Device test tools
Device test tools to check that your hardware works.
Check the devices on your computer or phone before a call, a stream, or a game. Each tool does one job and runs right in your browser, with no signup and nothing uploaded.
All device test tools
Mic Test
Check that your microphone works and hear how you sound
Speaker Test
Check your left and right speakers, bass, and treble
Headphone Test
Check left and right ears, 3D sound, balance, and earbud fit
Webcam Test
Check that your camera works and see its resolution and frame rate
Keyboard Test
Press every key to check that your keyboard works
Gamepad Tester
Test controller buttons, triggers, joysticks, and stick drift
Gamepad Vibration Test
Test each rumble and trigger motor on a game controller
Typing Speed Test
Check how many words per minute you type, and how accurately
Click Speed Test
Check how many times you can click per second
Mouse Double Click Test
Check if your mouse sends one click as two
Reaction Time Test
Measure how fast you react, in milliseconds
Refresh Rate Test
Check your screen's refresh rate in Hz
Screen Resolution Checker
See your screen resolution, scaling, and browser window size
Dead Pixel Test
Find dead and stuck pixels on your screen
Stuck Pixel Fixer
Flash colors over a stuck pixel to try to free it
Touch Screen Test
Check multi-touch, dead zones, and ghost touches on your screen
Guitar Tuner
Tune your guitar online with your microphone
Check your devices in seconds
A meeting, an interview, a live stream, or a ranked match is a bad time to find out something on your setup is not working. These tools let you check a device in a few seconds and see exactly what your computer receives from it, so you know whether the problem is the hardware or an app's settings. There is nothing to install and no account to create.
Private device test tools
Every test here runs locally in your browser. Whatever a test reads from your devices is processed on your own device and nothing is sent to a server. Anything you record or save stays in the page until you download or delete it, and it is gone when you close the page.
Frequently asked questions
- What are device test tools?
- They are quick checks for the hardware built into or connected to your computer, tablet, or phone. Each test tells you plainly whether a device works and shows what your browser receives from it. Each one does a single job, with nothing to set up.
- Are these tools free?
- Yes. Every tool here is completely free with no signup, no limits, and no watermarks. Use them as often as you like.
- Is my data kept private?
- Yes. These tests run entirely in your browser. Everything a test reads from your devices, such as sound, video, or key presses, is processed on your own device and never uploaded to a server. Anything you record or save stays on your device unless you download it.
- Do I need to install anything?
- No. The tests work in any modern web browser. If a test needs access to a device such as your camera or microphone, your browser asks for permission first, and you can say no.