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Short, practical guides for checking your hardware and fixing what the tests find.

Tests How to compare battery drain before and after updates Compare battery drain before and after an update with the same settings and workload, so you can tell a real battery change from normal variation. Michael ReedOctober 23, 20265 min read
Tools How to time a presentation without a phone Use your computer's stopwatch to time a presentation, set checkpoints, and check whether you are on pace without relying on your phone. Lauren HughesOctober 23, 20264 min read
Tools How to compare lap times during interval training Use a browser stopwatch to capture each interval, compare split times fairly, and spot when your pace starts to fade without guesswork. Sarah CollinsOctober 23, 20264 min read
Apps How to fix a photo that looks too dark Brighten a dark photo in TooLab's browser Photo Editor, lift shadow detail without washing out bright areas, and save a natural-looking copy. Jessica HallOctober 23, 20264 min read
Apps How to trim the beginning and end of an audio file Trim silence or unwanted sound from both ends of an audio file, preview the edit, and export a clean WAV or MP3 in your browser. Nicole WardOctober 23, 20264 min read
Apps How to fade music in and out smoothly Fade music in and out in your browser, choose a natural fade length, and export a finished track without installing audio software. Chris WalkerOctober 23, 20264 min read
Tests Touchscreen taps by itself: causes and checks Find out whether phantom touches come from a dirty screen, charger, settings, or failing hardware, then test the screen and try practical fixes. Daniel HayesOctober 23, 20265 min read
Tests How to test a tablet screen before buying used Check for dead zones, missed touches, multitouch problems, dead pixels, and screen damage before paying for a used tablet with quick browser tests. Jason TurnerOctober 23, 20265 min read
Tests Why two-finger gestures stop working on a tablet Test whether your tablet detects two touches at once, then check app support, accessibility settings, screen protectors, and signs of a touch-screen fault. Daniel HayesOctober 23, 20264 min read
Tests Touchscreen works with finger but not stylus Check whether the screen, stylus, or app is at fault, then try compatibility, pairing, and settings fixes that can restore pen input. Michael ReedOctober 23, 20265 min read
Tools How to convert dozens of images at once Convert up to 50 JPG, PNG, WebP, GIF, BMP, ICO, or TIFF images in one batch, choose an output format, and keep the originals on your device. Lauren HughesOctober 23, 20264 min read
Tools How to convert BMP files to PNG Convert one BMP image or a batch of up to 50 into PNG in your browser, then check image quality, transparency, and file size before sharing. Megan FosterOctober 23, 20264 min read