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JSON Formatter, Validator & Tree Explorer

Validate, pretty-print, minify, query paths and explore JSON as an interactive collapsible tree.

๐Ÿ”’ 100% Local Browser Execution โ€” Files never leave your device โœ“ No email ยท No sign-up ยท No watermark ยท Free
โœ“ Valid JSON
Raw JSON Input
Formatted Output Click any key in Tree mode to copy path 
  
 
 
   
  
 ๐Ÿ”— Chain next workflow: Jump straight to a related tool 
  .* Live Regex Tester, Highlighter & Cheat Sheet  ๐Ÿ” Package.json & MCP Manifest Security Auditor  ๐Ÿ“ธ Code-to-Image Snapshot Studio  
 
 
  
 
 
 
 
How to Use JSON Formatter, Validator & Tree Explorer
 
     
  1. Paste or drop any raw, minified, or broken JSON payload into the editor (or click "Load Sample API JSON").
  2. Instantly see syntax validation (with exact line/column error pinpointing) and switch between Pretty Print (2/4 spaces), Minified, Interactive Tree, or TypeScript Interfaces.
  3. Click any node in the Tree Explorer to copy its exact JSONPath (e.g. data.users[0].id) or export array data directly to CSV.
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Why Developers Need a 100% Local JSON Workbench

      
Many popular online JSON formatters log pasted payloads on backend servers or inject third-party analytics scripts that capture API responses containing production bearer tokens, customer PII, or internal database schemas. Shoal's JSON Formatter & Tree Explorer executes strictly inside your browser's JavaScript engine with zero network calls.

      
    
        
  • Instant Error Pinpointing: Highlights the exact character offset, line, and column when a trailing comma or unquoted key breaks your JSON.
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  • Interactive Tree & Path Copier: Expand or collapse deeply nested objects and click any key to copy its dot/bracket path for JavaScript or jq queries.
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  • TypeScript Interface & CSV Export: Automatically infer clean TypeScript interface definitions or flatten JSON object arrays into spreadsheet-ready CSV files.
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