Crypto & Security

Security work benefits from quick, trustworthy tools — a place to test a regular expression before it ships, to hash a value, or to reason about tokens. These tools lean on the browser’s built-in Web Crypto where possible and run entirely on your device, so a pattern, secret, or sample payload never leaves your machine. Just as important, each page is candid about limits: which hash algorithms are broken for security, why decoding a token is not the same as verifying it, and how a greedy regex can lock up an engine. The goal is tools that help you get security right rather than ones that quietly encourage a mistake.