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 a camera privacy shutter is closed
Check whether a webcam's physical privacy shutter blocks the lens, then tell a closed cover from camera permissions, a blocked app, or a faulty camera.
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Tests
Why charging speed drops near 100 percent
Learn why a phone or laptop slows near full, how to compare charging rates fairly, and when a low rate points to a charger, cable, or battery issue.
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Tests
How to test a VPN after changing browser settings
Check for IPv6 and WebRTC leaks after a browser change, then learn what a changed result means and which settings to check next.
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Tests
How to check Wi-Fi quality near a balcony door
Map Wi-Fi response time, jitter, and drops near a balcony door, then compare nearby positions to see whether the doorway affects your connection.
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Tests
Why printer output is darker than the screen preview
Find out why a printed page looks darker than its screen preview, use a printer test pattern to narrow it down, and adjust the settings that matter.
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Tests
Hardware hints for accessibility testing
Use device details and browser tests to spot accessibility testing risks, then check the actual keyboard, screen, touch input, and audio setup.
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Tests
Phone battery drains fast after overheating
Check whether a phone's fast battery drop after overheating is temporary or a battery problem, measure drain after it cools, and know when to get help.
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Tests
How to find a speaker's rattling frequency
Use a careful tone sweep to find the pitch that triggers speaker rattling, then isolate whether the cause is the speaker, its setup, or a loose object.
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Tests
What to expect from browser-based vibration tests
Learn what a browser vibration test can check, why a phone may not buzz, and how to tell a browser limit from a vibration motor fault.
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Tests
How to test memory cards after a bulk purchase
Test each memory card's real capacity, catch counterfeit or faulty cards, and know how to document results before a return deadline.
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Tests
How to compare microphone pickup with curtains closed
Compare microphone recordings with curtains open and closed, keeping the mic position and speech the same to hear whether the room sounds quieter.
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Tests
MIDI aftertouch not recognized? What to test
Check whether your MIDI keyboard sends aftertouch, then isolate browser access, keyboard settings, and instrument mapping with a quick test.