Guides
Short, clear answers to everyday questions about pictures, videos, passwords and more.
GuideJPG, PNG or WEBP? How to Choose the Right Picture FormatA plain-English guide to the three most common picture formats: what each is good at, and which one to use for photos, logos and websites.GuideHow to Make Strong Passwords You Can Actually ManageWhy length beats complexity, how attackers really guess passwords, and a simple system for keeping every account safe.GuideWhy Won’t My Video Play? Simple Fixes That WorkBlack screens, no sound, “format not supported” and uploads that fail: what causes them and how to fix each one.GuideQR Codes: How They Work and How to Print One That ScansWhat a QR code really stores, why some codes fail, and practical rules for size, colour and placement.GuideWhat Is JSON? A Plain-English IntroductionWhat JSON looks like, why almost every app uses it, and how to read and fix it, explained without jargon.GuideKitchen Conversions: Cups, Grams and Oven TemperaturesConvert cups, spoons, ounces and oven settings for recipes from any country, with handy tables for flour, sugar and butter.