Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
Why your portrait monitor has the wrong orientation
Find the right display, set portrait orientation in Windows or macOS, and fix a monitor that appears sideways, upside down, or on the wrong screen.
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Tests
What battery percentage per minute can tell you
Learn how to read a battery's percent-per-minute charging rate, compare chargers fairly, and spot when a low reading points to the device or setup.
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Tests
Can a browser test reveal a charger's real wattage?
Check what the browser's Charger & Cable Test can measure, how to compare chargers and cables, and why percent per minute is not wattage.
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Tests
Laptop plugged in but battery percentage not increasing
Find out why your laptop says it is charging but the battery stays put, compare chargers and cables, and check which fixes are safe to try.
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Tests
Why a USB-C connector doesn't guarantee high speed
Learn why USB-C ports and cables can still be slow, how to test a flash drive or card, and which part of the connection limits transfers.
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Tests
How to compare a card reader with a camera's USB
Compare the same memory card in a card reader and a camera, then learn what the speed results say about the card, USB link, and transfer method.
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Tests
Why external drives slow down through USB hubs
Learn why an external drive slows down through some USB hubs, how to compare its speed, and which cable, port, or power fix to try.
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Apps
How to change the color tone of a photo
Warm up a cool photo, soften a color cast, or create a mood with TooLab's browser Photo Editor, then check that skin and whites still look natural.
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Tools
How to avoid calling a colleague outside office hours
Check your colleague's local time before you call, account for daylight saving, and choose a safer time with TooLab's World Clock.
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Apps
How to add a simple watermark to a photo
Add a clear text watermark to a photo in TooLab Photo Editor. Choose its wording, placement, and size, then save a copy without changing the original.
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Tools
How to switch a world clock between 12 and 24 hours
Choose 12-hour time with AM and PM or 24-hour time in TooLab's World Clock, and find out what to check if the display does not change.
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Tests
How to test a used laptop for overheating
Run a short browser stress test, watch for performance drops, fan noise, or shutdowns, and learn when a used laptop may need cleaning or repair.