Local developer utility
JSON Diff Comparator
Compare two JSON or JSON5-style documents and see structural changes clearly. Your input stays in your browser while you work.
Relaxed JSON5-style syntax is accepted, including unquoted keys such as {a:1,"b":"c"}, trailing commas, and comments.
JSON Diff🔒 Processed locally
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How to use this tool
Paste your input into the editor, choose an action, and copy the result. Processing happens locally in your browser, so tokens, API responses, and configuration values are not uploaded automatically.
Use the universal workspace on the homepage when you are unsure which utility fits your input.