Format, validate, and debug JSON in seconds. Learn the most common JSON errors, how to fix them, and how to convert JSON to TypeScript or CSV — with a free browser-based tool that never uploads your data.
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When two files look identical but only one works, you need a diff. Compare any two text or code blocks side-by-side, with line-level and word-level highlighting — without uploading sensitive code anywhere.
Instantly generate TypeScript interfaces from JSON objects.
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Tired of trying to read ugly, minified JSON? The JSON Formatter instantly transforms messy data into a clean, perfectly indented, and human-readable format. It also validates your JSON, pointing out any syntax errors so you can fix them fast. It's an essential tool for any developer working with APIs or configuration files.
The tool first tries to parse your text using `JSON.parse()`. If it's valid JSON, it's then re-formatted with `JSON.stringify()` using indentation to make it 'pretty'. If it's not valid, it catches the error and tells you where to look.
JSON (JavaScript Object Notation) is a lightweight data-interchange format. While it's easy for machines to parse, it can be hard for humans to read when it's 'minified' (all on one line). 'Pretty-printing' adds indentation and line breaks to reveal its nested structure.
Yes, it can handle large amounts of text, though performance may depend on your browser.
No, the original order of the keys in your objects is preserved.
The tool will display a descriptive error message, often with a line number, to help you find the mistake.
All calculations and data processing for this tool are performed locally in your browser. UtilToolkits does not send any of your data to an external server, ensuring your information remains private and secure.
AI: Describe this JSON