🧰 DevKit — Developer Utility Toolbox

A collection of 20+ essential developer utilities in a single, fast web app. Free, open-source, no ads, no tracking. Works offline — just open index.html in your browser.

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✨ Features

• 🌑 Dark mode — easy on the eyes, built for developers
• ⚡ Instant — no build step, no framework, pure vanilla JS
• 📱 Responsive — works on desktop, tablet, and mobile
• 🔒 Private — everything runs client-side, nothing leaves your browser
• 🔍 Searchable — quickly filter tools from the sidebar
• 📋 Copy to clipboard — one-click copy on every output

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🛠️ Tools Included

#	Tool	Description
1	🔐 Base64 Encode/Decode	Encode text to Base64 or decode Base64 back to text
2	🔗 URL Encode/Decode	Percent-encode/decode URL components
3	🎫 JWT Decoder	Decode JWT header + payload, show expiry status
4	🆔 UUID Generator	Generate cryptographically random UUIDs (v4)
5	#️⃣ Hash Generator	MD5, SHA-1, SHA-256 hashing via Web Crypto API
6	📄 JSON Formatter	Pretty-print, minify, and validate JSON
7	📝 Lorem Ipsum Generator	Generate placeholder text (words, sentences, paragraphs)
8	🎨 Color Converter	Convert between HEX, RGB, and HSL color formats
9	🔎 Regex Tester	Test regex patterns with live match highlighting
10	⏰ Timestamp Converter	Convert Unix timestamps to/from human-readable dates
11	🏷️ HTML Entity Encode/Decode	Encode/decode HTML special characters
12	📖 Markdown Preview	Write Markdown, see live rendered HTML preview
13	🔑 Password Generator	Generate strong passwords with configurable options
14	🔤 Text Case Converter	UPPER, lower, camelCase, snake_case, kebab-case, and more
15	📊 Word/Character Counter	Count words, chars, sentences, paragraphs, reading time
16	📱 QR Code Generator	Generate QR codes from any text or URL
17	⚖️ Diff Checker	Compare two texts line-by-line with highlighted differences
18	🔢 Number Base Converter	Convert between binary, octal, decimal, and hex
19	🗜️ CSS Minifier	Minify CSS by removing whitespace, comments, and redundancy
20	🗃️ SQL Formatter	Format or minify SQL queries for readability

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📸 Screenshots

Screenshots coming soon — contributions welcome!

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🚀 Getting Started

No build step required. Just open the file in your browser:

# Clone the repo
git clone https://github.com/Senzo13/devkit.git
# Open in your browser
open devkit/index.html
# or on Windows:
start devkit/index.html

Using a local server (optional)

# Pythoncd devkit && python -m http.server 8080
# Node.js
npx serve devkit
# Then open http://localhost:8080

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📁 Project Structure

devkit/
├── index.html # Main single-page app
├── css/
│ └── style.css # Dark theme, responsive layout
├── js/
│ ├── app.js # Tool switching, search, routing
│ └── tools/
│ ├── encoding.js # Base64, URL, HTML entity, JWT
│ ├── generators.js # UUID, password, lorem ipsum, QR code
│ ├── crypto.js # Hash generator (MD5, SHA-1, SHA-256)
│ ├── formatters.js # JSON, CSS minifier, SQL formatter, Markdown
│ ├── converters.js # Color, timestamp, number base
│ └── text.js # Regex, case converter, word counter, diff
├── README.md
└── LICENSE

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🤝 Contributing

Contributions are welcome! To add a new tool:

1. Fork the repository
2. Create a new function in the appropriate js/tools/*.js file (or create a new one)
3. Add the HTML view in index.html inside the <!-- TOOL VIEWS --> section
4. Register the tool in the TOOLS array in js/app.js
5. Submit a Pull Request

Tool template

Each tool needs:

• An init function that sets up event listeners
• An HTML section with id="tool-{your-id}" and class tool-view
• An entry in the TOOLS array: { id: 'your-id', icon: '...', name: 'Tool Name', init: initYourTool }

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📜 License

This project is licensed under the MIT License.

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Built with vanilla HTML, CSS, and JavaScript. No frameworks, no bloat, just tools.