JSON Playground Tools – All-in-One Client-Side Developer Toolkit

Summary: JSON Playground offers nine integrated tools including a JSON formatter with tree view and CSV export, JWT debugger supporting HS256/RS256/ES256, and an unlimited fake data generator. It runs entirely client-side, ensuring data privacy and offline availability as a progressive web app.

What it does

It provides essential developer utilities such as JSON formatting, JWT debugging, fake data generation, and encoding tools within a single platform that operates fully in the browser without server interaction.

Who it's for

Developers needing a privacy-focused, offline-capable toolkit for JSON manipulation, token debugging, and data generation.

Why it matters

It solves privacy concerns by processing all data locally and offers uninterrupted access through offline support.