Tools articles
160 guides in this category.
Counting Anniversaries and Time Together in Years, Months and Days
How to work out how long you've been together, married or friends, and how to plan the next anniversary with an accurate countdown.
Read article →DD/MM/YYYY or MM/DD/YYYY? Date Formats and the Mistakes They Cause
How date formats differ around the world, why ambiguous dates lead to wrong ages and rejected forms, and simple ways to write dates unambiguously.
Read article →How the Gregorian Calendar Was Created and Why It Skipped Days
The history behind today's calendar, how the Julian calendar drifted, the ten days that vanished in 1582, and why some countries switched centuries later.
Read article →Online Age Verification: Why Websites Ask and What They Check
Why websites and apps ask for your date of birth, how age gates differ from real verification, and how to protect your privacy while proving your age.
Read article →How to Never Forget a Birthday: Simple Systems That Work
Practical methods for remembering birthdays of family, friends and colleagues, and how to add ages and countdowns to make your greetings more thoughtful.
Read article →Charging Your Phone During a Power Cut: Power Banks, Cars and More
Practical ways to keep a phone charged when the mains is off, and how to stretch the battery you have.
Read article →Dark Mode and Night Settings: Comfortable Screens After Dark
How dark mode, brightness controls and night-light settings can make your phone easier on the eyes at night, and what they can and can't do.
Read article →Looking After Your Phone Battery: Habits That Make It Last
Simple, evidence-based habits to keep a phone battery healthy for longer, without myths.
Read article →Power Bank Safety: Choosing and Storing One for Emergencies
What to look for when buying a power bank, how to use and store it safely, and how it supports your phone torch.
Read article →Recycling Old Torches and Batteries Safely
How to dispose of used batteries, old torches and power banks responsibly, and how to store batteries safely at home.
Read article →Colour Spaces in Plain English: Why sRGB Is the Safe Choice
What a colour space is, why colours can look different on different screens and why sRGB is the safest option for sharing.
Read article →Converting Centimetres and Inches to Pixels for Forms and Prints
How to work out pixel dimensions from physical sizes, with worked examples for photo prints and forms that specify centimetres.
Read article →Image File Names and Organisation for People Who Take Hundreds of Photos
Simple naming and sorting habits so you can find a photo in seconds, whether you have a hundred or a hundred thousand.
Read article →Scanning Documents with Your Phone: Resolution, Lighting and File Size
How to get clear, readable document scans from a phone camera without producing enormous files.
Read article →Zip Files and Image Compression: Why Zipping a JPEG Barely Helps
What zipping does, why it saves little for photos already compressed and when it's still useful.
Read article →Check the Link Before You Open It: A Quick Routine
A ten-second routine for reading the address in a scanned QR code and spotting the signs of a suspicious link.
Read article →QR Codes in the Classroom: Ideas for Teachers
Simple ways teachers use QR codes: quizzes, treasure hunts, reading extras and quick links to resources.
Read article →QR Scanners and Camera Permissions: What to Allow
Why a scanner app needs camera access, which other permissions it does not need, and how to review them.
Read article →Shortened Links in QR Codes and What They Hide
Why people shorten links for QR codes, how it changes the scanning experience, and how to stay careful with them.
Read article →What a QR Scan Reveals About You
Scanning a code is not anonymous once you open its link. Learn what a website can learn from a visit and how to limit it.
Read article →Age Categories in Sports: Why Cutoff Dates Decide Where You Compete
How youth and masters sport use birth year or cutoff-date age groups, and how to check the correct category for a player or athlete.
Read article →Birthday Traditions Around the World: Noodles, Piñatas, Flour and More
A tour of how different countries celebrate birthdays, from long-life noodles to playful customs, and why the ideas travel so easily.
Read article →Insurance and Age: 'Age Last Birthday' vs 'Age Nearest Birthday'
How insurers define age for premiums, why the definition can change your cost, and how to check which convention your policy uses.
Read article →School Year Groups and Birth Dates: Who Is the Youngest in the Class?
How school year groups are formed from birth dates, why the youngest and oldest pupils can be almost a year apart, and how to work out a child's position.
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