Online tests for your devices, browser and internet
Check your screen, keyboard, speakers, internet connection and browser in seconds. No installation and no sign-up: every test runs in your browser.
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Popular tests
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Screen Test
Test any monitor, laptop or phone screen for dead pixels, backlight bleed, uniformity and banding with a guided full-screen check and a plain-language summary. -
Dead Pixel Test
Find dead, stuck and bright pixels on any screen with nine full-screen colours, mark them and compare the count with the usual warranty tolerance. -
Keyboard Test
Test every key of your keyboard online: detect dead keys, key chatter and ghosting, and check how many keys work at the same time. -
Mouse Test
Test every mouse button and the scroll wheel online, detect unwanted double clicks from a worn switch and estimate the polling rate. Nothing to install. -
Touch Screen Test
Find dead zones on a phone or tablet touch screen and check how many fingers it detects at once with a full-screen multitouch test. -
Microphone Test
Test your microphone online: live level, a voice and background noise check, then record a clip and play it back. The audio never leaves your device. -
Speaker Test
Test speakers and headphones online: left and right channels, stereo balance, frequency sweep and white noise to reveal rattles. -
Webcam Test
Test your webcam or phone camera online: live picture, real resolution, measured frame rate and a lighting check. The video never leaves your device.
How TestrHub works
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Runs in your browser
Tests use the features built into your browser. Your files and results stay on your device unless you choose to share them.
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Free, no sign-up
Open a test and start straight away. There is nothing to install and no account to create.
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Honest results
Every result is explained in plain language, with its limits. Browser measurements are indicative, and our methodology explains why.