Hey devs! 👋
I got tired of:
- Tools that require signup just to format JSON
- Sites plastered with ads that make the page unusable
- "Free" tools that limit you to 3 uses per day
- Sending my code/data to random servers
So I built Dev Tools - a collection of 24 essential developer utilities that are:
✅ 100% Free - No premium tiers, no limits
✅ No Signup Required - Just use it
✅ Privacy-First - Everything runs in your browser, no data stored
✅ Fast & Clean - Minimal UI, maximum utility
What's Included?
Data Conversion & Formatting
- CSV Converter - CSV → JSON, SQL INSERT, PHP arrays
- YAML/JSON Converter - Bidirectional conversion
- JSON Parser - Format, minify, validate, and even repair broken JSON
- SQL Formatter - Beautify or compress SQL queries
Encoding & Security
- Base64 Encoder - Encode/decode text and files
- Hash Generator - MD5, SHA-1, SHA-256, SHA-512
- URL Encoder - Encode/decode + parse URL components
- JWT Decoder - Inspect JSON Web Tokens
- Password Generator - Secure random passwords
Developer Utilities
- Regex Tester - Live matching with explanation
- Cron Parser - Human-readable cron explanations
- Timestamp Converter - Unix ↔ Human dates
- UUID Generator - Generate, validate, format UUIDs (v4)
- Diff Checker - Compare texts, highlight differences
Text & Content Tools
- Markdown Preview - Live preview with HTML export
- Code Editor - HTML/CSS/JS with live preview
- Text Case Converter - camelCase, snake_case, UPPER, etc.
- Slug Generator - URL-friendly slugs
- Lorem Ipsum Generator - Placeholder text
- Sort Lines - Sort, dedupe, reverse, shuffle
Visual Tools
- Color Picker - HEX, RGB, HSL, CMYK conversion
- QR Code Generator - URLs, text, and more
- Base Converter - Binary, octal, decimal, hex
- HTML Entity Encoder - Encode/decode special characters
Why I Built This
As a backend developer with 12+ years of experience, I use these tools daily. I wanted something that:
- Just works - No friction, no distractions
- Respects privacy - Client-side processing only
- Loads fast - No bloated frameworks
- Stays free - Forever
Tech Stack
- Vanilla HTML/CSS/JS (keeping it simple)
- No external API calls for processing
- Mobile responsive
- Dark mode friendly
Open Source
The project is open source on GitHub. Feel free to:
- ⭐ Star if you find it useful
- 🐛 Report bugs or request features
- 🤝 Contribute new tools
What's Next?
I'm planning to add:
- Image optimization tools
- API request builder
- JSON Schema validator
- Code minifiers (HTML, CSS, JS)
What tools would YOU want to see? Drop a comment below! 👇
🔗 Try it: dev-tools.online
Top comments (1)
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