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JSON Diff

Compare two JSON documents by structure rather than as text, so reordered keys and different formatting never register as changes. Every difference is reported at the exact path it occurs, grouped into added, removed, and changed, with unchanged values available on request.

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Related tools

JSON FormatterPretty-print and validate JSON with configurable indentation.JSON ValidatorCheck whether JSON is valid, with a precise error location.Text Diff CheckerCompare two pieces of text, side by side or as a unified diff.

Features

  • Structural comparison — key order and formatting are ignored
  • Added, removed, and changed values reported by path
  • Unchanged structure shown on request
  • Format either side in place, with invalid JSON flagged per editor

How to use

  1. Paste the original JSON on the left and the new JSON on the right.
  2. Differences appear automatically as you type.
  3. Toggle “Show unchanged” to see the full structure.

FAQ

How is this different from a text diff?
A text diff compares lines, so reformatting a file or reordering keys shows up as a change. This compares the parsed structures, so only real differences in data are reported — at the path where they occur, not the line.
Does key order matter?
No. JSON objects are unordered by definition, so two objects with the same keys in different orders are treated as identical.
How are arrays compared?
By position. Index 0 is compared to index 0, and so on — so inserting an item at the start of an array reports every subsequent position as changed, which is what actually happened positionally.
Is my JSON uploaded anywhere?
No. Both documents are parsed and compared entirely in your browser; nothing is sent to a server.