Dev Text Toolkit is a super-lightweight utility app for developers. Instantly format JSON, YAML, or XML; encode or decode Base64 and URLs; inspect JWT headers and payloads securely offline; generate hashes (MD5, SHA1, SHA256) and UUIDs; test regex with live highlighting; convert epoch ↔ datetime by timezone; and build cron expressions visually. Designed with a clean tabbed interface, fast local processing, short history, and theme memory via SharedPreferences—no database, full privacy.