Markdown and llms.txt tooling in the vendors section
In short
7 tools that write llms.txt or markdown are profiled: Firecrawl, Yoast, Jina AI Reader, Rank Math, AIOSEO, Website LLMs.txt and the Answer.AI llms-txt module. 5 are marked supports for llms.txt, and 7 have no statement on markdown for an Accept header. Prices are dated 5 November 2026.
Crawl edition 2026-11-04, page updated 2026-11-05. How the viewer, the index and the scores work.
Markdown tooling here is a tool that writes llms.txt, produces markdown from pages, or shows what an agent extracts from a page. 4 of the 7 are free or open source, and 3 are paid subscriptions. The plain fetch found an H1 in the initial HTML on all 7 sites it could request, and 5 of them served an llms.txt.
Filter by typeDocs platformsFrameworksContent management systemsSite buildersHosts, CDNs and edge productsMarkdown and llms.txt toolingAll vendors
The six standards across tools for markdown and llms.txt
| Standard | Supports | Partial | No statement |
|---|---|---|---|
| llms-txt generates or serves /llms.txt | 5 | 1 | 1 |
| markdown-negotiation answers Accept: text/markdown on the same URL | 0 | 0 | 7 |
| markdown-twin publishes a .md copy of each page | 1 | 0 | 6 |
| initial-html puts the page content in the server HTML by default | 0 | 0 | 7 |
| real-404 answers a missing path with a 404 status | 0 | 0 | 7 |
| vary-accept sends Vary: Accept when it negotiates | 0 | 0 | 7 |
Markdown and llms.txt tooling
| Vendor | What it does for this layer | Standards stated | Pricing model | Readings of its own site | Last read |
|---|---|---|---|---|---|
| All in One SEO (AIOSEO) | WordPress SEO plugin whose LLMs.txt Generator writes llms.txt for every user and, on Pro plans, llms-full.txt with markdown formatting, from the post types and taxonomies a site selects. | 1 supported: llms-txt | subscription | Cloudflare scan 20, 2026-11-05 Ora score not cached | 2026-11-05 |
| Firecrawl | Paid web data API that fetches and renders pages and returns them as markdown, cleaned HTML, raw HTML or JSON, with crawl, map and search endpoints; it honours robots.txt by default and reports each page's HTTP status, so 404s stay visible. | None stated as supported 1 partial: llms-txt | freemium, open source | Cloudflare scan 53, 2026-11-05 Ora score 85, 2026-11-05 | 2026-11-05 |
| Jina AI Reader | Hosted API that fetches any URL in a browser and returns LLM-ready markdown or JSON when the URL is prefixed with r.jina.ai, plus a search endpoint at s.jina.ai; it shows a site what an agent pipeline extracts from its pages. | None stated as supported | usage-based | Cloudflare scan 20, 2026-11-05 Ora score 61, 2026-10-01 | 2026-11-05 |
| llms-txt (Answer.AI reference tooling) | The Python module published with the llms.txt proposal: it parses an llms.txt file into sections and expands the linked files into an XML context, alongside the proposal text that defines the file and the .md page copies. | 2 supported: llms-txt, markdown-twin | open source | Cloudflare scan 7, 2026-11-05 Ora score 44, 2026-10-11 | 2026-11-05 |
| Rank Math SEO | WordPress SEO plugin with an LLMS Txt module that writes /llms.txt from the post types and taxonomies a site picks, leaves out noindex posts, and caps the list at a configurable number of items. | 1 supported: llms-txt | subscription | Cloudflare scan 27, 2026-11-05 Ora score 44, 2026-09-16 | 2026-11-05 |
| Website LLMs.txt (WordPress plugin) | Free WordPress plugin that builds and serves /llms.txt from published content on a schedule, reads noindex and nofollow flags from Yoast, Rank Math, SEOPress and AIOSEO, and leaves out content anonymous visitors cannot read. | 1 supported: llms-txt | free | The domain wordpress.org is shared with the wordpress record, so its Ora and Cloudflare scores are on that record. | 2026-11-05 |
| Yoast | Dutch maker of the Yoast SEO plugin for WordPress and app for Shopify, part of Newfold Digital. Both can write an llms.txt, and the WordPress plugin adds a Schema Aggregation endpoint that serves a whole site's JSON-LD graph as one schemamap. | 1 supported: llms-txt | freemium, subscription | Cloudflare scan 20, 2026-11-05 Ora score 41, 2026-04-19 | 2026-11-05 |
The other types: docs platforms, frameworks, content management systems, site builders, hosts, CDNs and edge products. Back to all vendors.
Sources
- llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 5 November 2026
- Cloudflare: isitagentready.com https://isitagentready.com/, read 5 November 2026
Last reviewed 5 November 2026