Developer Utilities

Essential developer utilities

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Everyday developer utilities

A grab bag of small utilities that solve specific problems quickly: regex tester with live highlighting and capture-group readout; Unix timestamp ↔ human date converter that handles edge cases like leap seconds and pre-1970 dates; cron-expression generator with plain-English descriptions; HTTP status-code reference with which status to use when the spec is ambiguous; lorem ipsum in five flavors. None of these are big enough to be products on their own — but if you're writing scheduled jobs, debugging timezone bugs, or testing input validation, having them all one keystroke away pays off across a session.

12 tools

Unix Timestamp Converter

Convert between timestamps and dates

Cron Expression Generator

Generate and validate cron expressions

User Agent Parser

Parse and analyze user agent strings

HTTP Status Codes

Quick reference for HTTP status codes

Git Command Cheatsheet

Quick reference for Git commands

JSON Path Finder

Find and test JSON paths

MIME Type Finder

Find MIME types for file extensions

URL Parser

Parse and analyze URLs

IP Address Converter

Convert between IP address formats

Lorem Pixel Generator

Generate placeholder image URLs

AI Token Counter & Cost Estimator

Count tokens and estimate API cost across GPT, Claude, Gemini & more — with a live multi-model comparison and context-window fit

MCP Server Config Generator

Generate valid Model Context Protocol server config for Claude Desktop, Claude Code, Cursor, VS Code, Windsurf & Zed