JSON Viewer

View JSON as an expandable tree

This JSON viewer parses a document and presents objects and arrays as a structured tree. Expand or collapse nested values to inspect large API responses, configuration files, logs, and other JSON without reading every level at once.

The viewer is for navigation and inspection. It does not edit the source, validate against a JSON Schema, send API requests, or change the underlying values.

How to inspect JSON

1. Paste a complete JSON document into the input editor.
2. Click View.
3. Expand objects and arrays to follow the path to a value.
4. Return to the source when you need to correct a syntax error.

The tree distinguishes objects, arrays, strings, numbers, Boolean values, and null. Property order is displayed for convenience but should not be treated as semantic ordering required by every JSON consumer.

Viewer, formatter, and validator

A viewer focuses on navigating nested structure. A formatter produces indented JSON text, while a validator checks syntax without creating a tree. All must first parse valid JSON according to the grammar defined by RFC 8259.

Standard JSON requires double-quoted property names and strings. Comments, trailing commas, functions, undefined, NaN, and other JavaScript-specific syntax are not valid JSON values.

JSON viewer FAQ

Why does the viewer show a parsing error?

The source is not valid JSON. Check quotes, commas, brackets, braces, escape sequences, and unsupported JavaScript syntax with the JSON Validator.

Does expanding the tree change my data?

No. Expansion only changes which nodes are visible in the viewer. It does not alter the input document.

How do I copy readable JSON text?

Use the JSON Formatter to generate indented text. Use the JSON Minifier when a compact serialized form is needed.