JSON Parse and Stringify
Parse JSON text into a JSON value, or stringify JSON data into JSON text. Handle complete documents, quoted JSON string literals, and escaped payloads, then format, copy, or download the result in your browser.
Key Features
Parse JSON Strings
Parse JSON text, quoted JSON string literals, and escaped payloads into a readable result. Objects, arrays, strings, numbers, booleans, and null are all supported as the top-level value.
Stringify JSON Data
Turn a JSON object, array, or primitive value into JSON text, with an option to include the surrounding quotes of a complete JSON string literal for embedding.
Detect Input Representation
Choose auto-detect, a complete JSON document, or a JSON string literal. Auto-detect unwraps one serialization layer, but only when the inner text is itself valid JSON.
Pretty or Compact Output
Choose compact serialization or formatted output with two-space or four-space indentation. Compact output suits embedding, formatted output is easier to inspect.
Handle Nested Serialization
Decode one JSON string layer at a time when JSON has been embedded inside another JSON value, a log field, a database column, or a configuration variable.
Copy the Result
Copy parsed JSON or stringified output to the clipboard for code, API requests, logs, configuration, tests, or documentation.
Download Output
Download the result as a .json file after parsing, or as a .txt file after stringifying.
Browser-Based Processing
Parsing and stringification happen in your browser. No account is required and the input is not sent to a remote service.
How to Use
Choose Parse or Stringify
Choose Parse when you have JSON text or a JSON string and need the value it represents. Choose Stringify when you have JSON data and need a JSON text representation.
Enter the input
Paste a JSON document, a quoted JSON string, or an escaped payload. In Parse mode, pick auto-detect, JSON document, or JSON string literal to say how the input should be read.
Configure the output
Choose compact output or formatted output with two or four spaces. In Stringify mode, decide whether the result needs the surrounding quotes of a complete JSON string literal.
Run the operation
Click Parse JSON or Stringify JSON. The result also updates while you type. If the input is invalid, the error is reported with a line and column.
Copy or download
Check the result type and the output representation, then copy or download it. Test the result with the language or parser that will consume it.
Parse a Quoted JSON String
A JSON string literal holding an object, parsed back into the object itself.
"{\"name\":\"Alice\",\"age\":30}"A quoted JSON string literal: the object was serialized and stored as a string value.
{
"name": "Alice",
"age": 30
}Auto-detect unwrapped the string layer and formatted the result with two-space indentation.
Switch to Stringify with Include surrounding quotes to turn the object back into the original quoted string literal.
How to Parse and Stringify JSON Online
What Are JSON.parse and JSON.stringify?
JSON.parse() and JSON.stringify() convert between JSON text and values. JSON.parse reads valid JSON text and returns an object, array, primitive value, or null. JSON.stringify takes a value and returns JSON text.
An online Parse and Stringify tool is useful for inspecting stringified API fields, debugging logs, preparing embedded payloads, and checking how formatting and escaping change the output.
Parse vs Stringify
| Operation | Input | Output |
|---|---|---|
| Parse | JSON text | JSON-compatible value |
| Stringify | JSON-compatible value | JSON text |
How to Parse a JSON String
- Choose Parse.
- Paste the input: a JSON document or a quoted JSON string literal.
- Say how to read it: auto-detect, JSON document, or JSON string literal.
- Run Parse and check the reported result type.
- Repeat only when needed: if the result is still a string holding JSON text, parse one more layer.
How to Stringify JSON
- Choose Stringify.
- Enter JSON data: an object, array, string, number, boolean, or null.
- Choose formatting: compact, two spaces, or four spaces.
- Choose quote behaviour: turn on Include surrounding quotes when the result must be a complete JSON string literal.
- Copy or download the output.
JSON Documents and JSON String Literals
A JSON document stands on its own:
{"name":"Alice","age":30}A JSON string literal holds that document as a string value, so the quotes inside it are escaped:
"{\"name\":\"Alice\",\"age\":30}"The literal needs two steps: one parse to recover the inner text, and another to turn that text into a value. This page does one layer per operation, so a payload that was serialized several times has to be decoded one layer at a time, with a check in between.
How Auto-Detect Decides
Auto-detect parses the input once. If the result is a string whose content starts with { or [ and parses as valid JSON, it unwraps exactly one layer; otherwise the string is kept as the value. That heuristic handles the common case of a serialized API or log field, but it is still a guess.
Use JSON string literal mode when the extra layer must be there: it reports an error if the parsed value is not a string, and another if that string is not valid JSON. Use JSON document mode when the input should already be a complete document and must not be unwrapped.
Reading the Result Type
JSON is not only objects. A parsed value can be an object, an array, a string, a number, a boolean, or null, and the type is shown above the output. Code that assumes an object will fail on an array or a primitive, so check the type before writing a parser against the result.
Surrounding Quotes and Embedding
With Include surrounding quotes off, stringify returns JSON text such as {"id":1}, which is what most templates and config files expect. With the option on, the result is a complete JSON string literal such as "{\"id\":1}", which is what you need when the value has to be stored as a string inside another JSON document.
What This Page Does Not Do
Parse mode expects JSON-formatted text, so it does not turn prose or loosely structured text into JSON. It also does not escape non-ASCII characters or forward slashes, and it cannot accept JavaScript-only values, because the input has to be valid JSON. For escape sequences inside a string, use the JSON Escape and Unescape page; for human-readable text extraction, use the JSON to Text page; for structured plain text, use the TXT to JSON page.
Privacy and Browser-Based Processing
Parsing and stringification happen in the browser, so pasted payloads stay on your device. That suits API responses and log fields, but it is not a secret-management system. Avoid entering credentials, tokens, or confidential production logs into any online tool.
When to Use Local Code
For repeated pipelines, very large payloads, or confidential data, run JSON.parse and JSON.stringify in your own environment, where you control logging, error handling, and data retention. The browser tool is best for inspection, debugging, and one-off conversion.