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Tutorials10 Smart Ways to Use QR Codes in Your Business
QR codes aren't just for menus. From contactless payments to review requests and Wi-Fi sharing, here are practical ways small businesses use them — plus how to make one free in seconds.
TutorialsWhat Is URL Encoding? Why URLs Have %20 (and How to Decode It)
Ever seen %20 or %E4%B8%AD in a URL? This plain-English guide explains what URL encoding is, why URLs need it, why non-Latin URLs sometimes turn into garbage, the difference between encodeURI and encodeURIComponent, and how to encode/decode online.
TutorialsWhat Is a Unix Timestamp? Understanding 1700000000 (With a Converter)
Seen a number like 1700000000 in a database, API or log and wondered what it means? This plain-English guide explains the Unix timestamp, why programs use it, seconds vs milliseconds, time zones, and how to convert to and from dates online.
TutorialsWhat Is Hashing? SHA-256 Explained (and How to Generate It)
Seen a SHA-256 checksum on a download, or heard passwords are 'hashed'? This plain-English guide explains what hashing is, why it can't be reversed, how it differs from encryption, and how to generate SHA hashes online to verify files.
TutorialsCloud Backup Done Right: The 3-2-1 Rule and Free Options
Losing your photos and documents to a dead phone or laptop is avoidable. Here's the 3-2-1 backup rule explained simply, the difference between sync and backup, and how to start for free.
TutorialsHow to Create a Strong Password in 2026 (Length Beats Complexity)
Still using Password1!? The latest security guidance flips the old rules — length matters more than symbols. Here's how to make a password that's genuinely hard to crack yet easy to remember, why you should stop forcing periodic changes, and the tools to use.
TutorialsWhat Is Base64? Uses, How It Works, and Encode/Decode Online
Keep seeing long Base64 strings in code or on the web? This plain-English guide explains what Base64 is, what it's used for, why it is NOT encryption, why it makes data bigger, and how to encode and decode it safely online.
TutorialsHow to Pick a Winner Fairly: Random Number and Name Pickers
Running a giveaway or splitting into teams? 'I'll just pick someone' invites accusations of bias. Here's how to make a genuinely fair random draw and a free tool that does it transparently.
TutorialsHow to Write Meeting Minutes That Actually Get Things Done (Free Template)
Minutes nobody reads and tasks nobody does? From real meetings, here's what minutes should capture, how to separate decisions from action items, whether to write verbatim, and a free template you can drop in.
TutorialsHow to Write a Resume That Gets Interviews (From Someone Who Screens Them)
Resume getting ignored? From the perspective of the person reading them, here's what a resume that lands interviews actually needs — how to write experience that sells, what to do with no experience, and the mistakes that get you rejected. Free template included.
TutorialsHow to Use a Countdown Timer to Get More Done
A countdown timer is the simplest productivity tool there is — Pomodoro focus, workout intervals, cooking, exam practice. Here's how to use one well and a free online timer that needs no install.
TutorialsChange Text Case Instantly: UPPERCASE, lowercase, Title Case and More
Pasted text in ALL CAPS? Need a headline in Title Case or a slug in kebab-case? Re-typing is a waste of time. Here's when each case style matters and a free tool that converts in one click.
TutorialsUnit Conversion Made Simple: Length, Weight, Temperature and More
Recipes in grams, ovens in Fahrenheit, parcels in pounds, screens in inches — everyday life mixes measurement systems constantly. Here's how the common conversions work and a free tool that handles them instantly.
TutorialsHow to Calculate Discounts and Percentages (Without Getting Fooled)
Sale season tricks shoppers all the time — '70% off then an extra 20%' is not 90% off. Here's how to work out discounts, the real final price, and how much you actually saved, with a free calculator.
TutorialsWhat Is JSON? A Plain-English Guide (With Common Errors)
Keep seeing JSON and not quite sure what it is? This plain-English guide explains what JSON looks like, where it's used, the mistakes that trip everyone up (trailing commas, wrong quotes), and how to format and validate it online.
TutorialsHow to Calculate a Mortgage Payment (With a Free Calculator)
Want to know your monthly mortgage payment and total interest before you commit? Here's how amortization works in plain English, how the rate and term change what you pay, and a free loan calculator to run the numbers.
TutorialsHow to Calculate Your Exact Age (Years, Months, Days)
Need your exact age in years, months and days — for a form, an application or just curiosity? Here's how age is calculated, the quick mental formula, and a free age calculator that also shows total days lived and days to your next birthday.
TutorialsSmall Shop Bookkeeping: How to Start (Free Template Inside)
Opening a shop and not sure how to keep the books, or never quite know if you're making money? From a small-business angle: how to track income and expenses, the difference between cash flow and profit, how to work out margin, and a free income & expense log.
TutorialsHow to Create a QR Code (Free, Step by Step) — 2026
Want to make a QR code for a link, Wi-Fi, contact or menu? This step-by-step guide shows how to create a free QR code that never expires, customise it, and make sure it always scans.
TutorialsBMI Explained: How to Calculate It and What Counts as Healthy
What's a healthy BMI, and how do you work yours out? This plain guide explains the BMI formula, the weight categories, why thresholds differ by region, and BMI's limits — with a free BMI calculator.
TutorialsHow to Write Amounts in Chinese Characters (Cheques & Receipts)
Need to write a money amount in formal Chinese characters for a cheque or receipt in Taiwan, Hong Kong or China? Here's the digit-by-digit mapping, the rules for zeros and decimals, and a free one-click converter so you don't get a cheque rejected.
TutorialsHow to Write a Quote: A Freelancer's Guide (Free Template)
First time sending a quote and not sure what to put? From a freelancer's view: the fields every quote needs, how to handle tax (pre-tax vs inclusive), quote vs estimate, and how to avoid doing work for free. Free quotation template included.
TutorialsHow Many Words Should You Write? Length Guides by Use Case
How long should a blog post, social caption, bio or ad really be? Here are practical word-count targets for each situation — from SEO articles to Instagram captions to résumé summaries — plus a free word counter to track length as you write.
TutorialsWhat Are HEX and RGB Color Codes? Read and Convert Them
Keep seeing #FF5733 or rgb(255,87,51) and not sure what they mean? Here's a plain-English explanation of HEX, RGB and HSL — what they are, how to read them, how they differ, and how to convert between them online.