Guides
Practical, jargon-free guides to getting the most out of your files — image formats, PDFs, passwords, and more.
Image
PNG vs JPG vs WebP: Which Image Format Should You Use?
A plain-English guide to PNG, JPG, and WebP — what each is best for, how they compare on quality and size, and how to convert between them.
How to Compress Images Without Losing Quality
Practical steps to shrink image file sizes for the web or email while keeping them looking sharp — resizing, quality settings, and format choice explained.
How to Resize Images for the Web and Social Media
The right pixel dimensions for websites and social platforms, how to resize without distortion, and why resizing speeds up your pages.
Generators
How to Create a Strong Password (Length Beats Complexity)
What actually makes a password strong in 2026 — why length matters more than symbols, how to use a password manager, and the mistakes to avoid.
QR Codes Explained: How They Work and Where to Use Them
What QR codes are, how they store data, the difference between static and dynamic codes, and practical tips for making codes that always scan.
Developer
Understanding JSON (and How to Fix Common Errors)
A beginner-friendly explanation of JSON syntax, what valid JSON looks like, and how to fix the most common parsing errors like trailing commas.
What Is Base64 Encoding (and When Should You Use It)?
A clear explanation of Base64 — what it does, why it’s used for data URIs and email attachments, and why it is encoding, not encryption.
Calculators
Simple vs Compound Interest: What’s the Difference?
Understand simple and compound interest with clear formulas and examples — and see why compounding frequency makes such a big difference over time.
How Much House Can I Afford? A Simple Guide
Work out a realistic home budget using the 28/36 rule, your down payment, and a mortgage calculator — plus the costs first-time buyers often forget.