JSON Tools

JSON Formatter

The everyday pretty-printer with 2/4-space or tab indent.

The everyday pretty-printer with 2/4-space or tab indent. Example: format a pasted response to read it.
Format & indent
  1. Paste raw JSON.
  2. Apply 2-space, 4-space or tab indent.
  3. Copy the formatted JSON.
Example: format a pasted API response so it is readable.
Use for day-to-day reading and tidying of JSON.
Client-sideRuns entirely in your browser — your data never leaves your device.

JSON Formatter is a browser-based web developer tool on WebDevToolsBase. The everyday pretty-printer with 2/4-space or tab indent. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.

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JSON Formatter is a free JSON Tools utility that runs entirely in your browser — nothing you enter is uploaded.

JSON input
Formatted output




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How to use JSON Formatter

  
    
      
  1. Type or paste your JSON into JSON Formatter's input area.
    2. 
      
  2. Use the Indent setting to control the result.
    3. 
      
  3. Select Format and the result updates immediately, with no upload.
    4. 
      
  4. When it looks right, Copy to save it.
    5. 
  

  
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About this tool

  
There is no server behind JSON Formatter. JSON Formatter validates and reshapes your JSON locally with no server round-trip.

  
Because parsing is local, sensitive payloads never leave the page. Your input never leaves the page, and no account or install is required.

    
When to choose Json Formatter

  
This tool is for formatting messy JSON into readable, indented text.

  
Worked example: You paste a minified API response and get it pretty-printed for inspection.

  
Formats and indents JSON; the validator variant emphasises catching syntax errors.

  
Does formatting change my JSON's meaning?
No — it only adjusts whitespace and indentation; the data and structure stay identical.

  
Frequently asked questions

  

      
What is JSON Formatter for?
JSON Formatter lets you format your input right in the browser using the Indent control, with the result shown instantly and nothing uploaded.

      
Do I need an account for JSON Formatter?
No — JSON Formatter needs no account, sign-up or installation.

      
Is my input private in JSON Formatter?
Yes — your input never leaves your device; JSON Formatter does all the work in your browser.

      
Can JSON Formatter handle large or deeply nested JSON?
Yes. JSON Formatter parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.

      
Can I use JSON Formatter without a connection?
Yes — after the first load JSON Formatter runs entirely offline.

  

  
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