Blog & Guides
Short, practical guides that walk through how to use our most popular tools. Each guide links to the tool itself, where you can see worked examples and answers to common questions.
How to count words, characters and reading time
Get accurate word, character, sentence and paragraph counts, plus an estimated reading time - handy for titles, bios, essays and meta descriptions.
Read guideHow to calculate percentages the right way
Work out a percentage of a number, percent change and "what percent is A of B" quickly and without second-guessing.
Read guideHow to Format, Validate and Minify JSON
A practical guide to working with JSON: why documents fail to validate, how pretty-printing and minifying actually work, and a step-by-step workflow for debugging API responses.
Read guideHow to encode and decode Base64
Convert text to Base64 and back, for auth tokens, headers, data URIs and other everyday developer tasks.
Read guideHow to calculate someone's exact age
Find an exact age in years, months and days, and work out the precise difference between two dates.
Read guideHow to convert between length units
Switch between metric and imperial units - millimetres, centimetres, metres, inches, feet and miles - in one step.
Read guideHow to Compress a PDF Without Losing Quality
Why PDFs get so big, what PDF compression actually does to text and images, and a safe step-by-step workflow for shrinking a document before you send it.
Read guidePrefer to just try it?
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