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

jQuery 3.3.1
72% of sites use a newer version

Web Servers

Uvicorn is a Python-based ASGI (Asynchronous Server Gateway Interface) server, which can be used as web server.

Uvicorn
used on inner pages

Caddy is an open-source web server implemented in Go.

~~Caddy~~
used until recently

Web Hosting Provider

B12 is a hosted website building service.

B12
hosting info partly based on data from ipinfo.io, see details

Data Center Provider

Amazon is a US-based e-commerce and cloud computing provider.

Amazon

DNS Server Provider

GoDaddy is a provider of internet services. This includes the former brand Media Temple.

GoDaddy

Email Server Provider

Gmail is the email service provided by Google.

Gmail

SSL Certificate Authority

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

Let’s Encrypt

JavaScript Content Delivery Network

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

jQuery CDN

Site Elements

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Embedded CSS

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Inline CSS

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol.

HTTP/3

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 use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Default protocol https

Structured Data Format

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.

Open Graph

Markup Language

HTML5 is the fifth revision of the HTML standard.

HTML5

Character Encoding

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

UTF-8

Image File Formats

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.

PNG

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

JPEG

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

Commercial entities