Why test a laptop in the browser?
Modern browsers can read every key press, play video, report the battery level and, with your permission, access the camera and microphone. That is enough to check most of a laptop without installing diagnostic software.
It is useful when something stops working, after a repair, and especially before buying a used laptop: you can run every test in a few minutes on the seller’s machine.
Your data stays on your device
Every test runs locally in your browser. Nothing you type, record or measure is uploaded to a server. Results and history are saved only in your browser storage and you can clear them at any time.
Frequently asked questions
Are these laptop tests free?
Yes. All tests are free and work without an account.
Do I need to install anything?
No. Any up-to-date browser works on Windows, macOS, Linux and ChromeOS. Chrome or Edge are recommended because they expose the most hardware information, such as the battery percentage.
Can I use these tests to check a used laptop before buying?
Yes. Open the site on the laptop you want to buy and run each test. It takes only a few minutes and does not change anything on the machine.