Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tools
Why a logo makes a tiny QR code unreadable
Learn why logos can hide QR code data, how size and contrast affect scanning, and how to test a QR code at the size people will use it.
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Tests
What browser settings block autoplay in tutorials
Find out why tutorial videos do not autoplay, which browser controls can block playback, and how to allow it or tell when a click is required.
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Tests
Why a browser download is slower than a speed test
Learn why a file downloads slower than your speed test, how to compare Mbps with MB/s, and what to check before blaming your browser.
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Tests
How to test a kiosk touchscreen before deployment
Check every area of a kiosk touchscreen, test multi-touch, and catch alignment or dead-zone problems before customers use it.
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Tests
Only recent files readable on a USB drive?
If older files on a USB drive or SD card fail while newer ones open, protect what remains, check for false capacity, and know what to do next.
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Tools
Why date columns sort incorrectly in a CSV file
Learn why CSV dates sort out of order, how to spot text and mixed formats, and how to standardize values before sorting rows safely.
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Tests
How to compare sensor responsiveness in web apps
Compare how quickly web apps react to the same movement, separate sensor delays from browser limits, and check settings that can affect readings.
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Tests
WebGL contexts fail to initialize: what to check
Find out why WebGL will not start in your browser, check graphics support, and try practical fixes before assuming your graphics hardware is broken.
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Tools
Why a document uses a different font on another PC
Find out why a document changes fonts on another computer, check which fonts are installed, and prevent substitutions when you share it.
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Tests
How to test a phone's movement detection before exercise
Check whether your phone's motion sensors respond before a workout, understand what the readings show, and fix common permission or setup issues.
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Tests
How to test whether dark shades are crushed
Check whether your monitor merges near-black shades, use a browser color test, and adjust display settings that hide shadow detail.
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Games
How to check whether your screen runs at 60 or 144 Hz
Check whether your display is set to 60 or 144 Hz, verify the result in a browser, and fix the settings or connection if the rate is too low.