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
Battery drains faster on Wi-Fi? How to check
Compare battery drain with Wi-Fi on and off, track the rate with Battery Meter, and learn what a browser test can and cannot tell you.
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Tests
How to verify VPN behavior with two browser profiles
Compare two browser profiles to see whether a VPN extension changes the IP websites can see, then check for IPv6 or WebRTC leaks.
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Tests
Why a device may reject an incompatible fast charger
Learn why a phone or laptop may slow or refuse fast charging, how charger negotiation works, and how to compare chargers and cables safely.
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Tests
A browser touch test is not a stylus pressure test
A browser touch test can show contact points and dead zones, but it cannot confirm stylus pressure sensitivity. Learn what to test instead.
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Tests
How to compare desk placement near an air conditioner
Compare air conditioner noise at two desk positions with a browser noise meter, using repeatable readings to choose a quieter place to work.
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Tests
How to record before-and-after Wi-Fi coverage changes
Use Wi-Fi Map to compare the same rooms before and after a router change, then record response time, jitter, and connection drops clearly.
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Tests
Why screen defects show only at certain brightness
Learn why a screen defect can appear at one brightness but vanish at another, how to test it consistently, and when to seek repair.
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Tests
How to check screens with an HDMI splitter
Use the Screens tool to check what your computer detects, compare the picture on each HDMI splitter output, and find resolution or cable problems.
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Tests
Why fine text looks different on matte and glossy paper
Learn why small letters change on matte and glossy paper, then compare both fairly with a repeatable printer test and the right media settings.
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Tests
How to compare an empty shelf with a loaded bookshelf
Compare a shelf with no books to a loaded bookshelf using the same bass sweep, then find whether books, loose items, or the shelf itself are rattling.
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Tests
How to check if mono audio is on
Check whether mono audio is enabled by comparing left and right speaker output, then find the setting on Windows, Mac, iPhone, or Android.
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Tests
Motion-controlled games tilt in the wrong direction
Find out whether the sensor, device orientation, or a game setting is causing inverted motion controls, then test the right fix.