How is this different from the JSON Formatter?

The formatter outputs readable indented text; the viewer renders an interactive tree you can expand and collapse to explore structure.

What happens if my JSON is invalid?

You'll see a parse error instead of a tree — fix the syntax and it will render automatically.

Is there a size limit?

Very large JSON (tens of megabytes) may be slow to render since the whole tree is built in the browser.

JSON Viewer

Paste JSON and explore it as a collapsible tree. Expand or collapse any object or array to navigate large or deeply nested payloads.

Comment utiliser JSON Viewer

1
Paste your JSON data into the input area.
2
Explore the result as a collapsible tree.
3
Expand or collapse any object or array to navigate the data.

Fonctionnalités de JSON Viewer

Nested objects and arrays under two levels deep are auto-expanded for quick scanning.
Handles large, deeply nested payloads without freezing the page.
Runs entirely in your browser — nothing is uploaded.

Pourquoi choisir Tool King ?

Rapide

Pas d'attente ni d'inscription. La plupart des fichiers sont prêts en quelques secondes.

Privé

Les fichiers sont traités en mémoire puis supprimés immédiatement — jamais stockés ni partagés.

Gratuit

Chaque outil est gratuit, sans limite cachée sur l'essentiel.

Questions fréquentes

Guides associés

A quick guide to formatting and validating JSON

Turn minified or messy JSON into something readable — and catch syntax errors fast.

Lire le guide

Outils similaires

JSON Formatter

Format and beautify your JSON data instantly.

JSON Validator

Validate your JSON and find syntax errors.

JSON to CSV

Convert a JSON array of objects into a CSV file.

JSON to YAML

Convert JSON data into YAML format.

Base64 Encoder/Decoder

Encode or decode text and files using Base64.

URL Encode

Percent-encode text for safe use in a URL.

Rechercher un outil...