JSON Formatter & Dev Tools

JSON Formatter & Developer Tools

DevToolkit is a powerful offline developer utility app designed for software engineers, backend developers, DevOps engineers, and students.

Quickly format JSON, decode Base64, test regex patterns, inspect JWT tokens, and debug APIs directly from your phone.

🚀 Core Developer Tools
JSON Formatter & Validator

• Format and beautify JSON instantly
• Validate JSON structure
• Minify JSON for compact output

Text & Data Utilities

• Regex tester with live feedback
• XML ↔ JSON converter
• Diff checker for text comparison
• Base64 encode / decode
• JWT decoder (header & payload)

🌐 API & Network Tools

• REST API tester (GET, POST, PUT, DELETE)
• HTTP status code reference
• URL encode / decode
• HTTP header viewer

Network utilities:
• Port scanner
• Whois lookup
• Subnet calculator
• SSL checker
• Latency monitor

⚙️ Developer Utilities

• UUID generator
• Hash generator (MD5, SHA-1, SHA-256)
• Timestamp ↔ date converter
• Color converter (HEX ↔ RGB)
• QR code generator
• Cron expression builder

💡 Why Developers Use DevToolkit

✔ Works completely offline
✔ Clean, fast, lightweight UI
✔ Dark mode support
✔ Built for developers, not ads
✔ Perfect for debugging during on-call

🔒 Privacy First

DevToolkit works completely offline.
Your data never leaves your device.

No login. No cloud dependency.