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🗺️ JSON Shape Flattener

Flatten nested JSON objects, rebuild dot-path maps, and merge payloads with conflict tracking.

JSON Shape Flattener & Merger

Convert deeply nested JSON into dot/bracket paths, rebuild nested shapes from flat maps, and merge payloads with conflict reporting. Ideal for working with configuration files or transforming API responses for spreadsheets.

Flatten JSON

Create dot/bracket path maps from nested objects.

10 pathsMax depth 4

Flattened output

{
  "user.id": 12,
  "user.name.first": "Ada",
  "user.name.last": "Lovelace",
  "user.roles[0]": "analyst",
  "user.roles[1]": "mathematician",
  "user.preferences.theme": "dark",
  "user.preferences.notifications.email": true,
  "user.preferences.notifications.sms": false,
  "meta.version": 4,
  "meta.updatedAt": "2024-05-01T12:00:00Z"
}

Use $ to represent the root when flattening primitives or empty objects.

Unflatten JSON

Rebuild nested structures from path maps.

14 keys6 objects · 1 arrays

Nested output

{
  "user": {
    "id": 12,
    "name": {
      "first": "Ada",
      "last": "Lovelace"
    },
    "roles": [
      "analyst",
      "mathematician"
    ],
    "preferences": {
      "theme": "dark",
      "notifications": {
        "email": true,
        "sms": false
      }
    }
  },
  "meta": {
    "version": 4,
    "updatedAt": "2024-05-01T12:00:00Z"
  }
}

Merge JSON Objects

Deep merge two JSON documents with conflict insights.

Left JSON

Right JSON

Conflict resolutionArray strategy

12 keys5 objects · 1 arrays

{
  "user": {
    "id": 12,
    "name": "Ada Lovelace",
    "tags": [
      "algebra",
      "analysis",
      "logic"
    ],
    "preferences": {
      "theme": "dark",
      "notifications": {
        "email": true,
        "sms": false
      },
      "language": "en-GB"
    }
  },
  "meta": {
    "syncedAt": "2024-05-01T12:30:00Z"
  }
}

2 conflicts

$.user.nameright
Value overwritten
Left
```
"Ada"
```
Right
```
"Ada Lovelace"
```
$.user.tagsconcat
Arrays concatenated
Left
```
[
  "algebra"
]
```
Right
```
[
  "analysis",
  "logic"
]
```

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