Security
How to Generate Passwords That Are Actually Strong
Most password advice is vague. This covers what makes a password crackable, what doesn't, and how to generate ones that hold up.
Blog
Tips, guides, and tutorials for our free online tools.
Everyday
QR Codes: How They Work and How to Make Your Own
QR codes are everywhere but how do they actually work? Here's a plain-English breakdown plus a free tool to generate them.
Developer
Base64 Encoding: What It Does and Why It's Everywhere
Base64 shows up in data URIs, email attachments, and auth tokens. Here's what it actually does and when you'd use it.
Developer
URL Encoding: Why %20 Means Space and Other Mysteries
Ever wondered why some URLs have %20 and %3F in them? Here's what URL encoding does and a free tool to do it for you.
Designer
HEX vs RGB vs HSL: Color Formats Compared
Color codes confusing you? Here's what HEX, RGB, HSL, and CMYK actually mean — and a free tool to convert between them.