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JSON Viewer

Explore valid JSON as a collapsible tree with exact source values for large numbers.

Workspace⌁ Processed on your device

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Processed on your device

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How it works

Explore valid JSON as a collapsible tree with exact source values for large numbers. Enter your values or try the example. Run the action, check the result and copy or download it. Your input remains editable after an error.

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Example

{"team":{"members":["Ada","Lin"]}}
→ team → members → 0: "Ada", 1: "Lin"
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When to use this tool

Find a nested property in a long API response pasted into the editor.

Supported formats & limits

JSON: up to 5 MiB, strict syntax, original numeric tokens preserved. URL decoding rejects invalid escapes and UTF-8. Generated UUIDs are version 4. Inputs are never executed or visited.

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Good to know

What happens when I change the input?

An edited input needs a new result. Run the action again; previous download links are removed so you cannot mistake an old output for the current one.

Are my files uploaded?

Your files and pasted content are processed in temporary browser memory and are not uploaded for processing. App preferences store only tool IDs, language and theme. There are no accounts, ads or automatic error reports. Closing the page discards your workspace; download results you want to keep. Production pages use Google Analytics for visit statistics; see the Privacy page for details.