JSON.stringify() online — JS, Python, Java snippets

Convert JSON to string
Escaped, quoted,
ready to embed.

Serialise any JSON object to an escaped string — the online equivalent of JSON.stringify(). Includes ready-to-copy code snippets for JavaScript, Python and Java.

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JSON.stringify() equivalent
json.dumps() Python snippet
Wrap in outer quotes option
Always free
Need the reverse? JSON String to JSON
JSON to String Converter   100% client-side
This tool is the reverse of JSON String to JSON. It converts a JSON object to its escaped string representation.
JSON input
  JSON string ready 

 
        
        

          

            How to do this in code
          

          

        

      

 
    

  

 
  
  
JSON to string in every language

  
The one-liner for each major language and environment.

  

    

      
 JavaScript / Node.js

      
JSON.stringify(obj) — built-in, no import needed. Add a second argument for a replacer and a third for indentation: JSON.stringify(obj, null, 2). To embed in another JSON value, call JSON.stringify(JSON.stringify(obj)).

    

    

      
 Python

      
import json; s = json.dumps(obj). Use json.dumps(obj, indent=2) for pretty output. For embedding: json.dumps(json.dumps(obj)). The ensure_ascii=False flag preserves Unicode characters.

    

    

      
 Java

      
With Jackson: new ObjectMapper().writeValueAsString(obj). With Gson: new Gson().toJson(obj). Both produce a compact JSON string. Use ObjectMapper().writerWithDefaultPrettyPrinter() for indented output.

    

    

      
 Other languages

      
PHP: json_encode($obj). Ruby: obj.to_json or JSON.generate(obj). Go: json.Marshal(obj). C#: JsonSerializer.Serialize(obj) or JsonConvert.SerializeObject(obj).

    

  

 
  

 
  


  
JSON object to string: when to stringify, and when to Base64-encode

  
Stringify JSON when the whole document has to travel as one text value: a field inside another JSON payload, a SQL TEXT column, a message-queue body or a test fixture embedded in code. The result is still readable JSON, only escaped. When the value must be safe for URLs, cookies, HTTP headers or tokens, escaping is not enough — encode it with JSON to Base64 instead.
To reverse the process and get the object back, use JSON String to JSON. To shrink the JSON before stringifying it, use the JSON Minifier.




  
  
JSON String to JSON
Unescape stringified or double-encoded JSON into an object.
JSON Minifier
Minify or beautify JSON and validate it in one click.
JSON to Base64
Encode JSON as standard or URL-safe Base64.
JSON Viewer
View, validate and explore JSON in a collapsible tree.
JSON Utilities
Flatten, unflatten, sort, merge and diff JSON documents.
Base64 to JSON
Decode Base64 and JWT payloads into readable JSON.
JSON to JSON Schema
Generate a JSON Schema (Draft-07 or 2020-12) from JSON.
JSON Schema to JSON
Generate realistic sample JSON from a JSON Schema.
GraphQL to JSON
Mock JSON, response data and JSON Schema from GraphQL SDL.
All utilities & encoding tools 

 
  
  
 
  

 
  
  

    
Frequently asked questions

    
Common questions about converting JSON to a string.

 
    

      
How do I convert JSON to a string?

      
Paste your JSON object or array into the converter above and click Convert. The output is the escaped string equivalent — identical to what JSON.stringify() produces in JavaScript. Copy it directly into your code or use it to embed JSON inside another JSON value.

    

 
    

      
What is the difference between JSON and a JSON string?

      
JSON is a data format — {"name": "Alice"}. A JSON string is the serialised text representation — "{\"name\":\"Alice\"}" — produced by JSON.stringify() in JavaScript or json.dumps() in Python. The JSON string can be stored in a text field, passed as an HTTP body, or embedded inside another JSON value.

    

 
    

      
How do I convert JSON to a string in JavaScript?

      
Use JSON.stringify(obj) — built-in, no library needed. For pretty output: JSON.stringify(obj, null, 2). To embed inside another JSON string: JSON.stringify(JSON.stringify(obj)). The result is a string with backslash-escaped quotes.

    

 
    

      
How do I convert JSON to a string in Python?

      
Use json.dumps() from the built-in json module: import json; s = json.dumps({"name": "Alice"}). Use indent=2 for readable output. Add ensure_ascii=False to keep Unicode characters as-is instead of escaping them to \uXXXX sequences.

    

 
  
    

      
How do I convert JSON to a string in Java?

      
With Jackson: new ObjectMapper().writeValueAsString(obj). With Gson: new Gson().toJson(obj). Both escape quotes and control characters exactly like this converter.

    


    

      
How do I store JSON in an environment variable?

      
Stringify it in compact form (no spaces) and wrap the value in single quotes in your .env file, or convert the JSON to KEY=VALUE pairs with the JSON to .env tool.

    

    
  

 


				
	
		
	


			
		
				
	

	
		
		



 

	
	

	
	
	
	
			
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