I built a collection of 100% client-side developer tools (JSON, Base64, Crontab). No server uploads, purely secure.

A developer launched a free browser-only toolbox for common tasks like JSON formatting, Base64, and crontab generation.

The tools include JSON-to-TypeScript, JSON-to-Go, a JSON formatter/validator, and a crontab expression generator.

Everything runs fully in the user’s browser, with no server uploads, logins, or ads.

That makes it a privacy-focused alternative for handling sensitive developer data safely and quickly.