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

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

Bootstrap is an open source HTML, CSS, and JavaScript framework.

Popper is an open source JavaScript library for tooltips and popovers.

Bootstrap is an open source HTML, CSS, and JavaScript framework.

Animate is a CSS library focusing on animations.

Fastly is a content delivery network.

NS1 provides managed and private DNS services, owned by IBM.

Constellix provides DNS management services owned by DigiCert.

Gmail is the email service provided by Google.

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

The CDNJS is a content distribution network, hosting a large number of JavaScript libraries, provided by CloudFlare.

Google Hosted Libraries (formerly called Google Libraries API) is a content distribution network for the most popular, open-source JavaScript libraries, provided by Google.

jsDelivr is a service for hosting JavaScript files.

The jQuery CDN hosts copies of the jQuery library, provided by MaxCDN.

Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google. This includes the Ads conversion tracking and the Floodlight services.

Full Circle Studies collects information about general website visitation patterns as part of the ComScore market research.

Lotame Crowd Control is an analytics package to measure social media behavior for publishers and advertisers.

Twitter conversion tracking tracks the actions of website visitors coming from Twitter ads.

Facebook Pixel is an analytics tool to track actions on websites.

Hotjar is a website analytics and feedback application.

Mixpanel is a real-time web analytics service to track users behavior.

Microsoft UET (Universal Event Tracking) records what visitors do on a website after they click on an ad.

The LinkedIn Insight Tag helps to optimize LinkedIn campaigns.

Chartbeat is a real-time web analytics tool by Betaworks.

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

Amazon Associates is the affiliate program of Amazon.

Xandr is an advertising network owned by Microsoft, formerly by AT&T. This includes the former AppNexus brand.

OpenX (previously called phpAds, phpAdsNew, MaxMediaManager and Openads) is an open source ad management system and ad marketplace.

PubMatic is a marketing automation software provider.

Skimlinks is an advertising service, that inserts affiliate links into webpages.

PulsePoint (formerly Adsdaq and ContextWeb) is an advertising exchange service.

Blockthrough (formerly PageFair) detects ad-blocking visitors and shows non-intrusive ads.

AdRoll is an advertising network for retargeting and other advertising formats.

Index Exchange (formerly Casale Media) is an advertising network.

Media.net is an advertising network powering the Yahoo! Bing Network Contextual Ads program.

The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.

Facebook Social Plugins provide a way for Facebook users to share web pages with their friends.

A Twitter Button allows a Twitter user to post a tweet from the visited site.

LinkedIn Share Buttons enable visitors to to share website content with their LinkedIn network.

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.

Brotli is a lossless compression algorithm developed by Google.

A weak ETag is an HTTP header field for validation of cached web pages, that indicates a semantically equivalent page in the cache.

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

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.

JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON.

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

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.

HTML5 is the fifth revision of the HTML standard.

Transitional version of HTML.

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.

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

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

GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.

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