I Built 24 Free Developer Tools - No Signup, No Ads, No BS

[MyrinNew]

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:

1. Just works - No friction, no distractions
2. Respects privacy - Client-side processing only
3. Loads fast - No bloated frameworks
4. 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







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