Developer Guides
Practical references and guides for developers. Regex, JSON, JWT, hashing, encoding — explained clearly with real examples.
Regex Cheat Sheet — The Complete Regular Expression Reference
A comprehensive regex cheat sheet covering character classes, quantifiers, anchors, groups, lookahead, and common patterns for email, URL, and phone validation.
Regex Tester & Debugger→JSON Formatting Best Practices for Developers
Learn JSON formatting best practices: indentation, validation, minification, common errors, and when to use each approach. A practical guide for developers.
JSON Formatter & Validator→JWT Tokens Explained — A Developer's Guide
Understand JSON Web Tokens (JWT): structure, claims, signing algorithms, when to use them, and critical security considerations. A practical guide for developers.
JWT Decoder→Hash Functions Explained — MD5, SHA-256, and When to Use Each
Understand hash functions: what they are, how they work, when to use MD5 vs SHA-256, and common use cases like checksums, password hashing, and data integrity.
Hash Generator→Base64 Encoding Explained — What It Is and When to Use It
Understand Base64 encoding: how it works, common use cases including data URIs, email, and APIs, URL-safe variants, and when to use or avoid it.
Base64 Encoder/Decoder→