JSON Formatter & Viewer
Paste or upload JSON to validate it, browse it as a collapsible tree, and get a cleanly formatted, indented copy.
When you'd use this
- Formatting a minified JSON blob so it's actually readable
- Checking an API response's structure while debugging
- Validating that a JSON file is syntactically correct before using it
Read-only — this formats and displays JSON, it doesn’t let you edit values in place. Invalid JSON is flagged with the parser’s error message.