Developer Tools

Developer tools cover the small, high-frequency tasks programmers hit every day: testing a regular expression against sample text and watching every match light up, assembling a pattern from common building blocks, decoding, encoding or inspecting JSON Web Tokens, and hashing text with MD5, SHA-1, SHA-256, SHA-512 or bcrypt. Instead of bouncing between a regex playground, a JWT debugger, a hash generator and a snippet of throwaway code, you get them side by side in one fast, distraction-free workspace.

Every tool here runs entirely in your browser. The text you test a regex against, the tokens you paste to inspect — which often carry user identifiers, scopes and claims — and the passwords or secrets you hash never leave your machine. SHA digests use the native Web Crypto API, MD5 uses a self-contained implementation, and bcrypt runs a real Blowfish-based key schedule with a configurable cost factor. There is no server round trip, so matches re-highlight, tokens re-decode and hashes recompute the instant you type.

These tools are built wide. Each one takes the full width of the page with no sidebar, giving regex matches, decoded token payloads and hash output the horizontal room they need to stay readable. Use them together across a debugging session: craft a pattern with the generator, validate it in the tester, decode the JWT it was meant to match, then hash the credential behind it. A quick note on choosing a hash: MD5 and SHA-1 are fast and fine for non-security checksums but broken for anything adversarial; SHA-256 and SHA-512 are the modern default for integrity; and bcrypt, being deliberately slow and salted, is the right choice for storing passwords.