I got tired of developer tool websites with ads, tracking, and server-side processing. So I built my own.
DevTools.run
22 browser-based developer tools. Everything runs client-side — nothing is sent to a server.
The Tools
Text & Data
- JSON Formatter & Validator — paste, format, minify, syntax highlighting
- Base64 Encoder/Decoder — text and file support
- URL Encoder/Decoder — encodeURI vs encodeURIComponent
- YAML/JSON Converter — bidirectional with full parser
- Text Diff — side-by-side line diff with highlighting
Crypto & Security
- Hash Generator — MD5, SHA-1, SHA-256 via Web Crypto API
- JWT Decoder — inspect header, payload, signature
- Password Generator — configurable with strength meter
- UUID Generator — bulk v4 UUIDs, toggle hyphens
Developer
- Regex Tester — real-time match highlighting
- SQL Formatter — keyword uppercasing, indentation
- Cron Expression Parser — human-readable with next runs
- Unix Permissions Calculator — numeric + symbolic
- Markdown Preview — live rendering
Utilities
- Unix Timestamp Converter — seconds/milliseconds
- Color Converter — HEX, RGB, HSL with preview
- Lorem Ipsum Generator — paragraphs, sentences, words
- QR Code Generator — canvas-based, downloadable
- Aspect Ratio Calculator — common ratios + custom
Solana
- SOL/USD Calculator — live prices from CoinGecko
- Token Lookup — search by mint address
- Wallet Checker — balance, tokens, transactions
Tech Stack
- Next.js 14 (App Router)
- Tailwind CSS
- Zero external APIs for core tools
- Deployed on Vercel
All tools are open source: GitHub
Also Check Out
- Solana Trading Bot for Telegram — free, 40+ commands
- Bot Source Code — 4,100 lines, 7 revenue streams
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