Guides
Practical, plain-English explainers to go along with our tools.
How to Count Words in a Document
Learn different ways to count words in your writing, and why word count matters for essays, articles and SEO content.
What Is JSON? A Plain-English Guide
A beginner-friendly explanation of JSON, its syntax, and why it’s the standard format for exchanging data on the web.
How to Compress an Image Without Losing Quality
Practical tips for reducing image file size for faster websites and smaller uploads, while keeping visual quality acceptable.
JPG vs PNG: Which Should You Use?
A clear comparison of JPG and PNG image formats, covering compression, transparency and best use cases for each.
How to Calculate Percentage Change
The formula for percentage increase and decrease, explained with worked examples.
How Does Base64 Encoding Work?
An explanation of Base64 encoding, why it exists, and common situations where you’ll encounter it.
What Is a Unix Timestamp?
Understand what Unix timestamps are, why they’re used, and how to convert them to readable dates.
How to Reduce Image File Size for the Web
A practical checklist for shrinking image files without hurting how they look on your website.
How to Create a QR Code
Step-by-step guidance on creating a QR code for a URL, email address or phone number, and tips for making sure it scans reliably.