JSON Merge

Deep-merge two or more JSON documents with conflict policy.

Free · No signup · Runs in your browser

Conflict policy

Arrays

Input — separate documents with "--- doc"199bytes·2docs

Merged JSON149bytes

{
  "host": "localhost",
  "port": 6543,
  "features": {
    "auth": true,
    "logging": true,
    "metrics": true
  },
  "tags": [
    "prod"
  ]
}

Merged 2 documents · arrays: replace · conflicts: right-wins

Runs entirely in your browser. Nothing is uploaded or stored.

Deep-merge two or more JSON documents with conflict policy.

Free · No signup · Runs in your browser

Conflict policy

Arrays

Input — separate documents with "--- doc"199bytes·2docs

Merged JSON149bytes

{
  "host": "localhost",
  "port": 6543,
  "features": {
    "auth": true,
    "logging": true,
    "metrics": true
  },
  "tags": [
    "prod"
  ]
}

Merged 2 documents · arrays: replace · conflicts: right-wins

Runs entirely in your browser. Nothing is uploaded or stored.