CodeKitBox collection

Free Developer Tools

Fast utilities for developers and technical learners. Most tools run locally in your browser and are useful for quick debugging, data cleanup, and API work.

Base64 Encoder DecoderOpen tool URL Encoder DecoderOpen tool JWT DecoderOpen tool Unix Timestamp ConverterOpen tool JSON FormatterOpen tool UUID GeneratorOpen tool SHA Hash GeneratorOpen tool Regex TesterOpen tool Text Diff CheckerOpen tool CSV JSON ConverterOpen tool HTML Entity Encoder DecoderOpen tool URL ParserOpen tool

Why this collection exists

Browser-based developer utilities for encoding, JSON, JWT, hashes, regex, timestamps, URLs, and debugging everyday technical data.

Privacy note

CodeKitBox tools are designed to run locally in the browser whenever possible. Avoid pasting private keys, passwords, or sensitive production data into any online tool.