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Site Info - Usps.com
Overview of web technologies used by Usps.com.
Welcome | USPSWelcome to USPS.com. Find information on our most convenient and affordable shipping and mailing services. Use our quick tools to find locations, calculate prices, look up a ZIP Code, and get Track & Confirm info.
Description on Homepage
10 July 1997
Number 287 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.
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.
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.
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.
Gzip (GNU zip) is a file compression algorithm.
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.
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/.
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.
HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.
Secure cookies are used only via an encrypted connections, which may increase security.
Sectigo (formerly Comodo CA) is a US-based SSL certificate authority.
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.
The Google Advertising network consists of AdSense, DoubleClick and other services.
Amazon Associates is the affiliate program of Amazon.
AppNexus is an online advertising platform.
The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.
Akamai is a content delivery network.
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