How to use JSON Viewer
- Type or paste your JSON into JSON Viewer's input area.
- Adjust the Expand option to match what you need.
- Watch the output update instantly while you adjust the JSON.
- Use Copy to keep or reuse the result.
About this tool
JSON Viewer runs entirely in your browser. JSON Viewer parses JSON entirely in your browser, so large or deeply nested documents stay on your device.
Because parsing is local, sensitive payloads never leave the page. Your input never leaves the page, and no account or install is required.
Frequently asked questions
How do I use JSON Viewer?
Use JSON Viewer to process your input without installing anything using the Expand control; everything happens client-side.
Do I need an account for JSON Viewer?
No — JSON Viewer needs no account, sign-up or installation.
Does JSON Viewer upload my data?
No — JSON Viewer processes everything locally in your browser, so nothing you enter is uploaded or stored.
Can JSON Viewer handle large or deeply nested JSON?
Yes. JSON Viewer parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.
Does JSON Viewer work offline?
Once the page has loaded, JSON Viewer keeps working with no network connection.