Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to test an ISP modem without a router
Test bufferbloat with your computer plugged straight into an ISP modem, learn what the grade means, and tell whether your router is involved.
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Tests
Bluetooth keyboard delay: how to test and fix
Test whether delayed Bluetooth keystrokes come from the keyboard, connection, or computer, then try practical fixes on Windows and Mac.
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Tests
Phone only charges at one cable angle? How to test
Find out whether a cable, charger, or phone port is behind angle-sensitive charging, and learn safe checks to try before booking a repair.
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Tests
How to check your browser's supported video formats
See which video codecs your browser reports as supported, learn why a file may still fail to play, and what to check next.
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Tests
How to compare laptop speed with a room fan on
Compare laptop performance with a room fan on and off, using repeatable browser tests to see whether airflow changes sustained CPU speed.
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Tools
Photo has the wrong rotation tag? What to do
Learn why a photo rotates incorrectly, how to check its EXIF orientation tag, and how to correct it without leaving the image sideways elsewhere.
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Tools
Why preserving a JPEG's bytes protects image quality
Learn why re-saving a JPEG can reduce image quality, how metadata cleanup can leave its compressed image data untouched, and what to check first.
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Tests
How to compare rattles with a subwoofer on and off
Compare the same bass sweep with your subwoofer on and off to tell whether a rattle comes from the sub, a speaker, or something nearby.
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Tests
How to test taps along a tablet's center seam
Check whether taps fail along a tablet's center seam, separate a screen fault from a protector or software issue, and learn what to test next.
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Tests
Hotspot disconnects when phone screen locks
Find out whether your phone is turning off its hotspot or the connected device is sleeping, then adjust the right power and hotspot settings.
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Games
How to detect analog trigger noise while resting
Check whether a controller's analog trigger signal moves while untouched, tell small fluctuations from a fault, and try practical fixes before replacing it.
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Tests
DAW receives control changes as notes? How to check
Find out whether your controller sends MIDI control changes or note messages, then check the DAW settings that can make them appear in the wrong place.