Text & Data
SSE Data Viewer
Paste raw Server-Sent Events and inspect each event with formatted JSON data.
Stream JSON array
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Frequently Asked Questions
Does this tool connect to my SSE endpoint?
No. It parses pasted text/event-stream content locally in your browser and does not make network requests.
Why does a data field sometimes render as text?
Each event data payload is parsed as JSON when possible. Valid JSON renders as a collapsible tree; non-JSON payloads stay as raw text.
Are multiline data fields supported?
Yes. Consecutive data lines are joined with newlines following the SSE format, then parsed as one complete JSON document when possible.