DevToolBox - All-in-One Developer Toolkit

15+ essential developer tools in one beautiful, fast, offline-capable web app. No login required. No API keys. 100% free and open source.

Live Demo

👉 https://daxxteam.github.io/devtoolbox/

Features

Formatters

Tool	Description
JSON Formatter	Format, validate and beautify JSON data
Minify / Beautify	Minify or beautify HTML, CSS, JavaScript

Encoders / Decoders

Tool	Description
Base64	Encode or decode Base64 strings
URL Encoder	Encode or decode URL components
HTML Entities	Encode or decode HTML entities
JWT Decoder	Decode and inspect JSON Web Tokens

Generators

Tool	Description
Hash Generator	Generate MD5, SHA-1, SHA-256, SHA-512 hashes
UUID Generator	Generate random UUIDs (v4) with options
Lorem Ipsum	Generate placeholder text (words, sentences, paragraphs)
Password Generator	Generate secure random passwords
CSS Gradient	Create beautiful CSS gradients

Converters

Tool	Description
Color Converter	Convert between HEX, RGB, HSL
Timestamp Converter	Convert Unix timestamp to date and vice versa
Unit Converter	Convert data storage (B, KB, MB, GB, TB) and CSS units
Number Base	Convert between decimal, binary, hex, octal

Utilities

Tool	Description
Regex Tester	Test and debug regular expressions
Text Diff	Compare two texts and find differences

Why DevToolBox?

• No API Keys Required - Everything runs in your browser
• 100% Free - No premium features, no upsells
• Works Offline - PWA with service worker caching
• Installable - Add to home screen on mobile/desktop
• Fast & Lightweight - No frameworks, pure vanilla JS
• Privacy First - No data sent to servers
• Beautiful UI - Modern dark theme design
• Mobile Friendly - Fully responsive

Installation

Use Online

Just visit https://daxxteam.github.io/devtoolbox/

Install as App (PWA)

1. Open the website in Chrome/Edge
2. Click the install icon in address bar
3. Or: Menu > Install DevToolBox

Self-Host

git clone https://github.com/DAXXTEAM/devtoolbox.git
cd devtoolbox
# Serve with any static server
npx serve .
# Or just open index.html

Tech Stack

• HTML5 - Semantic markup
• CSS3 - Custom properties, Grid, Flexbox
• Vanilla JavaScript - No frameworks
• Web Crypto API - For hash generation
• Service Worker - Offline support
• PWA - Installable web app

Browser Support

Browser	Support
Chrome	✅ Full
Firefox	✅ Full
Safari	✅ Full
Edge	✅ Full
Opera	✅ Full

Contributing

Contributions are welcome! Feel free to:

• Report bugs
• Suggest new tools
• Submit pull requests

Roadmap

• Image to Base64
• Markdown Preview
• SQL Formatter
• Cron Expression Parser
• JSON to CSV/YAML
• Text Case Converter

Author

DAXXTEAM

• GitHub: @DAXXTEAM
• Portfolio: portfolio.vclub.tech
• LinkedIn: Arpit Singh

License

MIT License - Free for personal and commercial use.

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Made with ❤️ in India by DAXXTEAM