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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.

Tengine is an open source web server based on Nginx and originated by Taobao.

Alibaba a Chinese e-commerce and cloud computing company.

Huawei is a Chinese multinational technology corporation, also offering cloud computing services.

CenturyLink is a multinational communications company headquartered in USA, owned by Lumen. This includes its subsidiaries CenturyTel, Savvis, Qwest, Embarq and the former brand Level 3.

Zenlayer is a cloud services provider headquartered in USA.

RETN is a European data center provider.

Alibaba a Chinese e-commerce and cloud computing company.

Huawei is a Chinese multinational technology corporation, also offering cloud computing services.

Zenlayer is a cloud services provider headquartered in USA.

Tencent is a Chinese IT and telecommunication services provider. This includes its QQ and DNSPod brands.

Microsoft is a multinational technology company headquartered in USA, also offering email services.

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.

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.

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

Persistent cookies with an expiration time between 1 month and 1 year.

Persistent cookies with an expiration time between 1 and 10 years.

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.

Brotli is a lossless compression algorithm developed by Google.

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

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

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

Session cookies are temporary cookies, which are deleted when the user closes the browser.

Secure cookies are used only via an encrypted connections, which may increase security.

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.

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.

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.

GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.

AVIF (AV1 Image File Format) is an image file format specification for storing images or image sequences compressed with AV1 in the HEIF file format.

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