🔍 JSON Diff (Structural Compare)

Compare two JSON documents structurally and show additions, deletions, and changes with JSON Pointer paths (/path/to/field). Supports key sort, array order ignore, and type-change detection.

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・All processing happens entirely in your browser
・Your input data is never sent to any server

View Mode

Key Order

Array Order

Type Change

Left (Old)

Right (New)

Diff Result

🔗 Related Tools

📖 How to Use

1

Paste two JSON documents

Paste the old version on the left and the new one on the right. The Sample buttons load example data.
2

Adjust options

Choose the view (tree / flat / unified), whether to ignore key order or array order, and how strict type comparison should be.
3

Review the diff

Added (+), removed (-), and changed (~) entries appear color-coded with JSON Pointer paths. The summary shows totals at a glance.

❓ FAQ

What is JSON Pointer?

A slash-separated path notation defined in RFC 6901 for pointing at any value inside a JSON document. For example, /users/0/email points to the email field of the first array element.

What changes when array order is ignored?

Arrays are treated as sets — equal contents in different orders are considered unchanged. Useful when only the contents matter, not the position.

How are string "1" and number 1 compared?

In Strict mode they are reported as a change; in Loose mode they are treated as equal by value. Switch to Loose to tolerate type drift in API responses.

🐛 Found a bug or issue with this tool?

Free to use, no signup. Even just the steps to reproduce are helpful. Reports go directly to the operator and help us fix issues.