Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tools
How to prepare image files for a presentation projector
Choose compatible formats, match image proportions to your slide and projector, and avoid blurry or oversized pictures before presentation day.
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Tests
How to test a document camera before remote lessons
Check framing, focus, lighting, resolution, and permissions before class, then find out whether a problem is in the camera, browser, or lesson app.
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Tests
Compass heading drift: what it means for map directions
Learn why a phone compass heading drifts, how to test it in your browser, and what to change before trusting map directions.
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Tests
What a moving accelerometer graph can tell you
Learn what a moving accelerometer graph means, how to read changes as you tilt or move a device, and what it cannot prove about the sensor.
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Tests
Voice audio fluctuates in volume: what to check
Find out whether changing voice volume comes from the microphone, automatic gain, noise suppression, or a call app, then try the fixes in order.
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Tests
Why storage benchmarks vary between browser runs
Learn why browser storage scores change between runs, how to repeat a fair test, and when a low result may point to a real drive problem.
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Tests
What to check before trying flashing pixel patterns
Check whether a screen spot is really a stuck pixel, prepare your display, and decide if a flashing pixel pattern is safe to try.
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Apps
Why photo adjustments make skin tones look unnatural
See why edits turn skin orange, gray, or pink, then use a careful before-and-after workflow in TooLab's Photo Editor to correct the color.
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Tools
When to switch between lossless image formats
Learn when PNG, WebP, GIF, BMP, TIFF, or ICO is the right choice, and how to convert without losing detail or transparency.
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Tools
Create a QR code for a pet's contact information
Make a pet ID QR code with your contact details, choose what to share, and test it on a phone before attaching it to a collar or carrier.
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Tests
Bufferbloat test grade C or D: what can you fix?
A C or D bufferbloat grade can mean lag when your connection is busy. Learn how to retest, adjust router settings and tell where the delay starts.
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Tools
How to measure repeated assembly task times
Measure repeated assembly cycles fairly, find a useful typical duration, and spot delays without letting one unusually fast or slow run skew results.