About JSON Toolbox
JSON Toolbox is an all-in-one online JSON processing tool for frontend, backend, QA, DevOps, and product teams — covering reading, validation, conversion, diffing, and data export.
Privacy & security
- Local processing: all parsing, conversion, comparison, and export runs in your browser.
- No data upload: we never send your pasted JSON to any server.
- No accounts: no sign-up required, and no cloud history is stored.
- XSS protection: Diff and other HTML output is sanitized before rendering.
Supported features
- JSON formatting, minification, and syntax validation
- JSON tree view with path copying
- JSON diff comparison
- JSON ↔ YAML, JSON → XML, JSON → CSV / Excel
- JSONPath expression testing
Usage notes
Only standard JSON is supported (no JSON5 comments or trailing commas). Files over 2 MB may lag; over 10 MB should be split or handled with a local CLI tool.