Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to test a used laptop's processor performance
Check a used laptop's single-core and all-core processor performance in your browser, understand the score, and spot power or heat problems before you buy.
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Tests
Why browser graphics run slowly on a new laptop
A new laptop can still render browser graphics slowly because of power limits, settings, or a driver issue. Test the GPU and find the cause.
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Tests
How to check if your browser uses GPU acceleration
Check whether Chrome, Edge, or Firefox is using your GPU, compare it with a browser graphics test, and fix software rendering if needed.
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Tests
How to see what browser information sites can access
See what a website can learn from your browser, check permissions and exposed details, and limit access to your camera, microphone, and location.
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Tests
Wi-Fi shows full bars but the internet keeps pausing
Full Wi-Fi bars do not guarantee a steady connection. Measure response time, jitter, and drops, then narrow down whether Wi-Fi or internet is at fault.
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Tests
How to build a room-by-room Wi-Fi quality map
Map Wi-Fi quality in every room by measuring response time, jitter, and drops consistently, then use the results to find and fix weak spots.
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Tests
How to verify Wi-Fi improvements after moving a router
Compare Wi-Fi room by room before and after moving your router, using repeatable measurements to see whether coverage and connection quality really improved.
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Tests
Internet slower than your plan? How to test it
Measure download, upload, ping, and jitter, then compare wired and Wi-Fi results to see whether your router, device, or ISP is slowing you down.
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Games
How to test N-key rollover on a gaming keyboard
Check how many keys your gaming keyboard can register at once, spot missed or extra presses, and tell rollover limits from a game issue.
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Tests
MIDI keyboard sends duplicate notes: causes and fixes
Find out whether your MIDI keyboard sends each note twice or your music app is duplicating it, then check the most common causes.
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Tests
Why browser MIDI testing does not work in Safari
Safari does not support the browser MIDI access this test needs. Learn how to check your controller in Chrome or Edge and fix common connection issues.
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Tests
How to check your computer specs without installing apps
See your processor, graphics, screen, battery, and other device details in your browser, then learn which specifications you need to check in system settings.