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Extensions are features and add-ons developed for MediaWiki, the software platform that Wikia runs on. They are designed by third-party developers (that is to say, not Wikia or MediaWiki staff) for the purpose of either expanding the function of a wiki or overriding a built-in MediaWiki feature for customization purposes.

See Category:Extensions for help pages on Wikia Help. Note this article may not be completely up to date.

Preinstalled

See also Category:Extensions enabled by default.

Users and admins

Deleted user contributions
Gives sysops the ability to browse a user's deleted edits
Help:Global CSS and JS
Adds global user CSS and JavaScript to a page, fetched from the Central Wikia
Editcount
Displays edit count of a user

Wiki tools

CategoryTree
AJAX based gadget to display the category structure of a wiki
CharInsert
Allows creation of JavaScript box for inserting non-standard characters
DPLforum
DPL-based forum extension using wiki pages.
EasyTimeline
Timeline extension
GoogleDocs4MW
Adds <googlespreadsheet> tag for Google Docs' spreadsheets display
ImageMap
Allows client-side clickable image maps using <imagemap> tag
Inputbox
Allow inclusion of predefined HTML forms
Cite
Adds <ref[ name=id]> and <references/> tags, for citations
LinkSearch
Search for Weblinks
MostPopularArticles
Get list of most popular articles
MostPopularCategories
Get list of most popular categories
MultipleUpload
Allows users to upload up to five files at once
ParserFunctions
Enhance parser with logical functions
Poem
Adds <poem> tag for poem formatting
Polls
Set up single-choice polls.
RandomImage
Provides a random media picker using <randomimage />
RandomSelection
Displays a random option from the given set
RSS feed extension
Displays an RSS feed on a wiki page
TabView and Tabber
Methods for having "tabbed" content
Timeline
Editors can create timelines of events using this tool's syntax.
Video Embed Tool
Embeds videos from YouTube, Metacafe and many other sites, and adds Video pages
WikiHiero
Syntax to display hieroglyph
YouTube
Embeds YouTube and Google Video movies

Spam and blocking

AntiSpamInput
Simple spambot blocking mechanism
ConfirmEdit
Simple captcha implementation
Regular Expression Name Block
Alternate user block (by given name, using regular expressions, controlled globally)
Regular Expression Spam Block
Filters out unwanted phrases in edited pages, based on regular expression
SpamBlacklist
Regex based anti url spam tool

Other tools

AjaxLogin
Dynamic box which allow users to login and remind password
SyntaxHighlight
Code syntax highlighter - supports many languages
ArticleMetaDescription
Adding meta-description tag containing snippet of the Article
MiniUpload
Allow users to upload new files directly from edit page
SharedMessages
Allows drawing "shared" template messages from the shared DB
Shared Help
Provides the Help namespace pages from this wiki into all wikis (controlled globally)
SiteWideMessages
Provides an interface for sending messages seen on all wikis

On request

This is a non-comprehensive list of MediaWiki extensions that are available upon request at Wikia. See also Category:Extensions enabled on request.

AbuseFilter
Tool for automatically catching non-constructive edits.
Calendar
Allows for embedding of a calendar into wiki pages.
DynamicPageList2
Universal reporting tool for wikis, which adds the <dpl> tag
GoogleMaps Extension
Easily create maps with wiki-fied markers

Semantic Extensions

Wikia does offer a family of extensions called "Semantic" extensions. The Semantic MediaWiki suite allows for annotated data from one wiki page to be pulled and queried on other wiki pages. For more about what Semantic is, please visit this page. In order for any extension in the package to work, the parent Semantic MediaWiki extension must also be enabled.

Due to software upgrades, Wikia is not able to offer Semantic installation at this time. You may still request SMW for your wiki at Special:Contact, where you will be added to a waiting list and re-contacted when the extension is again available for installation.

Semantic MediaWiki
The parent piece of the software that does the base tasks of allowing data annotations to be set and queried.
Semantic Drilldown
Allows for dynamic navigation through complex data.
Semantic Forms
Creates a form-based editing software for pages.
Semantic Result Formats
Adds a number of query tools to the base SMW package.

Restricted

CheckUser
Grants users with the appropriate permission the ability to check user's IP addresses and other information ::(This is generally a staff-only tool. A few wikis have a few users with this access, but it is not requestable.)
Protect site
Allows a site administrator to temporarily block various (this is enabled as deemed needed)
Lookup Contribs
Displays user contributions on multiple wikis
Multiple Lookup
Provides user lookup on multiple wikis

External links

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