WordPress: vendor profile

In short

WordPress core renders pages through themes on the server, with a core sitemap, a virtual robots.txt and 404 handling. Plugins or custom code add llms.txt, markdown and JSON-LD. The markdown on WordPress.org's own sites is custom work by the Meta team, switched on for most of that network since 2026-03-03.

At a glance

standards.txt wordpress

llms-txt               = partial
markdown-negotiation   = partial
markdown-twin          = partial
initial-html           = supports
real-404               = supports
vary-accept            = partial

2 supports, 4 partial or announced, 0 no statement.

WordPress Content management system

WordPress is open-source PHP software whose themes render pages on the server, with a core XML sitemap, a virtual robots.txt and real 404 handling; llms.txt and markdown output come from plugins, not core.

Type: Content management system
Home page: wordpress.org, answered HTTP 200 on 2026-11-05
Last read: 5 November 2026

What it does for this layer

WordPress started in 2003 as a fork of b2/cafelog by Mike Little and Matt Mullenweg, is built on PHP and MariaDB, and is licensed under the GPLv2. [primary source] source, read 5 November 2026.
wordpress.org states that the WordPress trademark is the intellectual property of the WordPress Foundation. [primary source] source, read 5 November 2026.
WordPress 7.0 "Armstrong", released on 2026-05-20, added an AI Client in core for calling generative AI models and a Connectors screen that manages those connections. [primary source, 2026-05-20] source, read 5 November 2026.
WordPress core has exposed an XML sitemap index at /wp-sitemap.xml since version 5.5, per a core dev note of 2020-07-22, with up to 2,000 entries per sitemap by default and room for 50,000 sitemaps in the index. [primary source, 2020-07-22] source, read 5 November 2026.
WordPress core sitemaps turn off when the Site Visibility setting asks search engines not to index the site, and the wp_sitemaps_enabled filter overrides that default. [primary source] source, read 5 November 2026.
WordPress serves a virtual robots.txt from do_robots(), which disallows the admin path, allows admin-ajax.php, and passes its output through the robots_txt filter available since version 3.0.0. [primary source] source, read 5 November 2026.
In the WordPress template hierarchy a theme renders a missing URL with 404.php and falls back to index.php when no 404 template exists. [primary source] source, read 5 November 2026.
WP::handle_404() switches a request to a 404 status when it matches no posts or existing objects and is neither a search nor the homepage. [primary source] source, read 5 November 2026.
Fetched with curl 8.7.1 on 2026-11-05, a made-up path on wordpress.org came back as HTTP 404 with a 125,068-byte HTML page. [observed, 2026-11-05] source, read 5 November 2026.
Since 2026-03-03 most WordPress.org sites, a network run by the Meta team and separate from the software's defaults, return markdown for Accept: text/markdown or ?output_format=md and point to it with a link rel=alternate tag of type text/markdown. [primary source, 2026-03-03] source, read 5 November 2026.
The WordPress 7.0 release post requested with ?output_format=md through curl 8.7.1 on 2026-11-05 came back as text/markdown, 67,334 bytes, with Vary: accept, content-type. [observed, 2026-11-05] source, read 5 November 2026.
The LLM Friendly plugin in the WordPress.org directory writes /llms.txt and per-post .md exports, and keeps its Accept: text/markdown mode off by default because that mode sends Vary: Accept and needs caches that honour it. [secondary source] source, read 5 November 2026.

Products and plans

Plans and prices as the vendor's own pages showed them on the date read.
Product	What it is	Price	As of	Source
WordPress	Open-source PHP content management system downloaded from wordpress.org.	Free, open source GPLv2 or later	2026-11-05	source

Standards

The six standards this site tracks; no statement means the pages read said nothing.
Standard	Status	What the vendor's pages say	Source
llms-txt	partial	Core writes no llms.txt; plugins such as LLM Friendly add /llms.txt.	source
markdown-negotiation	partial	Core has no markdown output; the LLM Friendly plugin offers opt-in Accept: text/markdown negotiation on singular URLs.	source
markdown-twin	partial	Plugins add .md endpoints, for example LLM Friendly under /{base}/{post_type}/{path}.md.	source
initial-html	supports	PHP template files chosen through the template hierarchy generate each page on the server.	source
real-404	supports	WP::handle_404() issues a 404 when a request matches no posts and no existing object.	source
vary-accept	partial	Only with a plugin; LLM Friendly sends Vary: Accept when its negotiation mode is on.	source

Checks on its own site

Readings of wordpress.org, the vendor's own website, which describe that site and not the product.
Reading	Result	Date
Home page request	HTTP 200; H1 in the initial HTML: yes; 393 words; 1 JSON-LD block	2026-11-05
Request with Accept: text/markdown	HTTP 200, text/markdown, Vary: Accept	2026-11-05
/llms.txt at the host root	HTTP 200, text/plain, 5.6 KB, starts with an H1	2026-11-05
A made-up path	HTTP 404	2026-11-05
Ora score, cached	65, grade C	2026-11-01
Cloudflare keyless scan	33, L1 Basic Web Presence	2026-11-05
Shared crawl row	Tranco rank 65; home page HTTP 200; H1 in the HTML: yes; 529 words; JSON-LD types: Organization, WebSite, WebPage; answers markdown: yes; made-up path HTTP 404; llms.txt valid: yes	2026-11-04

What it does not do

WordPress core ships no llms.txt and no markdown output; the markdown on wordpress.org itself is custom work by the WordPress.org Meta team.
WordPress core prints no JSON-LD structured data, so schema comes from the theme or an SEO plugin.
The core robots.txt from do_robots() names no AI crawlers; blocking them takes a robots_txt filter, a physical robots.txt file or a plugin.

Related pages on this site

Sources

WordPress: home page https://wordpress.org/, read 5 November 2026
About | WordPress.org https://wordpress.org/about/, read 5 November 2026
WordPress 7.0 Armstrong | WordPress News https://wordpress.org/news/2026/05/armstrong/, read 5 November 2026
New XML Sitemaps Functionality in WordPress 5.5 | Make WordPress Core https://make.wordpress.org/core/2020/07/22/new-xml-sitemaps-functionality-in-wordpress-5-5/, read 5 November 2026
do_robots() | Developer.WordPress.org https://developer.wordpress.org/reference/functions/do_robots/, read 5 November 2026
Template Hierarchy | Theme Handbook https://developer.wordpress.org/themes/basics/template-hierarchy/, read 5 November 2026
WP::handle_404() | Developer.WordPress.org https://developer.wordpress.org/reference/classes/wp/handle_404/, read 5 November 2026
Markdown now available on WordPress.org | Make WordPress.org https://make.wordpress.org/meta/2026/03/03/markdown-now-available-on-wordpress-org/, read 5 November 2026
LLM Friendly | WordPress plugin https://wordpress.org/plugins/llm-friendly/, read 5 November 2026

Last reviewed 5 November 2026