Yes. The error message from the browser's built-in JSON parser is displayed directly, which typically includes the position of the unexpected character.
Free Developer Tool
JSON Formatter, Validator & Converter
Instantly format, validate, and minify JSON — and convert it to CSV or XML. Everything runs in your browser; no data is uploaded anywhere.
- ✔ Format & validate
- ✔ Minify
- ✔ JSON → CSV
- ✔ JSON → XML
- ✔ Free Forever
Format, Validate and Convert JSON Instantly
JSON is everywhere — API responses, configuration files, log output, database exports — and unformatted JSON is genuinely hard to read and debug. This tool beautifies it with proper indentation, validates the structure and pinpoints exactly where a syntax error is, minifies it back for production use, and converts it to CSV or XML when another system needs a different format.
How It Works
1. Paste JSON
Paste raw, minified, or broken JSON into the input editor.
2. Format or Validate
Instantly see a formatted, syntax-highlighted version — or the exact error location.
3. Convert
Switch tabs to minify, or convert to CSV or XML.
4. Copy or Download
Copy to clipboard or download the result as a file.
Converts a JSON array of objects to CSV. Each object becomes a row;
keys from the first object become column headers. Nested objects are
flattened to a JSON string in the cell.
JSON Basics
What This Tool Does
Format & Validate
Converts compact or broken JSON into readable, indented output and pinpoints syntax errors.
Minify
Strips all whitespace for production APIs, config files, and CDN-served JSON.
JSON → CSV
Converts a JSON array of objects to a spreadsheet-ready CSV with your choice of delimiter.
JSON → XML
Converts JSON to well-formed XML with configurable root and array item element names.
FAQsJSON Formatter & Validator
Does the formatter tell me exactly where a JSON error is?
Does JSON to CSV work with nested objects?
Nested objects and arrays are serialized as a JSON string inside the CSV cell rather than flattened, since deeply nested structures don't map cleanly to flat table columns.
Is my JSON uploaded anywhere?
No. All formatting, validation, and conversion happens entirely in your browser using JavaScript. Nothing is sent to any server.