JavaScript to JSON Converter - Fix Object Literals

Convert JavaScript object literals to valid JSON. Fix unquoted keys, trailing commas, single quotes. Browser-based, instant conversion.

JavaScript Object

Valid JSON

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Frequently Asked Questions

JSON requires double-quoted keys, no trailing commas, no single quotes, no comments, and no undefined values. JavaScript object literals are more permissive.

Unquoted keys become quoted, single quotes become double quotes, trailing commas are removed, and comments are stripped. The result is valid JSON.

This tool converts JS object literals to JSON format. It's for data extraction, not code transformation. Functions and undefined values cannot be represented in JSON.

Nested objects and arrays are fully supported. The entire structure is recursively converted to valid JSON.

Simple template literals without expressions are converted to regular strings. Complex expressions cannot be evaluated.

Yes. All processing happens in your browser. No JavaScript code is sent to any server.

Both single-line (//) and multi-line (/* */) comments are removed during conversion since JSON doesn't support comments.

Yes. After conversion, the output is validated as proper JSON. If conversion fails, an error message explains the issue.

Yes. JSON5 features like unquoted keys, trailing commas, and comments are handled. This tool effectively converts JSON5 to standard JSON.

Functions, undefined, Symbol, and BigInt cannot be represented in JSON. These will cause conversion errors or be omitted.

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