Site Info - Heltec.org

WordPress is an open source blog publishing and content management system, based on PHP and MySQL.

Elementor is a WordPress-based website builder.

WooCommerce is an open source e-commerce platform based on WordPress.

Docusaurus is an open source static website generator based on Node.js.

Docutils is a Python-based open-source text processing system for generating documentation in HTML and other formats.

Sphinx is a Python-based tool for creating project documentation, based on Docutils.

PHP is a scripting language for creating websites.

Static websites don't use any server-side programming language for generating web pages, but deliver fixed content which is created manually or with an offline tool.

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

Underscore is a JavaScript library that provides functional programming support.

Cloudflare Server is a web server developed by Cloudflare.

Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.

Linux is a Unix-like open source operating system originally developed by Linus Torvalds.

Vercel (formerly Zeit) offers hosting for web applications and static websites.

Read the Docs provides a platform for creating and hosting technical documentation.

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

Cloudflare provides a content delivery network.

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.

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.

The Google Advertising network consists of AdSense, DoubleClick and other services.

The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.

Zstandard is a lossless data compression algorithm developed by Yann Collet at Facebook.

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.

Persistent cookies with an expiration time of up to 1 day.

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.

Gzip (GNU zip) is a file compression algorithm.

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.

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

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/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/X 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.

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