jsonwiz.dev

JSON Formatter & Validator

Input
0 B0 lines
Output will appear here
⌨ Keyboard shortcuts
⌘↵Format
⌘MMinify
⌘⇧CCopy output
⌘FSearch
⌘KClear

What this tool does

Parses, formats, and validates JSON entirely inside your browser. Nothing is uploaded — the privacy guarantee is architectural, not a policy.

How to use it

  1. Paste JSON or drag & drop a .json file
  2. Output formats automatically — use toolbar to minify, repair, or sort
  3. Switch to Tree view to explore nested data

Features

  • Auto-repair — trailing commas, single quotes, JS comments
  • Tree view — expand/collapse any depth
  • JSONPath search — filter by key, value, or path
  • Large files — Web Worker keeps tab responsive
  • Shareable URLs — share JSON ≤5KB via URL hash