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
USB-C charger keeps renegotiating power? What to test
See how to test a USB-C charger and cable when charging speed changes, what a browser test can show, and how to tell normal power changes from a fault.
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Tests
Photo printer leaves tiny colored dots? What to test
Use a browser test page to separate printer defects from photo or paper problems, then check ink, print settings, and the path through the printer.
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Tests
Second monitor not detected? How to troubleshoot
Find out whether your computer, cable, adapter, or browser is missing the display, then try the quickest checks for Windows 11 and macOS.
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Tests
VPN kill switch not protecting browser traffic?
Learn how to check whether a VPN kill switch blocks browser traffic, spot IPv6 or WebRTC leaks, and fix settings before using sensitive sites.
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Tests
Why charging behaves differently below 10 percent
Learn why charging may slow or fluctuate below 10%, how to compare a charger and cable, and when heat, settings, or a worn battery may be involved.
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Tests
How to test Wi-Fi consistency at a standing desk
Compare Wi-Fi response time, jitter, and drops at sitting and standing desk heights, then find out whether the desk setup or network is causing changes.
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Tests
How to test computer speakers for channel crosstalk
Use a browser-based stereo test to check whether sound leaks into the wrong computer speaker, then separate real crosstalk from room sound and settings.
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Tests
CPU benchmark on a shared computer: what to know
Learn why CPU benchmark scores vary on a shared computer, how to run a fairer Processor Test, and when a low result may need follow-up.
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Tests
How to capture dropouts during a long video meeting
Record when a video meeting freezes, then check whether connection drops, jitter or high response times line up with the problem.
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Tests
How to check whether your router supports fair queueing
Learn how to use loaded-latency results and your router's settings to spot fair queueing, then confirm whether it reduces lag under download and upload.
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Tests
How to test a USB drive without risking files
Learn how to check a USB drive's real capacity safely, why the test can overwrite files, and what to do before using Fake USB & SD Check.
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Tests
How to compare VPN leak results across browsers
Compare VPN leak results in two browsers, separate real IPv6 or WebRTC exposure from different VPN routes, and find the setting behind the difference.