Referer HTTP header
E856186
The Referer HTTP header is a field in HTTP requests that indicates the URL of the webpage that linked to the resource being requested, commonly used for analytics, logging, and access control.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | HTTP header field ⓘ |
| alsoKnownAs | Referrer header ⓘ |
| canBeModifiedBy | client-side scripts in some contexts ⓘ |
| canBeSuppressedBy |
browser privacy settings
ⓘ
privacy extensions ⓘ |
| category | request context header ⓘ |
| controlledBy | web browser ⓘ |
| defaultBehavior | browser sends full URL of referring page unless restricted ⓘ |
| definedIn |
HTTP/1.0 specification
NERFINISHED
ⓘ
RFC 1945 NERFINISHED ⓘ RFC 2616 NERFINISHED ⓘ RFC 7231 NERFINISHED ⓘ RFC 9110 NERFINISHED ⓘ |
| direction | request header ⓘ |
| exampleValue | https://example.com/page.html ⓘ |
| governedBy | Referrer-Policy specification NERFINISHED ⓘ |
| hasMisspellingOrigin | Referrer ⓘ |
| hasSpelling | Referer ⓘ |
| hasStatus | standard HTTP header ⓘ |
| headerName | Referer ⓘ |
| indicates |
URL of the resource from which the request originated
ⓘ
address of previous web page ⓘ |
| introducedFor | allowing servers to identify referring documents ⓘ |
| mayBeOmittedWhen |
navigating from HTTPS to HTTP depending on policy
ⓘ
request is triggered by some privacy modes ⓘ user enters URL directly ⓘ |
| privacyImpact |
can leak browsing history
ⓘ
can leak sensitive URL parameters ⓘ |
| relatedHeader | Referrer-Policy HTTP header NERFINISHED ⓘ |
| securityConsideration |
can be spoofed by clients
ⓘ
should not be relied on for strong authentication ⓘ |
| sentIn | HTTP request ⓘ |
| standardizedBy |
Internet Engineering Task Force
ⓘ
surface form:
IETF
|
| usedBy |
CDNs
ⓘ
ad networks ⓘ analytics platforms ⓘ web servers ⓘ |
| usedFor |
CSRF protection heuristics
ⓘ
access control ⓘ clickstream analysis ⓘ logging ⓘ traffic source analysis ⓘ web analytics ⓘ |
| usedInProtocol | HTTP NERFINISHED ⓘ |
| usedInProtocolVersion |
HTTP/1.0
ⓘ
HTTP/1.1 ⓘ HTTP/2 ⓘ HTTP/3 NERFINISHED ⓘ |
| valueType |
URI
ⓘ
absolute URL ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.