Content Platform Team

Group:	MediaWiki Engineering, Product and Technology
Start:	August 2021
Backlog:	#Content-Platform-Team

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The Content Platform team manages how all wiki page content is displayed to readers and editors on all devices. Their goal is to support the large number of content formats and types across all languages efficiently and to enable new scenarios for experience teams.

Mission statement

In short, the Content Platform team deals with content formats and transformations between them.

A bit more specifically,

We (aim to) provide specifications and guidance for wiki content formats
We develop transformations between content formats
We build and maintain content rendering and content transformation infrastructure
We build tooling to verify content integrity and content migration

Team members

Mateus Santos Senior Product Manager	Subbu Sastry Principal Software Engineer	C. Scott Ananian Staff Software Engineer & Tech Lead
Arlo Breault Senior Software Engineer	Isabelle Hurbain-Palatin Senior Software Engineer	Otto Šleger Software Engineer III
Yiannis Giannelos Staff Software Engineer	Sérgio Lopes Sr Engineering Manager

History

Prior to May 2015, the MediaWiki Core team was responsible for MediaWiki Core and its Parser, and the Parsoid team was responsible for Parsoid .

In May 2015, the Parsoid team was rebranded as the Parsing team and the Parser and Parsoid were brought under the same roof, with new members temporarily joining in May 2015 and April 2016 before leaving in April 2017 to join the MediaWiki Platform team .

In August of 2021, the Parsing team welcomed members of Maps and Product Infrastructure team to become the Content Transform team.

In July 2026, following the expansion of the MediaWiki Engineering Group, the team became the MediaWiki Content Platform team.

Current Work

In the 2026-2027 Annual Plan, the Content Platform team will be working on the following three items, under the ST6: Strengthening & Risk Mitigation of the Platform objective:

ST6.4: By the end of Q3, our platform is able to sustain 20% of page views from logged-in users
ST6.5: By end of Q3, all WMF wikis use Parsoid for desktop & mobile readviews and metadata
ST6.6: By the end of Q2, 5 wikis with at least 5% of content pages each are using modules shared via the new cross-wiki collaboration infrastructure

Collaboration

Engaging with the Content Platform team

Phabricator

Anyone outside of the Wikimedia Foundation can get our attention by opening a ticket in Phabricator tagged with Content-Platform-Team. This will make the ticket visible to the team at their weekly triage meeting, where the ticket will be given one of the following dispositions:

It may be moved to another project the Content Platform team is responsible for.
It may be moved to the "Later" column on the Content-Platform-Team board, if it is an issue the team is not ready to deal with yet.
It may have the Content-Platform-Team tag removed, if the team disagrees that the ticket falls under the projects they are responsible for.

Gerrit

The team maintains a Gerrit review board. Reviews in code repositories that the team is responsible for should be visible on this board. This board is, however, a work in progress, and may not encompass all the repository of the team. To get our attention on a specific review, tag it #ctt-attention. This will make the review visible to the team, where the review will be given one of the following dispositions:

It may be attributed to a team member for review
It may be tagged #ctt-techforum for patches that require a team discussion
It may have the #ctt-attention tag removed and/or the #ctt-triaged tag added, if the team disagrees that the review falls under the projects they are responsible for.

Slack (Wikimedia Foundation Internal Only)

Wikimedia Foundation personnel can find us on Slack at #content-platform.

Code repositories that the Content Platform team is either directly responsible for or shares responsibility with other teams

Service	Description/Notes
Parsoid	PHP library that is used for converting back and forth between wikitext and HTML
FeaturedFeeds	Adds syndication feeds of wiki's featured content
JsonConfig	Provides a wiki-based JSON configuration system
Kartographer	Allows adding maps to pages
Kartotherian	Map tile service developed by the Wikimedia Foundation, which itself contains code from Mapbox
Language converter	Script & regional term conversion for several languages, e.g. Chinese and Serbian.
Linter	Help users find out-dated bits of wikitext to fix them
Mathoid	Mathoid is being phased out as part of RESTBase sunsetting (T338429)
MobileApp	Serves styles and scripts for use in the Wikimedia native apps
Page Content Service	Serves various APIs for rendering page content
MultiTitle	Gives the appearance of one page having multiple titles
Output Transform	Post processing ParserOutput contents
PageAssessments	Stores assessments of pages made by WikiProjects
PageImages	Stores information about images representing a page
Parser	Issues relating to the wikitext parser, which converts wikitext markup into HTML (including ParserOutput and ParserCache)
ParserCache	Responsible for caching the rendered output of a wiki page
ParserFunctions	Enhances parser with logical and string functions
ParserMigration	Allows users to preview the appearance of articles with the new Parsoid parser
Parsoid Integration	Issues relating to MediaWiki's integration with the next-generation Parsoid parser
PdfHandler	Handles PDF files like multipage DJVU
Proton	Renders PDF versions of Wikipedia articles.
Scribunto	Provides a framework for embedding scripting languages into MediaWiki pages
TemplateStyles	Allows for loading sanitized CSS stylesheets from a template
Wikifeeds	Provides content used in the featured content feeds of the Wikimedia Apps
IDLeDOM	Set of PHP interfaces automatically generated from the HTML DOM API, based on a rigorous PHP binding of the WHATWG WebIDL specification
RemexHtml	Parser for HTML 5
wikimedia/wikipeg	PEG tokenizer library which we forked from jspeg around 2019 to develop custom / advanced features for our needs
Zest	Pure PHP CSS selector library which is a port of the JavaScript `zest.js` library.