Dev Toolkit

About

Dev Toolkit - JSON, Base64, JWT & URL Tools

Description:
A powerful developer toolkit with 9 essential tools - all in one place, all offline, all free.

Key Features:

- JSON Formatter & Validator
  Format and validate JSON with configurable indentation (2/4/tab). Minify support included.

- Base64 Encoder/Decoder
  Convert text to Base64 and back. Format validation included.

- JWT Token Tools
  Decode JWT tokens to view header, payload, and signature. Encode with HMAC-SHA256 real signing.

- URL Encoder/Decoder
  Handle special characters in URLs. Encode/decode query parameters.

- Timestamp Converter
  Convert Unix timestamps (seconds/milliseconds) to dates and back. UTC and local time display. Supports "now" keyword.

- Hash Generator
  Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes instantly using Web Crypto API.

- UUID Generator
  Generate UUID v4 identifiers. Batch generation up to 100 at once.

- Color Converter
  Convert between HEX, RGB, and HSL formats. Auto-detects input format.

- Diff Viewer
  Compare two texts line by line. Shows added, removed, and unchanged lines with summary.

Additional Features:
- Dark Mode Support
- Keyboard Shortcuts (Ctrl+Enter to convert, Alt+1-9 for tabs)
- Input History (last 5 per tab, auto-restored)
- Copy to Clipboard with Toast Notification
- Simple and Clean Interface
- Instant Results
- No External API Calls - Works 100% Offline

Perfect for:
- Web Developers
- API Testers
- Security Engineers
- DevOps Teams
- Anyone working with encoding, formatting, or data conversion

Privacy & Security:
- Zero permissions required
- No data collection
- All processing happens locally in your browser
- No external server communication
- Open source: https://github.com/somaz94/dev-toolkit-google-extension