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NEL header

files/en-us/web/http/reference/headers/nel/index.md

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{{SeeCompatTable}}

The HTTP NEL {{Glossary("response header")}} is used to configure network request logging.

<table class="properties"> <tbody> <tr> <th scope="row">Header type</th> <td>{{Glossary("Response header")}}</td> </tr> </tbody> </table>

Syntax

http
NEL: { "report_to": "name_of_reporting_group", "max_age": 12345, "include_subdomains": false, "success_fraction": 0.0, "failure_fraction": 1.0 }

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also