Overview of web technologies used by Greenend.org.uk.
Website Background
The Green End Organisation
Home of the Sinister Green End Organisation
Description on Homepage
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Popularity rank
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Server-side Programming Language
Perl is a general-purpose, interpreted language, nowadays also used to create web pages.
Perl 5.32.1
12% of sites use a newer version
Client-side Programming Language
JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.
The Apache HTTP Server is an open source web server by the Apache Software Foundation.
Apache 2.4.62
12% of sites use a newer version
Debian is a Linux distribution.
Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.
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.
Embedded CSS
used on inner pages
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.
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.
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.
The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.
Strict version of HTML.
HTML Strict 4.01
Transitional version of HTML.
HTML Transitional 4.01
version 3.2 used until recently
used on inner pages
ISO-8859-1 (informally also called Latin-1) is an 8-bit character set for Western European languages.
UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.
UTF-8
used on inner pages
US-ASCII is a 7-bit character encoding system based on the English alphabet.
US-ASCII
used on a subdomain
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.
JPEG
used on a subdomain
GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.
GIF
used on a subdomain
United Kingdom
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4