weshoal.com Free Tools

JSON Formatter, Validator & Tree Explorer

Format, validate and minify JSON in your browser. Clear error messages, nothing uploaded.

In plain words: Paste messy or one-line JSON to make it readable, or check whether it's valid. It runs in your browser, so API keys or private data in your JSON never leave your machine.

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
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 any raw, minified or broken JSON into the editor (or click "Sample JSON").
  2. See instantly whether it is valid (with the parser error message if not), and switch between Pretty (2 or 4 spaces), Minify, Interactive Tree, TS Interfaces or JSON to CSV.
  3. In the Interactive Tree, click any key to copy its path (e.g. $.users[0].id), or use "Copy Output" to copy the formatted result.
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Why Developers Need a 100% Local JSON Workbench

      
Some online JSON formatters send what you paste to their servers, which is risky when it contains API tokens, customer data or internal schemas. WeShoal's JSON Formatter & Tree Explorer runs entirely inside your browser and never sends your JSON anywhere.

      
    
        
  • Instant Validation: Shows the parser's error message as soon as a trailing comma or unquoted key breaks your JSON.
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  • Interactive Tree & Path Copier: Expand or collapse nested objects and click any key to copy its path for use in code or jq queries.
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  • TypeScript & CSV: Generate a starter TypeScript type from your data, or turn an array of objects into CSV you can paste into a spreadsheet.
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