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Site Info - Quizlet.com
Overview of web technologies used by Quizlet.com.
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Number 218 of all websites according to Alexa
Main visitors locations
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.
Scalable Vector Graphics (SVG) is an XML-based vector image format.
External Cascading Style Sheets define style rules in a separate CSS file.
Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.
Persistent cookies with an expiration time of up to 1 day.
HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.
Non-HttpOnly cookies are used in the HTTP protocol and also in client side scripts, which may be a security threat.
Secure cookies are used only via an encrypted connections, which may increase security.
Gzip (GNU zip) is a file compression algorithm.
HTTP/2 is the second major version of the HTTP network protocol.
HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.
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.
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.
DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.
Quantcast provides visitor statistics of web sites.
Full Circle Studies collects information about general website visitation patterns as part of the ComScore market research.
The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.
Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.
CloudFlare provides a content delivery network.
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