File viewer
JSON Viewer
Paste or open a JSON file to validate it, inspect the tree, format it, minify it, and copy clean output locally in your browser.
Runs Locally
This tool runs in your browser. Files never leave your device.
Drag and drop a .json file here, or paste JSON text below.
Drop a JSON file anywhere inside this card to load it locally.
Tree view
Click objects to collapse"name": "FreeProTool"
"private": true
What this tool does
View, format, and inspect JSON files directly in your browser. Quickly validate structure and explore nested data.
How it works
Paste JSON or upload a file. The tool parses the document and presents a readable formatted view.
When to use JSON Viewer
API development
Data inspection
Debugging JSON files
Reviewing exports