--- title: "Markdown and llms.txt tooling: vendors: Agent Ready HTML" description: "7 tools for markdown and llms.txt profiled for what they do with llms.txt, markdown, initial HTML and status codes, with dated prices. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/by-type/markdown-tooling/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Markdown and llms.txt tooling: vendors: Agent Ready HTML > 7 tools for markdown and llms.txt profiled for what they do with llms.txt, markdown, initial HTML and status codes, with dated prices. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/by-type/markdown-tooling/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # 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](https://agentreadyhtml.com/method/). 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 type**[Docs platforms](https://agentreadyhtml.com/vendors/by-type/docs-platform/)[Frameworks](https://agentreadyhtml.com/vendors/by-type/framework/)[Content management systems](https://agentreadyhtml.com/vendors/by-type/cms/)[Site builders](https://agentreadyhtml.com/vendors/by-type/site-builder/)[Hosts, CDNs and edge products](https://agentreadyhtml.com/vendors/by-type/host-or-cdn/)[Markdown and llms.txt tooling](https://agentreadyhtml.com/vendors/by-type/markdown-tooling/)[All vendors](https://agentreadyhtml.com/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](https://agentreadyhtml.com/vendors/by-type/docs-platform/), [frameworks](https://agentreadyhtml.com/vendors/by-type/framework/), [content management systems](https://agentreadyhtml.com/vendors/by-type/cms/), [site builders](https://agentreadyhtml.com/vendors/by-type/site-builder/), [hosts, CDNs and edge products](https://agentreadyhtml.com/vendors/by-type/host-or-cdn/). Back to [all vendors](https://agentreadyhtml.com/vendors/). ## Sources 1. [llms.txt proposal (llmstxt.org)](https://llmstxt.org/) https://llmstxt.org/, read 5 November 2026 2. [Cloudflare: isitagentready.com](https://isitagentready.com/) https://isitagentready.com/, read 5 November 2026 Last reviewed 5 November 2026