Viewport MetaViewport 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.

JavaScript Libraries and Functions

Intersection ObserverIntersection Observer

Intersection Observer Usage Statistics · Download List of All Websites using Intersection Observer

API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport.

Advertising

SeznamSeznam

Seznam Usage Statistics · Download List of All Websites using Seznam

Behavioral targeting ads from Czech Republic.

SSL Certificates

HSTSHSTS

HSTS Usage Statistics · Download List of All Websites using HSTS

Forces browsers to only communicate with the site using HTTPS.

Operating Systems and Servers
Syndication Techniques

RSSRSS

RSS Usage Statistics · Download List of All Websites using RSS

A family of web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts.

Document Encoding

UTF-8UTF-8

UTF-8 Usage Statistics

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

HTML5 DocTypeHTML5 DocType

HTML5 DocType Usage Statistics

The DOCTYPE is a required preamble for HTML5 websites.

JavascriptJavascript

Javascript Usage Statistics

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

Cascading Style SheetsCascading Style Sheets

Cascading Style Sheets Usage Statistics

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML

Open Graph ProtocolOpen Graph Protocol

Open Graph Protocol Usage Statistics

The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook

DNS PrefetchDNS Prefetch

DNS Prefetch Usage Statistics

Page contains links to disable or enable DNS prefetching of links in the page.

Windows 8 PinningWindows 8 Pinning

Windows 8 Pinning Usage Statistics

Windows 8 pinning functionality for websites.

OpenSearchOpenSearch

OpenSearch Usage Statistics

The OpenSearch description document format can be used to describe a search engine so that it can be used by search client applications.

Meta DescriptionMeta Description

Meta Description Usage Statistics

The description attribute provides a concise explanation of the page content.

Canonical Content TagCanonical Content Tag

Canonical Content Tag Usage Statistics

Public specification of a preferred URL for a page allows search engines to understand the original location for content.

WAI-ARIAWAI-ARIA

WAI-ARIA Usage Statistics

A way to make Web content and Web applications more accessible to people with disabilities. It especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies.

HTML 5 Specific TagsHTML 5 Specific Tags

HTML 5 Specific Tags Usage Statistics

This page contains tags that are specific to an HTML 5 implementation.

srcsetsrcset

srcset Usage Statistics

Adapting images for high-resolution and low-resolution displays.

WebPWebP

WebP Usage Statistics

WebP is a modern image format that provides superior lossless and lossy compression for images on the web.

Picture ElementPicture Element

Picture Element Usage Statistics

The picture element provides images for different devices and is part of the HTML 5.1 specification.

X-Frame-OptionsX-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.

Content Security PolicyContent Security Policy

Content Security Policy Usage Statistics

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

Strict Transport SecurityStrict Transport Security

Strict Transport Security Usage Statistics

The HTTP Strict-Transport-Security (HSTS) header instructs the browser to only use https.