.

Flexible

Primarily for load testing, k6 also works for functional testing of APIs and microservices with its powerful JS ES6 based scripting API.

User friendly

Straightforward CLI, sharing many UX aspects with the DevOps tools you already use and love.

Demo

A short demo recording showing a simple k6 test script, test execution and summary results.

Demo of a open source load testing tool k6

Import from other open source tools

We have built tools to convert your existing JMeter tests and Postman collections.

Postman load testing

Reuse your existing Postman collections to load test with k6

Postman to k6

Go to repo

JMeter XML to k6 JS

Convert your existing JMeter tests to k6 JavaScript

JMeter to k6

Go to repo

Result Storage and Analysis

k6 can output more granular metrics than what is printed on stdout by default.
There are both open source options as well as a SaaS option from Load Impact, the creators of k6.