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
Why many CPU cores do not guarantee fast page loads
More CPU cores can help with parallel work, but page loads also depend on single-thread speed, scripts, network delays, and browser settings.
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Tests
Why does my webcam get blurry when I sit too close?
Learn why your webcam loses focus up close, how to check its focus range, and what to change in your position, lighting, or camera settings.
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Tests
What to test after switching a router to bridge mode
Check internet access, Wi-Fi, speed, and latency under load after bridge mode. Learn which router settings to verify and how to spot double NAT.
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Tests
When ear fatigue makes audio tests misleading
Learn why tired ears can distort speaker test results, how to retest at a safe, steady volume, and when to stop or check the hardware.
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Tests
Compare full-device and browser-only VPN coverage
Compare a full-device VPN with a browser-only VPN extension, then check which browser traffic is protected and what an IP leak test cannot prove.
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Tests
How to check MIDI data during a live keyboard setup
Check whether a live keyboard sends notes, velocity, pedal and control data, then isolate browser, cable or instrument setup problems.
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Tests
How to compare system details on two computers
Compare processor, graphics, screen, battery, and network details on two computers, and learn which differences matter and what a browser cannot show.
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Tests
How to check a pixel defect at different brightness levels
Check whether a screen mark is a dead or stuck pixel by comparing it at several brightness levels, then learn what to try and when to seek repair.
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Tests
How to compare two drives without trusting labels
Compare two drives with repeatable read and write tests, identify which drive is being tested, and spot results distorted by the setup.
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Tests
How to test an SD card for photography
Check whether an SD card or flash drive is fast enough for photo imports, RAW bursts and video, and learn what a browser speed test can really tell you.
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Tests
How to inspect a tiny green speck near a screen edge
A tiny green speck near the screen edge may be a stuck subpixel, dust, or an overlay. Check it safely and learn when flashing is worth trying.
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Tests
How to check your PC before a video call
Check your camera, microphone, speakers, browser permissions and connection before an important video call, then work through common fixes.