Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to inspect an MPE controller's MIDI messages
Check whether an MPE controller sends separate note, pressure, and pitch data, and learn what a browser MIDI test can and cannot confirm.
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Tools
How to compare a machine-generated report with a correction
Compare a machine-generated report with its corrected version, spot changed wording and numbers, and check that important details were not lost.
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Tools
Create a QR code for an art exhibition catalog
Create a QR code that opens your exhibition catalog, choose a clear design for print, and test it at the size visitors will scan.
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Tests
How to check an SD card before using it in a dashcam
Check a dashcam SD card's real capacity before loading it. Learn how to run a read-back test, spot failures, and what the result cannot prove.
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Tests
How to check Wi-Fi coverage before buying a mesh kit
Map Wi-Fi quality room by room before buying mesh. Learn how to spot coverage gaps, separate them from slow internet, and choose where to retest.
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Tools
Why a color's HEX value changes after a screenshot
Learn why the same color can get a different HEX value in a screenshot, how to sample it correctly, and which display settings can change the result.
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Tests
Why fast internet still has high ping
Learn why a fast connection can still feel laggy, how to separate Wi-Fi delay from loaded-network congestion, and what to test next.
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Tests
Private DNS vs VPN: what each one protects
Learn what private DNS protects, what a VPN hides, and how to use a browser test to check whether your real IP address is exposed while connected.
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Tests
How to check a camera in two browsers
Compare the same webcam in two browsers under matching conditions, then tell a camera problem from permission, exposure, or browser differences.
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Tests
How to find dead spots on a touchscreen
Scan every part of a touchscreen in your browser, distinguish a dead zone from a software issue, and decide what to try before repair.
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Tests
Why browser connections fail after router firmware updates
Check whether a router update changed Wi-Fi, DNS, or security settings, then test connection drops and restore access safely.
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Tests
What to test before using a USB stick for system recovery
Check a USB stick's real capacity and read-back before trusting it for system recovery, then confirm the recovery media can start on your device.