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Tips, guides, and tutorials for our free online tools.

Regex Cheat Sheet: Common Patterns for Everyday Use

Regex keeps slipping your mind? This guide breaks down the patterns you'll actually use — email, phone, URLs — with a free tester.

Spotting changes between two versions of a document is painful by hand. Here's a faster way using a free online diff tool.

Not sure which hash algorithm to pick? This breaks down MD5, SHA-1, and SHA-256 — what they're for and when to use each.

Naming conventions keep tripping you up? Here's a practical breakdown of each case style and a free tool to convert between them.

Got a wall of unindented JSON and can't read it? Here's how to clean it up fast — no install, no signup, just paste and format.