JSON Diff

Deep Diff

Compare two JSON objects side-by-side. Free client-side json diff tool highlighting added, removed, and modified values recursively.

Runs 100% in your browser - zero server calls
Updated 2026-06-29

How to use the JSON Diff / Compare tool

This tool operates as a versatile json diff and compare json online. Paste your original JSON into the Left panel and your modified JSON into the Right panel, then click Compare. The diff engine walks both documents recursively and produces a color-coded tree showing every difference.

What types of changes are detected with COMPARE JSON ONLINE

The tool detects three types of changes: added keys (present only in Right), removed keys (present only in Left), and changed values (key exists in both, but values differ). Nested objects and arrays are diffed recursively.

Is my JSON data private?

Yes - 100%. All comparison logic runs inside your browser using JavaScript. No JSON is transmitted to any server. You can safely diff configuration files, API responses, and sensitive documents.

Frequently Asked Questions

How does this json diff compare to standard text diff tools?

A json diff parses both sides as JSON structures first, comparing keys and values recursively rather than just doing raw text comparison.

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