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Site Info - Usps.comOverview of web technologies used by Usps.com. Website Background Welcome | USPSWelcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need for sending mail and shipping packages. Description on Homepage Top 1k among all websites Popularity rank Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert. Drupal 8 Oracle CX Commerce (formerly Oracle Commerce Platform and ATG Web Commerce) is a Java-based e-commerce platform by Oracle.
PHP is a scripting language for creating websites. PHP Java is a general-purpose language originally developed by Sun Microsystems. Java Microsoft's Active Server Pages technology on the .NET framework.
JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages. WebAssembly is a portable binary-code format for executable programs, 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. jQuery 3.7.1 Bootstrap is an open source HTML, CSS, and JavaScript framework. Popper is an open source JavaScript library for tooltips and popovers. RequireJS is a JavaScript file and module loader. RequireJS Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the visitors browser. Modernizr The Dojo Toolkit is a modular JavaScript library maintained by the Dojo Foundation. Dojo Bootstrap is an open source HTML, CSS, and JavaScript framework. Akamai provides a content delivery network. This includes the former brands Instart Logic and StackPath. Akamai Akamai provides a content delivery network.
DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert. Google Hosted Libraries (formerly called Google Libraries API) is a content distribution network for the most popular, open-source JavaScript libraries, provided by Google.
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. Google Analytics Meta Pixel (formerly Facebook Pixel) is an analytics tool to track actions on websites.
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.
The Pinterest Tag tracks website visitors after seeing a Pinterest ad.
The Google Advertising network consists of AdSense, DoubleClick and other services. Google Ads The Google Tag Manager is a Google service to support webmasters to manage tags on their websites. 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. Session Cookies Persistent cookies with an expiration time of up to 1 day. Persistent cookies with an expiration time between 1 month and 1 year. 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. A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache. Strong ETag 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. 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. HTTP Strict Transport Security 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/. Persistent cookies with an expiration time of more than 10 years.
HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.
Non-secure cookies may be used via an unencrypted connections, which may be a security threat.
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/X Cards enable automatic attachment of photos, videos and media elements to tweets. JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON. HTML5 is the fifth revision of the HTML standard. Transitional version of HTML. HTML Transitional 4.0 Windows-1252 is an 8-bit character encoding, designed to cover West European alphabets. 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. 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.
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