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Site Info - Youtube.com

Overview of web technologies used by Youtube.com.

Website Background

YouTube

Description on Homepage

15 February 2005

Online since

Number 2 of all websites according to Alexa

Popularity rank

CountryVisitorsCountry Rank
United States16.1%2
India8.1%3
Japan4.6%3

Main visitors locations

JavaScript is a lightweight, object-oriented, cross-platform scripting language, mainly used within web pages.

JavaScript

HTML5 is the fifth revision of the HTML standard.

HTML5

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

UTF-8

PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.

PNG

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

JPEG

Scalable Vector Graphics (SVG) is an XML-based vector image format.

SVG

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Embedded CSS

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Inline CSS

Session cookies are temporary cookies, which are deleted when the user closes the browser.

Session Cookies

Persistent cookies with an expiration time of up to 1 day.

Cookies expiring in hours

Persistent cookies with an expiration time between 1 month and 1 year.

Cookies expiring in months

Persistent cookies with an expiration time of more than 10 years.

Cookies expiring in decades

HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.

HttpOnly Cookies

Non-HttpOnly cookies are used in the HTTP protocol and also in client side scripts, which may be a security threat.

Non-HttpOnly Cookies

Non-secure cookies may be used via an unencrypted connections, which may be a security threat.

Non-Secure Cookies

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.

IPv6

HTTP/2 is the second major version of the HTTP network protocol.

HTTP/2

HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.

HTTP Strict Transport Security

QUIC (Quick UDP Internet Connections) is an experimental network protocol, originally designed by Google and submitted to IETF standardization.

QUIC

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

Default subdomain www

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Default protocol https

The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.

Open Graph

Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.

Twitter Cards

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Generic RDFa

GlobalSign is an IT security service provider, also operating as SSL certificate authority.

GlobalSign

The Google Advertising network consists of AdSense, DoubleClick and other services.

Google Ads

Google provides various services to run on its servers.

Google

KT Corporation (formerly Korea Telecom and Hanguk Tongshins) is a South Korean telecommunication operator, also offering web hosting services.

KT Corporation
(used until recently)

CenturyLink is a multinational communications company headquartered in USA. This includes its subsidiaries CenturyTel, Savvis, Qwest, Embarq and the former brand Level 3.

CenturyLink
(used until recently)
hosting info based on data from ipinfo.io, see details

Commercial entities

.com

United States
Republic of Korea (South Korea)
(used until recently)
New Zealand
(used until recently)

English
Russian
German
Spanish
French
Japanese
Portuguese
Italian
Polish
Chinese
Dutch, Flemish
Czech
Korean
Swedish
Hindi

 

 

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