TYPO3: vendor profile

In short

TYPO3 core writes no llms.txt or markdown copies. The LLMS TXT Generator extension adds an index at /llms.txt and /.well-known/llms.txt and a .md page for each listed URL, and it needs TYPO3 13.4 LTS or 14.3 LTS. Hidden and no-index pages stay out. typo3.org itself served a 2,186-byte llms.txt on 2026-11-05.

At a glance

standards.txt typo3

llms-txt               = partial
markdown-negotiation   = no statement
markdown-twin          = partial
initial-html           = no statement
real-404               = partial
vary-accept            = no statement

0 supports, 3 partial or announced, 3 no statement.

TYPO3 Content management system

Open-source PHP CMS that renders pages on the server, with site-level error handlers per status code; llms.txt and .md copies of pages come from extensions such as the LLMS TXT Generator documented on docs.typo3.org.

Type: Content management system
Home page: typo3.org, answered HTTP 200 on 2026-11-05
Last read: 5 November 2026

What it does for this layer

The LLMS TXT Generator extension for TYPO3 produces an llms.txt index of the site and a markdown version of every listed page at its URL plus .md, without navigation, header or footer. [primary source] source, read 5 November 2026.
The LLMS TXT Generator serves the index at both /llms.txt and /.well-known/llms.txt. [primary source] source, read 5 November 2026.
The extension builds the markdown pages through TYPO3's regular rendering, so every content element and column position is included. [primary source] source, read 5 November 2026.
Hidden, access-restricted, hide-in-menu and no-index pages are left out of the TYPO3 extension's llms.txt. [primary source] source, read 5 November 2026.
The LLMS TXT Generator requires TYPO3 13.4 LTS or 14.3 LTS, PHP 8.2 to 8.5 and the TYPO3 system extension seo. [primary source] source, read 5 November 2026.
The TYPO3 extension can cache the generated llms.txt and export pages as markdown files from the command line. [primary source] source, read 5 November 2026.
The extension's documentation states that llms.txt is not an access-control mechanism and points to robots.txt and server configuration for crawl permissions. [primary source] source, read 5 November 2026.
TYPO3's ErrorController looks up the error handler a site configures for a status code and falls back to TYPO3's own error page when the site configures none. [primary source] source, read 5 November 2026.
TYPO3 14.2 added a generic error action to the ErrorController for HTTP status codes that the fixed error methods do not cover. [primary source] source, read 5 November 2026.
TYPO3's system extension seo gives editors meta tag fields and renders the meta tags and an XML sitemap in the frontend. [primary 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
TYPO3 CMS	Server-rendered PHP CMS with site configuration for error handling and a system extension for SEO.	No price on the pages read
LLMS TXT Generator (web-vision/ai-llms-txt)	Extension that writes llms.txt and serves .md copies of pages.	No price on the pages read

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	An extension writes llms.txt and /.well-known/llms.txt; core does not.	source
markdown-negotiation	no statement	The extension page describes .md URLs, not Accept-header negotiation.	none
markdown-twin	partial	With the extension, every listed page has a .md copy.	source
initial-html	no statement	Server rendering is TYPO3's architecture; the pages read do not state it in these words.	none
real-404	partial	Sites configure an error handler per status code; without one TYPO3 shows its own error page.	source
vary-accept	no statement	Not covered in the pages read.	none

Checks on its own site

Readings of typo3.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; 504 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/markdown, 2.1 KB, starts with an H1	2026-11-05
A made-up path	HTTP 404	2026-11-05
Ora score, cached	59, grade C	2026-10-30
Cloudflare keyless scan	20, L1 Basic Web Presence	2026-11-05

What it does not do

TYPO3 core ships neither an llms.txt nor markdown copies of pages; an extension supplies both.

Related pages on this site

Sources

TYPO3: home page https://typo3.org/, read 5 November 2026
Introduction: LLMS TXT Generator main documentation https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main, read 5 November 2026
Error handling: TYPO3 Explained main documentation https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/SiteHandling/ErrorHandling/Index.html, read 5 November 2026
Introduction: SEO main documentation https://docs.typo3.org/c/typo3/cms-seo/main/en-us/Introduction/Index.html, read 5 November 2026

Last reviewed 5 November 2026