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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. Nicole WardOctober 25, 20265 min read Read the article

• 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. Rachel BennettOctober 25, 20265 min read
• 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. Lauren HughesOctober 25, 20264 min read
• 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. Jason TurnerOctober 25, 20265 min read
• 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. Lauren HughesOctober 25, 20264 min read
• Tests How to compare headphone response after changing ear pads Compare headphone response before and after changing ear pads, with a repeatable browser test and checks to separate pad effects from fit or settings. Michael ReedOctober 25, 20265 min read
• Games How to compare slow and fast stick input Compare a controller stick's response at slow and fast speeds, spot inconsistent movement, and separate controller problems from game settings. Kyle JenkinsOctober 25, 20265 min read
• Tests How to compare connection stability across devices Run the same stability test on each device, compare drops and jitter fairly, and find out whether the problem is your Wi-Fi or one device. Michael ReedOctober 25, 20265 min read
• Tests Webcam looks stretched: aspect ratio or camera setting? Find out whether a stretched webcam image comes from its aspect ratio, a camera setting, or the app. Compare the live preview and resolution, then fix it. Jason TurnerOctober 25, 20264 min read
• Tools Mixed date formats in a CSV: what to check Learn how to spot ambiguous dates, confirm whether values use month-first or day-first order, and standardize a mixed-region CSV without changing dates by guesswork. Megan FosterOctober 25, 20264 min read
• Tests How to check a classroom computer lab efficiently Use one repeatable pass to check keyboards, screens, cameras, audio, and network across a classroom lab, then sort faults by what needs attention first. Michael ReedOctober 25, 20266 min read
• Tests Mouse switch or software macro? How to tell Find out whether unexpected or repeated mouse clicks come from a worn switch or a software macro, then test the mouse and isolate the cause. Daniel HayesOctober 25, 20265 min read
• Tests Camera preview not working after a browser update? Check whether your camera preview still works after a browser update, then isolate permission, camera selection, and compatibility problems. Jason TurnerOctober 25, 20265 min read