fiokit.

JSON Tree Viewer

Explore JSON objects and arrays in an expandable tree, validate structure and copy formatted JSON.

Hover over or focus a field for help. Press Escape to close.

Up to 200,000 characters. Processed locally.
0 UTF-16 units
0Words
0Characters
0Without spaces
0Lines

How it works

Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.

A practical example

JSON

{"name":"Anna","scores":[1,2]}

Frequently asked questions

Is my input sent to a server?

No. Your content is processed in this browser. It is never sent to the server or saved.

What should I know about JSON Tree Viewer?

The tree displays up to 500 nodes; formatted output preserves the complete accepted input. Maximum nesting depth: 40.