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.
Blog
Tips, guides, and tutorials for our free online tools.
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.
Text
Word Count: How Many Words Should a Blog Post Be?
Does word count actually matter for SEO? Short answer: it depends. Here's what the data says and a free tool to count words.
Developer
Unix Timestamp: What Those 10 Digits Mean
Seeing numbers like 1700000000 and wondering what date that is? Here's how Unix timestamps work and a free converter.