JSON Formatter

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← Full JSON Formatter Online - Format & Beautify JSON Free tool

Pretty Print Nested JSON File

Analytics events, GraphQL data nodes, and CMS exports can nest dozens of levels—flat minified lines hide structure you need to inspect.

Pretty printing re-indents each object and array so parent-child relationships are obvious when reviewing fixtures or test data.

Data engineers and iOS developers compare nested payloads from staging and production without external desktop formatters.

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Examples (copy-paste)

Nested user profile (minified)
{"user":{"id":9,"profile":{"name":"Rin","settings":{"theme":"dark","notifications":true}}}}
Expanded hierarchy
{
  "user": {
    "id": 9,
    "profile": {
      "name": "Rin",
      "settings": {
        "theme": "dark",
        "notifications": true
      }
    }
  }
}

FAQs

Is there a depth limit for pretty print nested json?
There is no artificial cap; extremely deep trees may be slow to render in the browser but remain valid JSON.
Does pretty printing flatten arrays of objects?
No. Each array element keeps its own indentation block so list items stay distinguishable.
Can I pretty print JSON with null and boolean fields?
Yes. null, true, and false literals format like strings and numbers within the nested structure.