DevToolkit

Essential toolkit for developers. String transformations, number converters, calculator, and math operations - all in one place.

Transform your browser into a powerful development workspace with DevToolkit - a beautiful, fast, and privacy-focused toolkit that combines essential string transformations and number utilities. Everything you need for daily development work, right at your fingertips. ✨ KEY FEATURES 🔤 STRING UTILITIES - 16 Powerful Transformations Case Transformations: • UPPERCASE - Convert all text to uppercase letters • lowercase - Convert all text to lowercase letters • Capitalize - Make the first letter of text uppercase • Title Case - Capitalize the first letter of each word • camelCase - Convert text to camelCase format for JavaScript variables • snake_case - Convert text to snake_case format for Python/database naming • kebab-case - Convert text to kebab-case format for URLs and CSS classes Text Manipulation: • Reverse - Reverse the order of characters in your text • Trim - Remove leading and trailing whitespace • Remove Spaces - Strip all spaces from text • Remove Duplicates - Remove duplicate lines from multi-line text Encoding & Formatting: • URL Encode - Encode text for safe URL usage • URL Decode - Decode URL-encoded text back to readable format • Base64 Encode - Encode text to Base64 format • Base64 Decode - Decode Base64 encoded text • Slugify - Convert text to URL-friendly slugs (hello-world-format) 🔢 NUMBER UTILITIES - Complete Mathematical Toolkit 🧮 Full-Featured Calculator: • Basic Operations: Addition, Subtraction, Multiplication, Division • Decimal Support: Work with floating-point numbers • Percentage Calculations: Quick percentage operations • Memory Functions: Clear and backspace for easy corrections • Live Expression Display: See your calculation as you build it (e.g., "2 + 3") • Keyboard Support: Type directly on your keyboard - no mouse needed! Calculator Keyboard Shortcuts: • 0-9: Number input • +, -, *, /: Mathematical operations • Enter or =: Calculate result • Backspace: Delete last digit • Escape or C: Clear calculator • .: Decimal point • %: Percentage 🔄 Number Base Converters: Convert numbers between different number systems instantly: • Binary (Base 2) - Perfect for bit operations and computer science • Octal (Base 8) - Unix permissions and legacy systems • Decimal (Base 10) - Standard number system • Hexadecimal (Base 16) - Color codes, memory addresses, and more Smart Input Detection: • Automatic detection of input format (0b for binary, 0o for octal, 0x for hex) • One-click copy buttons for each conversion • Real-time conversion as you type 📐 Math Operations: • Square Root (√) - Calculate √x with precision • Square (x²) - Calculate x squared • Percentage Calculator - Find x% of y • Sum Calculator - Add comma-separated numbers (e.g., 1,2,3,4,5) • Instant results with copy functionality 📊 REAL-TIME TEXT ANALYSIS Get instant insights about your text: • Character Count - Total characters including spaces • Word Count - Number of words in your text • Line Count - Number of lines • Unique Characters - Count of distinct characters • Number Count - How many digits are in the text • Space Count - Total spaces • Uppercase Letters - Count of capital letters • Lowercase Letters - Count of small letters • Special Characters - Punctuation and symbols Perfect for: • Meeting character limits (Twitter, SMS, meta descriptions) • Writing requirements (essays, articles, blog posts) • Code review and documentation • Data validation and quality checks 📈 USAGE STATISTICS Track your productivity: • Daily Operations Counter - Resets at midnight • Total Operations Counter - Lifetime statistics • Beautiful animated number displays • No data sent anywhere - all stored locally on your device 🎨 BEAUTIFUL DESIGN • Modern gradient theme (Indigo → Violet → Fuchsia) • Smooth animations and transitions • Clean, intuitive tabbed interface • Responsive design that adapts to your workflow • Professional UI inspired by modern design principles 🚀 USE CASES For Developers: • Convert variable naming conventions (camelCase ↔ snake_case ↔ kebab-case) • Encode/decode URLs and Base64 for API testing • Calculate percentages for CSS layouts and responsive design • Convert between number bases for low-level programming • Quick math operations without leaving your browser • Generate URL-friendly slugs for routes and endpoints For Content Creators: • Format text for different platforms • Count words and characters for content requirements • Create SEO-friendly URLs with slugify • Remove duplicate lines from lists • Text analysis for optimization For Students: • Math calculations and