Developer Utilities · Free tool
JSON Visualizer
Interactive tree view of any JSON document. Click to expand/collapse nodes. Useful for exploring API responses.
Updated May 2026
Tree
name: "Free Tool Arena"
tools: 720
active: true
0: "money"
1: "dev"
2: "health"
metrics: null
Click any object/array node to collapse or expand. Default expansion is 2 levels deep — tweak by clicking. For pure validation with line/column errors, see our JSON Validator.
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What it does
Interactive tree view of any JSON document. Click any object/array node to collapse or expand. Useful for exploring large API responses or config files.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/json-visualizer" width="100%" height="720" frameborder="0" loading="lazy" title="JSON Visualizer" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Paste your JSON.
- Browse the tree on the right.
- Click ▼/▶ on objects/arrays to collapse or expand.
Frequently asked questions
- How big can the JSON be?
- Several MB are fine. The tree renders only the visible levels (default expansion 2 levels), so deep collapsed trees stay snappy. For multi-GB JSON, you need a server-side processor.
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