HSTS - Browser HTTPS Only
Download List of All Websites using HSTS - Browser HTTPS Only
The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP for 15552000 seconds
favicon.ico
Download List of All Websites using favicon.ico
A favicon, also known as a shortcut icon, website icon, tab icon, URL icon, or bookmark icon, is a file containing one or more small icons, associated with a particular website or web page.
X-Cache HTTP Header
Download List of All Websites using X-Cache HTTP Header
The resource was not in the website cache, and was pulled from the origin server like Varnish servers.
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schema.org micro-markup
Download List of All Websites using schema.org micro-markup
Schema.org is a collaborative, community activity with a mission to create, maintain, and promote schemas for structured data on the Internet, on web pages, in email messages, and beyond.
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Block Content Sniffing
Download List of All Websites using Block Content Sniffing
The X-Content-Type-Options response HTTP header is a marker used by the server to indicate that the MIME types advertised in the Content-Type headers should not be changed and be followed. This allows to opt-out of MIME type sniffing, or, in other words, it is a way to say that the webmasters knew what they were doing.
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