base conversions • Text transformations for assignments • Character counting for essay requirements • Quick reference for encoding formats For Everyone: • Basic calculator always at hand • Text formatting and cleanup • Copy/paste utilities • Number conversions for daily tasks 🔒 PRIVACY & SECURITY - YOUR DATA STAYS YOURS 100% Private & Secure: ✅ All processing happens locally in your browser ✅ Zero data collection - we don't track anything ✅ No external API calls or network requests ✅ No analytics, no tracking, no third-party services ✅ Open source - verify the code yourself ✅ Minimal permissions - only clipboardWrite and storage What We DON'T Do: ❌ No data collection ❌ No browsing history tracking ❌ No external server communication ❌ No user profiling ❌ No data selling ❌ No advertisements Local Storage: The only data stored is your usage statistics (operation counts), which: • Lives only on your device • Never transmitted anywhere • Can be cleared by uninstalling the extension • Used only to show you your productivity stats ⚡ PERFORMANCE • Lightning Fast: All operations execute instantly • Lightweight: Under 100KB total size • No Dependencies: Pure vanilla JavaScript • Offline Ready: Works without internet connection • Low Memory: Minimal resource usage • Battery Friendly: Efficient code that doesn't drain power 🎯 WHY CHOOSE DEVTOOLKIT? All-in-One Solution: Instead of opening multiple websites or apps for different tasks, get everything in one place. One click on your browser toolbar gives you access to 35+ utility functions. Speed & Efficiency: No page loads, no waiting, no ads. Instant access to tools you use every day. Privacy First: Unlike online tools, your data never leaves your computer. No login required, no tracking, no compromises. Professional Quality: Built by developers, for developers. Clean code, comprehensive testing (138 test cases), and attention to detail. Open Source: Full transparency. Review the code, contribute improvements, or customize for your needs. GitHub: https://github.com/iHiteshAgrawal/DevToolkit 🛠️ TECHNICAL DETAILS Technologies: • Pure Vanilla JavaScript - No frameworks, no bloat • Chrome Extension Manifest V3 - Latest standard • CSS3 - Modern gradients and animations • 100% Client-Side - No backend required Quality: • 138 Comprehensive Test Cases • 100% Function Coverage • ~1,500 Lines of Code • Well-documented and maintainable Compatibility: • Chrome (recommended) • Edge (Chromium-based) • Brave • Opera • Any Chromium-based browser 📖 HOW TO USE 1. Install the Extension Click "Add to Chrome" and pin it to your toolbar for easy access 2. Choose Your Tool • Strings Tab: Text transformations and analysis • Numbers Tab: Calculator, converters, and math operations 3. Work Efficiently • Type or paste your input • Click a transformation or use the calculator • Copy results with one click • Track your productivity with built-in stats Pro Tips: • Pin the extension to your toolbar for quick access • Use keyboard shortcuts in the calculator (just start typing!) • Copy individual conversion results with dedicated buttons • Export text transformations for later use 🎓 PERFECT FOR • Software Developers & Engineers • Web Designers & Front-end Developers • Content Writers & Copywriters • Students & Researchers • Data Analysts • SEO Specialists • Social Media Managers • Anyone who works with text and numbers! ⭐ FEATURES SUMMARY String Operations: 16 Number Utilities: 19+ Total Functions: 35+ Test Cases: 138 Data Collection: ZERO Privacy: 100% Price: FREE Forever 🔄 REGULAR UPDATES We're constantly improving DevToolkit based on user feedback. Upcoming features: • Temperature converter (°C ↔ °F) • Unit converter (metric ↔ imperial) • JSON formatter and validator • Color converter (RGB, HEX, HSL) • Hash generators (MD5, SHA) • And more! 💬 SUPPORT & FEEDBACK Need Help? • Visit our GitHub repository for documentation • Report bugs or request features via GitHub Issues • Check out our comprehensive README and guides Love DevToolkit? • Leave a 5-star review • Share with fellow developers • Star us on GitHub • Spread the word! 📜 LICENSE & CREDITS • MIT License - Free to use • Open Source - github.com/iHiteshAgrawal/DevToolkit • Made with ❤️ by Hitesh Agrawal (@iHiteshAgrawal) 🚀 GET STARTED NOW Install DevToolkit today and transform your browser into a powerful development workspace. Join thousands of developers who trust DevToolkit for their daily workflow. - No registration. No tracking. Just tools that work. - Click "Add to Chrome" to get started in seconds! DevToolkit - Essential tools for essential work. 🔒 Privacy-Focused • ⚡ Lightning Fast • 🎨 Beautiful Design • 💯 Free Forever