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About JSON Beautifier
JSON Beautifier is a free, browser-based tool that formats, validates and minifies JSON. Paste raw or minified JSON and get clean, indented, syntax-highlighted output instantly — then convert it to XML, CSV or Excel. Every operation runs locally in your browser, so your data is never uploaded to a server.
How to use JSON Beautifier
- Paste or type your JSON into the editor.
- It is validated as you type — errors are flagged with the line and reason.
- Use Beautify to indent and format, or Minify to strip whitespace.
- Convert the result to XML, CSV or Excel, or copy it with one click.
Frequently asked questions
- Is this JSON formatter free?
- Yes. JSON Beautifier is completely free with no sign-up, no ads and no usage limits.
- Is my JSON data safe?
- Yes. All formatting, validation and conversion happen locally in your browser using JavaScript. Your JSON is never sent to or stored on any server.
- Can it convert JSON to CSV or Excel?
- Yes. After formatting, you can export your JSON to XML, CSV or an Excel-compatible spreadsheet.
- Why is my JSON invalid?
- The validator points to the exact line where parsing failed. Common causes are trailing commas, single quotes instead of double quotes, and unquoted keys.
- Does it work offline?
- Once the page has loaded it runs entirely client-side, so it keeps working even without a connection.
- How do I convert JSON to XML?
- Format your JSON, then choose the XML option to download or copy an XML version of the same data.
- How do I minify JSON?
- Paste your JSON and click Minify — it removes whitespace and line breaks to produce the smallest valid output, ready to copy.