Show HN: Dev Utility Hub – Client-side only developer tools (JSON, JWT, Cron)

I built a collection of developer utilities that run entirely in the browser.

https://tools.hun-ing.com

Motivated by privacy concerns with existing online formatters/decoders. Features:

- No server-side data processing (verified via Network tab)

- JSON Formatter, JWT Decoder, Cron Parser, Unix Timestamp, Diff Checker, etc.

- Built with Next.js 16, Tailwind CSS.

Feedback welcome.