Is the JSON Diff private?

Both JSON documents are compared locally. Nothing is sent to a server.

What can I use the JSON Diff for?

API response changes, Config reviews, Fixture updates are common uses. The tool runs in your browser so it is suitable for quick checks and sensitive snippets.

Does HappyFormatter store JSON Diff input?

No. HappyFormatter's utility tools process pasted input in the browser tab and do not store it on a server.

HappyFormatter Local code tools

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Private browser utility

JSON Diff

Compare two JSON documents in your browser and see added, removed, and changed paths without uploading either document.

What this tool is good for

Compare parsed JSON values by path instead of plain text.

Spot changed booleans, strings, numbers, arrays, and nested fields.

Get a concise text summary that is easy to paste into an issue.

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