Blog
Practical tutorials and in-depth guides for developers — how the tools work under the hood, real-world use cases, and common pitfalls. Everything runs locally in your browser.
- Generators·9 min read
UUID Generator Guide: Versions, v4 & How to Generate
Understand how a UUID generator works, UUID v1/v4/v5 differences, collision probability, and when to pick UUIDs over auto-increment IDs, with code examples.
- Testers·8 min read
Regex Tester Guide: Match, Capture Groups & Replace
Learn what a regex tester does: live matching, group capture, replacement, flag meanings, plus greedy vs. lazy quantifiers, backtracking pitfalls, and a quick pattern cheat sheet.
- Encoders / Decoders·9 min read
Base64 Guide: Encoding, Decoding & Common Pitfalls
Understand how Base64 maps binary to printable ASCII, why it is needed, how it differs from Base58/Base62, URL-safe variants, and common misuse cases, with examples.
- Formatters·10 min read
JSON Formatter Guide: Pretty-Print, Minify & Validate
Learn how a JSON formatter pretty-prints and minifies JSON, indentation rules, JSON5/JSONC, common validation errors, and key sorting — with JS and Python examples.