Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to test sensor availability on an older phone
Check which motion, compass, light, location, and vibration sensors your older phone exposes to the browser, and learn what missing readings mean.
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Tests
How to check battery drain during photo editing
Measure how quickly your battery drains while editing photos, compare it with an idle baseline, and find settings that increase power use.
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Tools
Why your screen recording shows a black window
Find out why a screen recording shows a black window, then fix the capture source, permissions, or app settings with a browser-based test.
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Tests
How to compare USB drive speed on front and rear ports
Compare the same USB drive on front and rear PC ports, understand the read and write results, and find out whether a port or the drive is slower.
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Tests
How to check dual-monitor layout after a GPU update
Check which monitors appear after a GPU update, compare resolution and scale, and restore the right screen order and main display in Windows or macOS.
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Tools
Why photos contain more than one metadata standard
Learn why a photo can store EXIF, IPTC, and XMP together, how to spot repeated or conflicting fields, and what to remove before sharing.
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Tools
How to clean duplicate email entries in a CSV
Find repeated email addresses in a CSV export, decide which rows to keep, and clean the file without losing useful contact details.
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Tests
How to check battery drain with a second monitor
Measure laptop battery drain with a second monitor connected, compare it with one-screen use, and learn what the rate can and cannot tell you.
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Tests
Why a cracked speaker surround buzzes during bass
A cracked speaker surround can vibrate against the cone during bass. Learn how to isolate the buzz and decide whether to repair or replace it.
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Tests
How to evaluate battery use during screen recording
Measure how screen recording changes laptop battery drain with matched idle and recording tests, and learn what browser battery readings can show.
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Tests
Why bufferbloat gets worse during uploads
Learn why your ping jumps when an upload fills the connection, how to test bufferbloat, and which fixes can reduce delay during calls and games.
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Apps
How to make a reusable graphic with editable layers
Build a graphic you can update later by keeping text, shapes, and images on separate layers, then save an editable master and export a copy.