HTTP response header
The Upgrade header field is an HTTP header field introduced in HTTP/1.1. In the exchange the client begins by making a cleartext request which is later upgraded to a newer HTTP protocol version or switched to a different protocol.
Header usage statisticsUpgrade response header information and usage statistics.
|Websites using header Upgrade||7,689,226|
|Percentage of websites that use Upgrade header||8.62%|
|Total discovered header values||139|
|Header uses directives||No|
|Header values are unique or random||No|
|Most popular in the country|| United States|