Programming Language Tools

JS Object Viewer

Paste a JavaScript object literal or JSON and view it as an interactive, collapsible tree - without executing any code.

Paste a JavaScript object literal or JSON below - this tool parses it safely (never executes it) and displays it as a collapsible tree.

JavaScript Object / JSON

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This accepts both strict JSON and common JS object literal syntax (unquoted keys, single quotes) - your input is only ever parsed as data, never executed.

What Does This Tool Do?

It parses an object literal or JSON string and renders it as a navigable, collapsible tree - making it easier to explore deeply nested structures than scanning raw, unformatted text.

Why Use This Tool?

A deeply nested API response or configuration object is hard to read as flat text - a collapsible tree view lets you expand only the parts you care about.

How to Use It

Paste a JavaScript object literal or JSON.
Click View.
Click any object/array node to expand or collapse it.

Important Notes

This tool parses your input as data only - it never uses eval() or executes any part of your input as executable code, so it's safe even for object literals containing what looks like function-like syntax (which is simply rejected as invalid data).

Frequently Asked Questions

No. It is parsed as data, not run, so it is safe to paste object literals from unknown sources.

Yes, common object-literal syntax such as unquoted keys and single quotes can be viewed. Functions and expressions that need to run are not evaluated.

Collapsible nodes make large, deeply nested objects easy to explore without scrolling through thousands of lines.