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Site Info - Britannica.com
Overview of web technologies used by Britannica.com.
Encyclopedia Britannica | Britannica.comExplore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
Description on Homepage
14 June 1995
Number 1,047 of all websites according to Alexa
Main visitors locations
Java is a general-purpose language originally developed by Sun Microsystems.
HTML5 is the fifth revision of the HTML standard.
UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.
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.
JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.
Scalable Vector Graphics (SVG) is an XML-based vector image format.
GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.
External Cascading Style Sheets define style rules in a separate CSS file.
Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.
Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.
Session cookies are temporary cookies, which are deleted when the user closes the browser.
Persistent cookies with an expiration time between 1 and 10 years.
Non-HttpOnly cookies are used in the HTTP protocol and also in client side scripts, which may be a security threat.
Non-secure cookies may be used via an unencrypted connections, which may be a security threat.
Gzip (GNU zip) is a file compression algorithm.
The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.
The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.
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.
Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.
Microdata is a specification to integrate metadata within existing content on web pages.
Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.
Sectigo (formerly Comodo CA) is a US-based SSL certificate authority.
Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google.
Facebook Pixel is an analytics tool to track actions on websites.
Lotame Crowd Control is an analytics package to measure social media behavior for publishers and advertisers.
The Google Advertising network consists of AdSense, DoubleClick and other services.
Amazon Associates is the affiliate program of Amazon.
OpenX (previously called phpAds, phpAdsNew, MaxMediaManager and Openads) is an open source ad management system and ad marketplace.
The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.
The Apache HTTP Server is a popular open source web server by the Apache Software Foundation.
Unix is a range of operating systems originally developed at Bell Labs. This contains Unix and Unix-like systems, such as Linux.
Cogent Communications is a multinational internet service provider based in the USA.
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