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Andrew Rozumny
Andrew Rozumny

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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 compilation — all running client-side with zero dependencies.
Web Crypto API, Canvas API, and WebAssembly make things possible that seemed server-only two years ago.

2. Default values matter more than features

Tools with pre-filled examples get used immediately.
Tools with empty inputs get closed immediately.
Every single tool now has real, meaningful default data.

3. Tool chaining changes how people work

Added a "Send to →" feature that pipes output from
one tool directly into another. YAML → JSON Formatter
→ JSON Validator in one click.
People stay on the site 3x longer when they chain tools.

4. Smart Paste is underrated

Paste anything — JWT, JSON, SQL, cURL command,
Base64 string — and the site auto-detects the format
and opens the right tool. Sounds simple, surprisingly
useful in practice.

What's next

Still broken: LESS → Tailwind mapping (partial output)
Still ugly: Crontab Generator UI
On the list: JSON Schema from TypeScript,
HTTP Headers Reference,
More AI-powered explanations

Link: tooldock.org

What tools do you reach for daily that aren't there yet?

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