About TestIt
The free, private, no-install hardware diagnostic suite that runs entirely in your browser.
What is TestIt?
TestIt is a comprehensive, browser-based hardware diagnostic platform that lets you test every major component of your device without downloading a single piece of software. From your microphone and webcam to your internet connection, keyboard, monitor refresh rate, reaction time, and more — TestIt covers it all in one clean interface. Every test runs locally in your browser, which means your data stays on your device and is never sent to any server without your explicit consent.
Who is it for?
TestIt is built for everyone — from everyday users troubleshooting a crackling microphone before a video call, to IT professionals verifying hardware across a fleet of machines, to tech enthusiasts who simply want to know exactly what their device is capable of. Whether you're setting up a new laptop, preparing for a streaming session, or diagnosing a connectivity issue, TestIt gives you the tools you need in seconds, with no account required.
Who builds it?
TestIt was created and is maintained by Lucas Rak, an independent developer passionate about making powerful developer tools accessible to everyone. The goal has always been simple: give people a fast, trustworthy, and beautiful way to understand their hardware — for free, forever. TestIt is continuously updated with new tests, AI-powered analysis features, and quality-of-life improvements based on community feedback.
