JSON, YAML, XML & CSV editor
Format JSON / XML or convert JSON, YAML and header-based CSV with source and result side by side. Files and entered content are not sent to or stored on a server.
How to use
Format JSON / XML or convert JSON, YAML and header-based CSV with source and result side by side.
Supported formats & limits
JSON / YAML / XML / CSV → JSON / YAML / XML / CSV
Processing stays in this browser. File formats and available memory may limit the result.
JSON formatting retains original numeric tokens. Conversion rejects unsafe large JSON integers; quote IDs as strings.
JSON, YAML, XML & CSV editor User guide
Instructions
- Choose input and output formats, then paste or open text.
- Choose indentation; CSV output can protect formula-like values.
- Copy the formatted or converted result, save it as a file, or use it as the next source.
Example
Input / settings
{"id":90071992547409931234}
Result / checks
Same digits after formatting
Please note
- JSON formatting retains original numeric tokens. Conversion rejects unsafe large JSON integers; quote IDs as strings.
- CSV needs unique column headers and equal row widths; cells remain strings. XML only formats XML and rejects DTD declarations. Up to 200,000 input characters.