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PHP is a scripting language for creating websites.

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.

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

IDC Frontier is a Japanese cloud service provider. This includes its brand First Server.

IDC Frontier is a Japanese cloud service provider. This includes its brand First Server.

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

IDC Frontier is a Japanese cloud service provider. This includes its brand First Server.

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

The SSL certificate is invalid because it is not issued for the domain where it is used.

Google Hosted Libraries (formerly called Google Libraries API) is a content distribution network for the most popular, open-source JavaScript libraries, provided by Google.

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.

Gzip (GNU zip) is a file compression algorithm.

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

Transitional version of XHTML.

Strict version of XHTML.

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

EUC-JP (Extended Unix Code Japanese) is a multibyte character encoding system used to represent Japanese text.

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.

Organizations