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Chaos Frontend Toolkit
Chaos Frontend Toolkit helps teams test web apps by introducing failures to reveal ways to improve them.
About Chaos Frontend Toolkit
Chaos Frontend Toolkit is a browser extension that helps teams test web apps by deliberately introducing failures, which can reveal ways to improve them. It applies Chaos Engineering principles, usually used on infrastructure, to the front end of web applications.
The extension bundles tools for network, timers, history, accessibility, localization, and inputs. It is listed for Chrome, Firefox, and Edge, and a manual zip file is also offered. The source does not guarantee that the zip will work in browsers that are not listed. Pricing is not stated.
Key features
- Network tool intended to break your web app
- Timers tool intended to break your web app
- History tool intended to break your web app
- Accessibility tool intended to break your web app
- Localization tool intended to break your web app
- Inputs tool intended to break your web app
Best for: Frontend developers and teams that want to test how their web apps behave when conditions go wrong.
Good for
- Groups several failure-testing tools in one browser extension
- Listed for Chrome, Firefox, and Edge
Watch out for
- The manual zip file is not guaranteed to work in browsers that are not listed
Chaos Frontend Toolkit at a glance
- Category
- Development › Frontend Development
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Browser extension, Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Chaos Frontend Toolkit FAQ
Where does this idea come from?
The extension grew out of a talk given at Devfest Nantes in October 2021, titled "Art & Entropy: Introducing Chaos to your Frontend." Someone suggested bundling the talk's material into a web extension for easier use.
How do I install this extension?
It is available through most browser extension stores. Follow the store's instructions for your browser. If your browser is not listed, you can try the manual zip file, but it is not guaranteed to work.
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