JSON Formatter & Validator

Format, validate & minify JSON online - syntax highlighting, exact error line numbers aur one-click copy/download. Free, fast & 100% private (data browser mein hi rehta hai).

Input JSON
Output 

    

  


  

  


  

  

    
Common JSON Errors and How to Fix Them

    
JSON validator error de raha hai? Yeh 5 sabse common galtiyan hain:

    

      1. Single quotes - JSON mein sirf double quotes valid hain.

      {'name': 'value'} → {"name": "value"}
    

    

      2. Trailing comma - Last item ke baad comma allowed nahi.

      {"a": 1, "b": 2,} → {"a": 1, "b": 2}
    

    

      3. Unquoted keys - Property names double quotes mein hone chahiye.

      {name: "value"} → {"name": "value"}
    

    

      4. Comments - JSON mein comments allowed nahi hain (JavaScript objects se different).

      {"a": 1 // comment} → {"a": 1}
    

    

      5. undefined / NaN - Yeh JSON values nahi hain; null use karo.

      {"a": undefined} → {"a": null}
    

  


  

    
What is JSON?

    
JSON (JavaScript Object Notation) web ka standard data exchange format hai - APIs, config files aur databases sab isse use karte hain. Yeh lightweight, human-readable aur har programming language mein supported hai. JSON mein 6 data types hote hain: string, number, boolean, null, object aur array.

    
Format vs Minify - kab kya use karein:

    
  


  

    
Frequently Asked Questions (FAQ)

    

      How do I format JSON online?
      
JSON input box mein paste karo aur Format click karo. Tool validate karta hai, proper indentation (2/4 spaces ya tabs) lagata hai aur syntax highlighting deta hai. Invalid JSON par exact error line number dikhta hai.

    

    

      How do I find errors in my JSON?
      
Validator exact line aur column number ke saath syntax error pinpoint karta hai. Common errors: trailing commas, single quotes, unquoted keys aur missing brackets.

    

    

      What is the difference between format and minify?
      
Format indentation/line breaks add karta hai readability ke liye. Minify saara whitespace remove karta hai smallest file size ke liye - APIs aur production ke liye ideal.

    

    

      Is it safe to paste sensitive JSON data here?
      
Haan. Saari processing browser mein locally hoti hai JavaScript ke native JSON parser se. Data kabhi upload, store ya transmit nahi hota.

    

    

      Why is my JSON invalid?
      
Common causes: single quotes, trailing comma, unquoted property names, comments, ya undefined/NaN values. Validator exact position dikhata hai.