I added 40 tools to my dev toolkit site in one week — here's what I learned

A week ago ToolDock had 20 tools. Today it has 60+. Here's what I shipped, what broke, and what actually matters. What I built All tools run entirely in your browser. No sign-up, no server round-trips, no data leaves your device. This week I added: AI & LLM tools Token Counter — count tokens before sending to GPT/Claude LLM Cost Calculator — compare API costs across providers MCP Config Generator — generate Claude Code config files Cursor Rules Generator — .cursorrules for your stack System Prompt Builder — templates for any LLM CSS & Styling CSS ↔ Tailwind converter SCSS/LESS compilers (browser-based, no Node needed) Tailwind CSS Cheatsheet with rem/px display Developer utilities .gitignore Generator .env File Validator Image Converter (PNG/WebP/JPEG, multi-upload) Word Counter with Flesch reading score chmod Calculator JSONPath Tester OpenAPI Spec Validator What I learned 1. Browser APIs are more powerful than most developers realize SHA-256 hashing, image conversion, SCSS compilatio