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Universe is a hosted website builder.

JavaScript is a lightweight, object-oriented, cross-platform scripting language.

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

Cloudflare Server is a web server developed by Cloudflare.

Node.js is a server-side JavaScript environment for writing network programs such as web servers, originally developed by Ryan Dahl.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European web hosting company owned by United Internet.

Universe is a hosted website builder.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European web hosting company owned by United Internet.

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

Cloudflare provides a content delivery network.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European internet services company owned by United Internet.

DNSimple is a domain name services and DNS hosting provider.

IONOS (formerly 1&1 IONOS and 1&1 Internet) is a European internet services company owned by United Internet.

OpenSRS provides email services and other internet services, owned by Tucows.

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

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

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.

HTTP/2 is the second major version of the HTTP network protocol.

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

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

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

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

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 Cards enable automatic attachment of photos, videos and media elements to Tweets.

HTML5 is the fifth revision of the HTML standard.

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

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

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