Document Encoding

UTF-8UTF-8

UTF-8 Usage Statistics · Download List of All Websites using UTF-8

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

Document Standards

Meta RobotMeta Robot

Meta Robot Usage Statistics · Download List of All Websites using Meta Robot

This page contains a meta robots tag which tells search engines and robots to index or not index the page.

Meta Tags

Content Security PolicyContent Security Policy

Content Security Policy Usage Statistics · Download List of All Websites using Content Security Policy

Content Security Policy is a computer security concept, to prevent cross-site scripting XSS attacks.

Report URIReport URI

Report URI Usage Statistics · Download List of All Websites using Report URI

Report-uri directive instructs the user agent to report attempts to violate the Content Security Policy.

X-Frame-OptionsX-Frame-Options

X-Frame-Options Usage Statistics · Download List of All Websites using X-Frame-Options

The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a frame or iframe. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

Browser Specific

X-XSS-ProtectionX-XSS-Protection

X-XSS-Protection Usage Statistics · Download List of All Websites using X-XSS-Protection

X-XSS-Protection is a HTTP header set by Internet Explorer 8+. This header lets domains toggle on and off the "XSS Filter" of IE8, which prevents some categories of XSS attacks.