DevKits

Interactive visualizer

JSON Visualizer — See the Structure of Any JSON Document

Paste any JSON document to see it laid out as a collapsible tree with type badges, live structure statistics (max depth, key count, node count), and copyable JSONPath for every node. All processing runs locally in your browser — nothing is uploaded.

Last updated:

420 chars · 11 lines
Root type
object
Max depth
5
Total keys
18
Total nodes
22

Type breakdown

string×10object×6number×5array×1

Interactive tree

{
"store":{
"book":[
0:{ 4 keys }
1:{ 4 keys }
2:{ 4 keys }
]
"bicycle":{
"color":"red"
"price":19.95
}
}
"expensive":10
}

What the tree shows

Every row is a node in the JSON document. Colors encode the value type: strings, numbers, booleans, and null each get their own hue, and objects / arrays show a collapsed preview like { 3 keys } or [ 12 items ]. Click the chevron to expand a subtree, hover a row to copy its JSON, or use the top filter box to jump to keys anywhere in the tree.

Structure statistics

  • ▸Root type — object, array, or a top-level primitive (RFC 8259 allows any JSON value as the root).
  • ▸Max depth — the deepest level of nesting; a good early warning for parsers with recursion limits.
  • ▸Total keys — count of object property names across the whole document.
  • ▸Total nodes — every atomic value plus every container; useful for gauging serialized size before profiling.
  • ▸Type breakdown — how many strings vs. numbers vs. booleans vs. nulls the payload contains.

When to reach for a visualizer instead of a formatter

  • ▸You need to understand the shape of a payload you've never seen before — the tree collapses noise so the structure is obvious in seconds.
  • ▸You want to teach or document a JSON schema — screenshots of the tree communicate structure faster than raw text.
  • ▸You're chasing a bug tied to a specific path — copy the JSONPath from any row to paste into jq, JSONPath tester, or your test fixtures.
  • ▸You're inspecting a very large document — the tree's per-array truncation keeps rendering responsive where a raw formatter would freeze.

Privacy

  • ▸Every visualization runs entirely as client-side JavaScript.
  • ▸Your JSON is never uploaded, logged, or stored on our servers.
  • ▸You can use this on air-gapped machines by saving the page and re-opening it locally.

Frequently Asked Questions

What is the difference between a JSON visualizer and a JSON formatter?

A formatter reflows raw text with consistent indentation. A visualizer parses the JSON into a live, interactive tree with type colors, collapsible subtrees, per-node paths, and structure stats. The formatter answers 'is this readable?'; the visualizer answers 'what is this document actually made of?'.

How large a JSON document can I visualize?

In practice, browsers render trees up to a few megabytes smoothly. Arrays longer than 200 items are truncated in the render (with a 'show more' control) so extremely large payloads still work without freezing the page.

Can I copy the JSONPath of a specific node?

Yes — hover any row and click the copy icon. It grabs the JSON representation of that subtree; for the dot-path to a leaf value, use our JSON Path Finder tool alongside this visualizer.

Which JSON dialect is accepted?

Strict RFC 8259 JSON. For JSON5 or JSONC (with comments, trailing commas, single quotes, unquoted keys), run the input through our JSON5 → JSON converter first, then paste the result here.

Is my JSON uploaded to a server?

No. Parsing, rendering, and every interaction happen entirely in your browser. Nothing is uploaded, logged, or persisted anywhere.

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