Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to check if a tablet charger keeps up
Compare charging with the screen idle and in use, so you can tell whether your tablet charger is keeping up or just slowing the drain.
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Tests
When to favor sustained speed over peak burst performance
Learn when steady USB or SD card speed matters more than a short peak, how to compare both fairly, and which drive fits your workload.
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Apps
Why speeding up speech makes consonants harder to hear
Learn why faster playback blurs consonants, how to compare speech at different speeds, and what to adjust in TooLab's browser Audio Editor.
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Tests
Video frozen but sound continues? What to check
Check whether frozen video comes from your camera, app, or connection, then try the fastest fixes without interrupting the sound.
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Apps
How to make a banner from several photos
Combine several photographs into a clear banner in the browser. Plan the layout, balance the images, add readable text, and export it at the right size.
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Tests
What to test before taking a laptop on a train
Check your laptop's battery, charger and offline readiness before a train trip, then learn what battery drain readings can and can't tell you.
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Tests
How to protect your eyes during a flashing pixel test
Learn how to reduce exposure to flashing patterns, when to skip the test, and what to do if the light causes discomfort on your screen.
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Tools
Why a spreadsheet adds quotes when exporting CSV
Learn why CSV exports quote some cells, when doubled quotes are normal, and how to tell CSV syntax from quote marks stored in the data.
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Tests
How to test smooth mouse wheel steps
Check whether your mouse wheel scrolls smoothly, skips steps, or jumps in a browser, then separate wheel faults from operating system settings.
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Tests
Why does my browser support WebP but not AVIF?
Learn why a browser check can show WebP support but not AVIF, how to confirm the result, and what to update or test next.
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Tests
Why does my laptop screen have a yellow patch?
Find out whether a yellow patch on your laptop screen comes from a setting, the display panel, or pressure damage, and learn what to check next.
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Tests
Why sustain messages continue after releasing a pedal
Find out whether the pedal sends a stuck sustain value, repeated MIDI data, or a normal release, then check its polarity, settings, and connection.