App — parse & diagnose JSON

Paste your JSON

Pasted content is parsed entirely in your browser. Nothing is sent to any server.

URL that should return JSON

Cloudflare limitation: a host behind Cloudflare cannot be reached from this Worker. If the fetch fails and your target uses Cloudflare, that is a platform restriction, not a result about your network.

The URL is fetched server-side (via the Worker) so the raw HTTP response can be inspected. The response body and metadata are returned for analysis.

Verdict

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HTTP response

Error details

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Show raw error

Parsed value