Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to test a monitor for stuck subpixels
Use solid color screens to spot a stuck red, green, or blue subpixel, separate a panel defect from an image artifact, and decide what to do next.
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Tests
How to see if closing a window reduces room noise
Compare room noise with a window open and closed using the same microphone position, then check whether the difference is large and repeatable.
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Tests
Why a phone charges differently in airplane mode
See why airplane mode can change a phone's charging rate, how to compare it fairly, and what the result says about your charger, cable, and battery.
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Games
Why target size changes your aim score
Learn why smaller targets can lower an aim score, what the number measures, and how to compare results without changing several settings at once.
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Tools
How to schedule an online lesson overseas
Compare your local time with a student's, account for daylight saving changes, and send an invite that makes the lesson time clear in both time zones.
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Tests
Why camera images have diagonal flicker bands
Learn why diagonal bands appear in camera images, how to tell flicker from moiré, and which lighting or camera settings can reduce them.
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Tools
Why fonts look wider in one application than another
Find out why the same font looks wider in different apps, compare installed fonts, and check for font substitution, sizing, and spacing differences.
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Tests
Loaded delay stays high with QoS on? What to check
Find why latency still rises during downloads or uploads with QoS enabled, then check router rates, device priority, and other traffic.
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Tests
How to test rural fixed wireless over time
Track rural fixed wireless reliability with repeated tests. Compare delay and dropouts by time and weather, then separate Wi-Fi problems from provider issues.
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Tests
Why network speed drops during an encrypted transfer
Learn why encrypted downloads or uploads slow down, how to separate VPN, server, Wi-Fi, and device limits, and what to test next.
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Tools
How to batch convert product photos for a marketplace
Convert up to 50 product photos at once, pick a marketplace-friendly format, and check image quality before uploading your listing.
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Tests
Compare a card's sequential and small-write speed
Compare a memory card's large-file speed with its small-write behavior, run a repeatable browser test, and learn what slow results mean.