Technologies in use by squareup.com

Google Analytics is a service offered by Google that generates detailed statistics about a website's traffic and traffic sources and measures conversions and sales. Google Analytics can track visitors from all referrers, including search engines and social networks, direct visits and referring sites. It also displays advertisin...

Google+ platform websites integration using the Google+ platform tag.

Website using Instagram integrations or links.

Let visitors recommend your content on Google Search and share it on Google+.

Website with links to Instagram profiles or pictures

Websites embedding Google maps.

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser and allows you to target specific browser functionality in your stylesheet.

jQuery: The Write Less, Do More, JavaScript Library.

Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.

A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.

iOS Safari instructions for mobile web apps

This site uses the viewport meta tag which means the content may be optimized for mobile content.

Google Apps is a cloud-based productivity suite that helps you and your team connect and get work done from anywhere on any device. It's simple to setup, use and manage, allowing you to work smarter and focus on what really matters.

Ruby on Rails is an open-source web framework that is optimized for programmer happiness and sustainable productivity. It lets you write beautiful code by favoring convention over configuration.

DNS Made Easy offers enterprise managed DNS and geographical load balancing services on a global IP Anycast DNS network with a 100% uptime guarantee.

The DOCTYPE is a required preamble for HTML5 websites.

Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.

Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.

Websites using https protocol.

Meta Keywords are a specific type of meta tag that appear in the HTML code of a Web page and help tell search engines what the topic of the page is.

Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.

The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".

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

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

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