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Site Info - Gutenberg.org

Overview of web technologies used by Gutenberg.org.

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Free eBooks | Project Gutenberg

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Python is a general-purpose scripting language.

Python
used on inner pages

JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

JavaScript
used on inner pages

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

Apache

CherryPy is an object-oriented open source HTTP framework written in Python.

CherryPy 18.10.0
0% of sites use a newer version
used on inner pages

Gmail is the email service provided by Google.

Gmail

Sectigo (formerly Comodo CA) is a US-based SSL certificate authority.

Sectigo
used on inner pages

Facebook Social Plugins provide a way for Facebook users to share web pages with their friends.

Facebook
used on inner pages

A Twitter/X Button allows a Twitter user to post a tweet from the visited site.

Twitter/X
used on inner pages

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

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.

Inline CSS

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

Cookies expiring in hours
used on inner pages

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

Non-HttpOnly Cookies
used on inner pages

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

Non-Secure Cookies
used on inner pages

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression
used on inner pages

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.

IPv6

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

Default protocol https

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.

Open Graph

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Generic RDFa

Twitter/X Cards enable automatic attachment of photos, videos and media elements to tweets.

Twitter/X Cards
used on inner pages

Microdata is a specification to integrate metadata within existing content on web pages.

Microdata
used on inner pages

HTML5 is the fifth revision of the HTML standard.

HTML5

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

UTF-8

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.

PNG

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

JPEG

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