UtilHero

JSON Visualizer

Turn JSON into an interactive node graph — pan, zoom, and explore nested data.

"name":"UtilHero"
"version":2
"active":true
"tags":
"author":
"stats":
0:"json"
1:"graph"
2:"viewer"
"name":"Ada"
"email":"ada@example.com"
"stars":1280
"forks":42
"issues":null

About JSON Visualizer

A JSON visualizer turns raw JSON into a node graph so you can see how objects and arrays nest. Paste JSON and it lays out a left-to-right tree you can pan and zoom, with each object as a node and each nested value as a connected child. It runs fully in your browser — nothing is uploaded.

Frequently asked questions

How is this different from a JSON formatter?
A formatter shows indented text; a visualizer draws the structure as a graph of connected nodes, which makes deeply nested data far easier to follow.
Can it handle large JSON files?
Yes, up to a cap — very large documents are truncated to keep the graph responsive. For pure formatting of huge files, use the JSON Formatter instead.
Is my data private?
Completely. The graph is built in your browser; your JSON is never sent to a server.

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