Utility Hub
Developer Tools
A curated suite of fast, lightweight developer tools. Designed to run completely client-side to ensure total data privacy.
JSON Formatter & Validator
Format, beautify, and validate JSON data instantly. Cleans up raw JSON payloads for easy reading.
Launch ToolJWT Decoder & Parser
Decode and inspect JSON Web Token headers, payloads, and signatures. All decoding is done 100% locally.
Launch ToolLLM Token Counter
Estimate prompt tokens, count words/characters, and compare execution costs across OpenAI, Anthropic, and other models.
Launch Tool