Blog
Tests
Guides for testing your keyboard, mouse, screen, sound, network and other hardware, and for fixing what the tests find.
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Tests
How to check if your browser supports screen sharing
Check whether your browser can share a screen, try it safely, and fix common permission or device limits without installing anything.
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Tests
Why a website keeps asking for camera permission
Find out why a site keeps requesting camera access, check whether your browser remembers it, and fix permission settings on your computer or phone.
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Tests
Why your mouse cursor skips or stutters
Find out whether a skipping mouse cursor comes from the surface, connection, settings or hardware, then work through the fixes in order.
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Tests
Why internet speeds differ across devices
Learn why one phone or computer gets slower internet than another, how to compare them fairly, and what to change when the gap is real.
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Tests
Internet disconnects for seconds: how to catch it
Catch brief internet dropouts with a browser stability test, see whether they affect one device or the whole network, and choose the right fix.
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Tests
How to test a used MIDI controller before buying
Check every key, knob, pedal, and connection on a used MIDI controller before you buy, with a browser test and a quick physical inspection.
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Tests
What to check before selling your old laptop
Run a browser check of the keyboard, screen, ports, camera and more, then back up, erase your data and list the laptop honestly before handing it to its next owner.
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Tests
Laptop upgrade checklist: what to check first
Check your laptop's upgrade limits, battery, memory, storage and temperatures before buying parts, so you know whether an upgrade will solve the problem.
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Tests
Why laptop function keys do not register online
Learn why laptop Fn and F keys may not appear in a browser test, which keys browsers intercept, and how to check the keyboard another way.
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Tests
How to identify your graphics processor in a browser
Use the browser-based System Info tool to find the graphics processor your browser reports, then verify the exact model in Windows or macOS.
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Tests
Why your CPU score changes between tests
Learn why your CPU score changes between runs, how heat and background apps affect it, and how to retest for a more reliable comparison.
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Tests
How to test a used laptop's processor performance
Check a used laptop's single-core and all-core processor performance in your browser, understand the score, and spot power or heat problems before you buy.