Internet speed test
Measure download speed and latency for your connection.
Device tests
Find the right tool and get straight to your task.
No account needed.Microphone test
Check the input level from your microphone.
Webcam test
Preview your webcam in the browser.
Keyboard test
Check which key and modifier signals your browser receives.
Screen test
Inspect your screen using solid colors.
Screenshot capture
Capture an image of a screen or window you choose.
About device tests
These free online device tests help you check hardware and your connection before a call, a stream or a purchase. The Internet speed test measures download speed, upload speed and latency. The Microphone test and Webcam test confirm that your browser can see and hear your devices, the Keyboard test shows which keys register, and the Screen test helps you spot dead pixels or backlight bleed. Screenshot capture saves a still of a screen, window or tab.
Run the test that matches your problem, and close other apps that might be using the same device or bandwidth. If a microphone or camera does not appear, check browser permissions first, then the system settings.
Popular device tests
Common questions
Does the speed test contact other services?
Yes. The Internet speed test has to send and receive data through a test provider to measure your connection. That provider receives the connection details it needs, including your public IP address. Results also vary with Wi-Fi, VPNs and other traffic on your network.
Why does my browser ask for camera or microphone permission?
The Webcam test, Microphone test and Screenshot capture need device or screen access to work. Your browser asks only after you start a test. You can deny access, and you can revoke it later in your browser or system settings.
Do the keyboard and screen tests need any permissions?
No. The Keyboard test and Screen test run in your browser without camera, microphone or screen sharing access. The keyboard test reads key presses only while the page is focused, and nothing you type is sent to our server.