NEL

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The HTTP NEL response header is used to configure network request logging.

Header type Response header
Forbidden header name No

Syntax

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

Specifications

Specification
Network Error Logging
# nel-response-header

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
NEL
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.

See also