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

Fastly is a content delivery network.

Google provides various services to run on its servers.

Gmail is the email service provided by Google.

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

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

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.

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.

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/.

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.

Microdata is a specification to integrate metadata within existing content on web pages.

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.

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.

WebP is an image format that provides lossless and lossy compression, developed by Google.

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