Format, validate and minify JSON, or convert between JSON, CSV and XML online. No upload — everything stays in your browser.
Paste your JSON into the editor. If it is valid, it is formatted with clean indentation so nested objects and arrays are easy to scan; if it is not, the validator points you at the problem so you can fix the syntax. Use minify to strip whitespace down to the smallest valid payload, or convert the same data between JSON, CSV and XML.
Everything updates as you work, so you can paste a messy API response and immediately get a readable, correctly structured version to copy back out.
JSON copied from logs, network tabs or config files is often minified or malformed, which makes it hard to read and easy to misedit. Formatting reveals the structure at a glance, and validation catches the trailing commas, unquoted keys and mismatched brackets that break parsers before they reach your code.
Converting between JSON, CSV and XML saves you from writing throwaway scripts when a spreadsheet needs your API data, or when a legacy system expects XML.
The tool parses your input with the browser's own JSON engine, then re-serializes it with your chosen indentation, or flattens it for CSV and wraps it for XML. All of this happens locally in your browser — your data is never uploaded, which matters when the JSON contains configuration, tokens or customer records you would rather not send anywhere.
Because parsing is native, even large documents format quickly, limited only by your device.
No. Formatting, validation and conversion all run in your browser; nothing is uploaded.
It removes all non-essential whitespace, producing the smallest valid JSON — useful for reducing payload size.
Yes. The converter maps your JSON to CSV or XML and back, so you can move data between formats.
The validator flags syntax errors such as trailing commas, unquoted keys or unbalanced brackets so you can correct them.