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

What's Included? ## Data Conversion & Formatting ## Encoding & Security ## Developer Utilities ## Text & Content Tools ## Visual Tools ## Why I Built This ## Tech Stack ## Open Source ## What's Next? 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 As a backend developer with 12+ years of experience, I use these tools daily. I wanted something that: The project is open source on GitHub. Feel free to: What tools would YOU want to see? Drop a comment below! 👇 🔗 Try it: dev-tools.online Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well For further actions, you may consider blocking this person and/or reporting abuse - 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 - 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 - 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 - 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 - 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 - 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 - Just works - No friction, no distractions - Respects privacy - Client-side processing only - Loads fast - No bloated frameworks - Stays free - Forever - Vanilla HTML/CSS/JS (keeping it simple) - No external API calls for processing - Mobile responsive - Dark mode friendly - ⭐ Star if you find it useful - 🐛 Report bugs or request features - 🤝 Contribute new tools - Image optimization tools - API request builder - JSON Schema validator - Code minifiers (HTML, CSS, JS)