SSE Event Stream Parser & Server-Sent Events Viewer

Decode pasted Server-Sent Events frames so developers can inspect event names, IDs, retry values, comments, multi-line data, and embedded JSON without a live endpoint.

Runs locally in your browser
This viewer parses pasted text only. It does not connect to an endpoint or send stream data anywhere.
SSE stream textPaste text/event-stream frames separated by blank lines

Inspect protocol frames without opening a connection

Paste a captured text/event-stream response to debug field folding and event dispatch. Authentication, reconnect behavior, HTTP caching and connection health still belong in your client and server tests.

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