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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.

Popper is an open source JavaScript library for tooltips and popovers.

Bootstrap is an open source HTML, CSS, and JavaScript framework.

Animate is a CSS library focusing on animations.

Tailwind is a CSS framework for rapidly building web interfaces.

The Apache HTTP Server is an open source web server by the Apache Software Foundation.

Cloudflare Server is a web server developed by Cloudflare.

Nhan Hoa is a Vietnamese domain registrar and web hosting provider.

Nhan Hoa is a Vietnamese domain registrar and web hosting provider.

Cloudflare provides a content delivery network.

Nhan Hoa is a Vietnamese provider of internet services. This includes its ZONEDNS brand.

Cloudflare provides DNS servers and other web services.

Nhan Hoa is a Vietnamese provider of internet services. This includes its Umail brand.

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

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

The CDNJS is a content distribution network, hosting a large number of JavaScript libraries, provided by CloudFlare.

unpkg is a JavaScript content delivery network for libraries that use the npm package manager.

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.

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.

Non-HttpOnly cookies are used in the HTTP protocol and also in client side scripts, which may be a security threat.

Non-secure cookies may be used via an unencrypted connections, which may be a security threat.

Gzip (GNU zip) is a file compression algorithm.

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

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

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

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.

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.

JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON.

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.

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

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

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