drupal  8.9.17
About: Drupal is a fully-featured content management/discussion engine suitable to setup a news-driven community or portal site. 8.9 release (LTS).
  Fossies Dox: drupal-8.9.17.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

drupal Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies drupal-8.9.17.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).


  • About Drupal
  • Configuration and features
  • Installation profiles
  • Appearance
  • Developing for Drupal
  • More information


Drupal is an open source content management platform supporting a variety of websites ranging from personal weblogs to large community-driven websites. For more information, see the Drupal website at https://www.drupal.org, and join the Drupal community at https://www.drupal.org/community.

Legal information about Drupal:

  • Know your rights when using Drupal: See LICENSE.txt in the "core" directory.
  • Learn about the Drupal trademark and logo policy: https://www.drupal.com/trademark


Drupal core (what you get when you download and extract a drupal-x.y.tar.gz or drupal-x.y.zip file from https://www.drupal.org/project/drupal) has what you need to get started with your website. It includes several modules (extensions that add functionality) for common website features, such as managing content, user accounts, image uploading, and search. Core comes with many options that allow site-specific configuration. In addition to the core modules, there are thousands of contributed modules (for functionality not included with Drupal core) available for download.

More about configuration:


Installation profiles define additional steps (such as enabling modules, defining content types, etc.) that run after the base installation provided by core when Drupal is first installed. There are two basic installation profiles provided with Drupal core.

Installation profiles from the Drupal community modify the installation process to provide a website for a specific use case, such as a CMS for media publishers, a web-based project tracking tool, or a full-fledged CRM for non-profit organizations raising money and accepting donations. They can be distributed as bare installation profiles or as "distributions". Distributions include Drupal core, the installation profile, and all other required extensions, such as contributed and custom modules, themes, and third-party libraries. Bare installation profiles require you to download Drupal Core and the required extensions separately; place the downloaded profile in the /profiles directory before you start the installation process.

More about installation profiles and distributions:


In Drupal, the appearance of your site is set by the theme (themes are extensions that set fonts, colors, and layout). Drupal core comes with several themes. More themes are available for download, and you can also create your own custom theme.

More about themes:


Drupal contains an extensive API that allows you to add to and modify the functionality of your site. The API consists of "hooks", which allow modules to react to system events and customize Drupal's behavior, and functions that standardize common operations such as database queries and form generation. The flexible hook architecture means that you should never need to directly modify the files that come with Drupal core to achieve the functionality you want; instead, functionality modifications take the form of modules.

When you need new functionality for your Drupal site, search for existing contributed modules. If you find a module that matches except for a bug or an additional needed feature, change the module and contribute your improvements back to the project in the form of a "patch". Create new custom modules only when nothing existing comes close to what you need.

More about developing:


  • See the Drupal.org online documentation: https://www.drupal.org/documentation

  • For a list of security announcements, see the "Security advisories" page at https://www.drupal.org/security (available as an RSS feed). This page also describes how to subscribe to these announcements via email.

  • For information about the Drupal security process, or to find out how to report a potential security issue to the Drupal security team, see the "Security team" page at https://www.drupal.org/security-team

  • For information about the wide range of available support options, visit https://www.drupal.org and click on Community and Support in the top or bottom navigation.