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JS Object To JSON

Transform JavaScript object literals into valid JSON with proper quoting, formatting, and real-time conversion in your browser.

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Convert JavaScript Object Literals to JSON

JavaScript object literals are convenient in code but are not valid JSON. Keys may be unquoted, strings may use single quotes, and trailing commas are allowed. APIs, config files, and databases often require strict JSON. This tool converts JavaScript object syntax into properly formatted JSON in real time.

What this tool does

Paste a JavaScript object literal in the input panel. The converter parses unquoted keys, single quotes, trailing commas, and comments, then outputs indented JSON you can copy or download. Results update automatically as you edit.

Common use cases

  • Turn config objects from JavaScript source into JSON for APIs or environment files.
  • Normalize object literals copied from browser devtools or documentation.
  • Prepare data for tools that only accept strict JSON input.

Related tools

After converting to JSON, you can format or transform it further with the JSON Formatter, convert to YAML with the JSON to YAML Converter, or validate structure using the JSON Validator.

Frequently Asked Questions

What JavaScript object syntax is supported?

The parser handles unquoted keys, single-quoted strings, trailing commas, and comments. Standard JSON input is also accepted and reformatted with indentation.

Can I paste an object copied from browser devtools?

Yes. Objects copied from the console often use unquoted keys and single quotes. This tool normalizes that syntax into valid JSON automatically.

Does this support functions or undefined values?

No. JSON only supports data values like strings, numbers, booleans, arrays, objects, and null. Functions, undefined, and symbols cannot be represented in JSON and will cause a parse error.

Is my data sent to a server?

No. Parsing and conversion run entirely in your browser. Your object literals never leave your device.

What is the difference between a JS object and JSON?

JSON requires double-quoted keys and strings, disallows trailing commas and comments, and supports only data types. JavaScript object literals are more flexible, which is why conversion is needed before sending data to JSON-only systems.

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