Flood Chrome provides an API for scripting Browser Level Load Tests


060.3.13 years ago4 years agoMinified + gzip package size for @flood/chrome in KB



Flood Chrome brings the familiar power of traditional browser scripting tools with the proven performance of Flood to create an easy to use and maintainable performance testing tool.

Flood Chrome works by spinning up hundreds or even thousands of instances of Google Chrome, and running scripts you define here to drive a load test. We can this Browser Level Load Testing.

This project is currently in beta and APIs are subject to change.

Flood Chrome Example code


First, make sure you have installed the latest version of NodeJS for your platform.

1. Download Flood CLI

On macOS, install using homebrew:

brew install flood-io/taps/flood

On linux, download the latest release for your platform, then extract and install it:

# assuming you're installing version 1.0.0 on linux
cd ~/Downloads
mkdir flood
tar zxvf flood-1.0.0-linux-amd64.zip -C flood

# move the file to somewhere on your $PATH:
mv flood/flood /usr/local/bin/flood

# optionally, tidy up:
rm -rf flood

On Windows:

We're still working on a Windows build, stay tuned.

2. Initialize Project

The very first thing you should do is authenticate the flood tool with your Flood account. If you don't have an account, you can sign up for free at Flood.

# Login
flood login

# Initialize a new project
flood init my-flood-chrome-test

# Change to this directory and install dependencies
cd my-flood-chrome-test
yarn install

3. Write and validate your script

Edit test.ts in your editor of choice. To learn more about the scripting capabilities we've put together a detailed tutorial on testing the "Flood Merchandice Store".

As you're writing your script, you can validate it by running it on the Flood validation service:

flood verify test.ts

This will output a detailed list of steps and configuration options it has read from your script, then execute it within the Flood Chrome Environment.

4. Run a real Load Test on Flood

Now that you have a test script, upload it to Flood as a new Stream and launch a Flood (a test).

Upload your script to Tricentis Flood

Continue learning more Flood Chrome techniques by starting with our API documentation. The main entry point to all tests is the <[Browser]> class and a great place to get a feel for the capabilities of each test.


Over the years, countless customers have mentioned that getting started with Load Testing is a daunting task. That's why it's often left until the last minute before launch. At Flood, it's our mission to make Load Testing less daunting and accessible to everyone. We want to give developers and testers an easy way to ensure that whatever part of the system they're responsible for meets expectations for both functionality and performance.

What can I do with it?

  • Flood Chrome can be used to put load on any web accessible application and measure how it performs as load is ramped up,
  • Measure performance regressions after deploys by integrating it with you CI/CD pipeline,
  • Measure how your application's response time from different regions as experienced by your customers,
  • Create realistic load scenarios which stress test your network infrastructure without developing a complex protocol level load test scripts.


Reporting Issues

If you encounter any issues with the @flood/chrome project or Flood Chrome product, please open an issue on the GitHub project.

If you're encountering issues with Flood itself, please contact Flood Support from within the Flood Dashboard.

If you find any bugs or have a feature request, please open an issue on github!

The npm package download data comes from npm's download counts api and package details come from npms.io.