reCAPTCHA

reCAPTCHA Usage Statistics · Download List of All Websites using reCAPTCHA

Anti-bot CAPTCHA widget from Google.

CAPTCHA

Viewport Meta

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

This page uses the viewport meta tag which means the content may be optimized for mobile content.

IPhone / Mobile Compatible

IPhone / Mobile Compatible Usage Statistics · Download List of All Websites using IPhone / Mobile Compatible

The website contains code that allows the page to support IPhone / Mobile Content.

QUIC

QUIC Usage Statistics · Download List of All Websites using QUIC

Quick UDP Internet Connections, pronounced quick is a transport layer network protocol developed by Google.

LiteSpeed

LiteSpeed Usage Statistics · Download List of All Websites using LiteSpeed

LiteSpeed web server is a high performance, highly scalable Apache interchangeable web server.

HTML5 DocType

HTML5 DocType Usage Statistics

The DOCTYPE is a required preamble for HTML5 websites.

X-UA-Compatible

X-UA-Compatible Usage Statistics

Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.

Javascript

Javascript Usage Statistics

JavaScript is a scripting language most often used for client-side web development.

X-Frame-Options

X-Frame-Options Usage Statistics

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.