Paste or upload JSON
Paste your JSON or upload a .json file.
JSON Viewer & Tree Explorer
Use this online JSON formatter and beautifier to view JSON in a readable tree format. Open JSON files, paste raw data, and explore nested structures instantly in your browser.
Or upload a JSON file
Processed in your browser · JSON over 10 MB is not loaded
JSON Tree View
HOW IT WORKS
How to debug JSON with an online viewer
Paste your JSON, view it in a readable tree, and copy or download the formatted result. Everything runs in your browser with no uploads or data leaving your device.
View in tree format
Your data is displayed as an expandable tree.
Copy or download
Copy the result or download it as a file.
WHY USE THIS TOOL
Why developers use this JSON viewer and formatter
JSON can be difficult to read when it is minified or deeply nested. This viewer helps you quickly understand structure and inspect data without scanning raw text.
Visualize nested hierarchies without losing context
Expand objects and arrays to inspect keys and values in a structured tree.
Pretty-print minified code for faster debugging
Copy or download formatted JSON when you need a clean, shareable version.
Open JSON instantly without installing tools
Paste your data and view it immediately in your browser.
Copy JSON paths and structured output
Click tree nodes to copy JSON paths, then export formatted output for debugging, sharing, or documentation.
PRIVACY
Secure client-side JSON viewing for sensitive data
Your JSON is processed entirely in your browser. No data is uploaded, stored, or transmitted.
Data stays on your device
All parsing and rendering happen locally in your browser session.
No uploads or storage
Your input and output are never sent to a server or saved remotely.
No setup required
Use the viewer instantly with no backend processing or account needed.
FAQ
JSON viewer troubleshooting FAQs
Paste or upload your JSON into the viewer. The tool automatically formats your data and displays it as a structured tree so you can quickly scan keys, values, and nested objects.
The viewer converts your JSON into a collapsible tree. Click on objects or arrays to expand and inspect nested data without scrolling through raw text.
If nothing appears, your JSON is likely invalid. Common issues include missing commas, extra or missing brackets, or incorrect quotes. Fix the error and try again. This tool only displays valid JSON.
This viewer requires valid JSON to render results. If your data is not working, check for syntax errors like missing commas or unmatched brackets. For detailed error messages, use a JSON validator tool.
Uploads and pasted JSON over 10 MB are not loaded, so your tab does not freeze. Under that limit, everything runs in your browser; huge nested trees may still feel slower on older devices.
A JSON tree view organizes data into a hierarchical structure. Instead of reading raw text, you can expand and collapse sections to quickly understand relationships between objects and arrays.
Yes. All processing happens in your browser. Your JSON is not uploaded, stored, or sent to any server.
No. This is a browser-based tool. You can paste or upload JSON and view it instantly without installing software or creating an account.