Encrypted Web (or HTTPS Everywhere) uses a list of rules to determine if a website supports HTTPS and redirects your browser to the secure version of the page, if it exists. UIR Header tells the website you're visiting that you want the secure version and lets the site you're visiting choose how to respond.
Alexander
Mar 14, 12:14 PM
Could you give an example where it could be useful?
The website has to support the Upgrade-Insecure-Requests header. Also, how they support it is up to them. Some may only change the parts they think should be secure, or make things like images and scripts secure. It's up to each website to decide how to handle the header.