--- title: "Docusaurus: vendor profile: Agent Ready HTML" description: "Docusaurus, a framework: 1 of 6 standards stated as supported, 14 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/docusaurus/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Docusaurus: vendor profile: Agent Ready HTML > Docusaurus, a framework: 1 of 6 standards stated as supported, 14 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/docusaurus/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # Docusaurus: vendor profile In short Docusaurus writes one HTML file per route at build time, adds canonical and hreflang links on its own, and stops a production build at a broken link. No robots.txt, llms.txt or .md twin comes with it, and headers and status codes fall to the host. docusaurus.io returned 404 for a docs page's .md address on 2026-11-05. ## At a glance **standards.txt** docusaurus ```text llms-txt = no statement markdown-negotiation = no statement markdown-twin = no statement initial-html = supports real-404 = no statement vary-accept = no statement ``` 1 supports, 0 partial or announced, 5 no statement. **Docusaurus** Framework Docusaurus is Meta's open source static site generator for docs that writes an HTML file per route at build time with sitemap, canonical and hreflang output; llms.txt, markdown copies and status codes are left to plugins and the host. Type [Framework](https://agentreadyhtml.com/vendors/by-type/framework/) Operator, as the facts below state it Meta Home page [docusaurus.io](https://docusaurus.io/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - Docusaurus 3.10, announced on 2026-04-07, is the last release in the v3 line and adds future.v4 flags so sites can opt in to v4 breaking changes early. \[primary source, 2026-04-07\] [source](https://docusaurus.io/blog/releases/3.10), read 5 November 2026. - Docusaurus 3.10 marked Docusaurus Faster stable, its build stack of Rspack, SWC and LightningCSS, set with faster: true and planned as the v4 default. \[primary source, 2026-04-07\] [source](https://docusaurus.io/blog/releases/3.10), read 5 November 2026. - Docusaurus 3.10 added a basic AGENTS.md file to the repository and restated that any AI use in contributions to Docusaurus must be disclosed. \[primary source, 2026-04-07\] [source](https://docusaurus.io/blog/releases/3.10), read 5 November 2026. - Docusaurus 3.9, released on 2025-09-25, dropped Node.js 18 and added support for Algolia DocSearch v4 with its AskAI feature. \[primary source, 2025-09-25\] [source](https://docusaurus.io/blog/releases/3.9), read 5 November 2026. - Docusaurus adds title, description and canonical URL links to every Markdown page on its own, plus hreflang alternate links when i18n is configured. \[primary source\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - Docusaurus produces rich search result markup for blog posts out of the box, and site-wide JSON-LD is declared by hand through headTags or a block. \[primary source\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - Docusaurus does not generate robots.txt, which owners add as a static asset, and its noIndex site option stamps noindex, nofollow on every page. \[primary source\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - Docusaurus's @docusaurus/plugin-sitemap ships in preset-classic, writes sitemap.xml after a production build and skips pages carrying a noindex robots meta tag. \[primary source\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - Docusaurus's trailingSlash option sets the file layout, emitting /docs/myDoc/index.html when left undefined and /docs/myDoc.html when set to false. \[primary source\] [source](https://docusaurus.io/docs/api/docusaurus-config), read 5 November 2026. - Docusaurus's onBrokenLinks setting throws by default, so a production build fails when it finds a broken link. \[primary source\] [source](https://docusaurus.io/docs/api/docusaurus-config), read 5 November 2026. - The Docusaurus deployment guide tells Netlify users to switch off the Pretty Urls setting, which can cause lowercase URLs, extra redirects and 404 errors. \[primary source\] [source](https://docusaurus.io/docs/deployment), read 5 November 2026. - docusaurus.io/docs/seo fetched with curl on 2026-11-05 returned 89,643 bytes of HTML with 1,342 visible words before any script ran. \[observed, 2026-11-05\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - On 2026-11-05 docusaurus.io sent text/html to a request for /docs/seo with Accept: text/markdown, and /docs/seo.md returned HTTP 404. \[observed, 2026-11-05\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. - The initial HTML of docusaurus.io/docs/seo on 2026-11-05 held one JSON-LD block of type BreadcrumbList. \[observed, 2026-11-05\] [source](https://docusaurus.io/docs/seo), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | Docusaurus | Open source static site generator for documentation sites, blogs and pages, maintained by Meta Open Source. | Free, open source; Free; version 3.10.2 current on 2026-11-05 | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | no statement | No llms.txt option in the docusaurus-config reference or SEO guide for 3.10.2; llms.txt comes from community plugins. | none | | markdown-negotiation | no statement | Neither the SEO guide nor the config reference covers markdown output, and docusaurus.io sent text/html to a markdown request on 2026-11-05. | none | | markdown-twin | no statement | Core Docusaurus documents no .md copies, and docusaurus.io/docs/seo.md answered 404 on 2026-11-05. | none | | initial-html | supports | The SEO guide calls Docusaurus a static site generator that writes one HTML file per route. | source | | real-404 | no statement | Docusaurus emits static files and leaves the status code to the host, and docusaurus.io gave a made-up path 404 on 2026-11-05. | none | | vary-accept | no statement | Docusaurus has no negotiation to vary on, and docusaurus.io sent vary: Accept-Encoding only. | none | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: yes; 701 words; 0 JSON-LD blocks | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/html, Vary: Accept-Encoding | 2026-11-05 | | /llms.txt at the host root | HTTP 404, text/html, 20 KB | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 43, grade D | 2026-11-03 | | Cloudflare keyless scan | 7, L0 Not Ready | 2026-11-05 | | Shared crawl row | outside the ranked slice; home page HTTP 200; H1 in the HTML: yes; 762 words; JSON-LD types: none; answers markdown: no; made-up path HTTP 404; llms.txt valid: no | 2026-11-04 | ## What it does not do - Docusaurus core writes no llms.txt and no .md twin of pages; both need a third-party plugin, and docusaurus.io/docs/seo.md returned 404. - Docusaurus does not control HTTP status codes or headers; 404 handling, trailing-slash redirects and X-Robots-Tag depend on the static host. ## Related pages on this site - [Frameworks in this section](https://agentreadyhtml.com/vendors/by-type/framework/) - [Docusaurus: platform profile and rubric scores](https://agentreadyhtml.com/platforms/docusaurus/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [Docusaurus: home page](https://docusaurus.io/) https://docusaurus.io/, read 5 November 2026 2. [Docusaurus 3.10 | Docusaurus](https://docusaurus.io/blog/releases/3.10) https://docusaurus.io/blog/releases/3.10, read 5 November 2026 3. [Docusaurus 3.9 | Docusaurus](https://docusaurus.io/blog/releases/3.9) https://docusaurus.io/blog/releases/3.9, read 5 November 2026 4. [Search engine optimization (SEO) | Docusaurus](https://docusaurus.io/docs/seo) https://docusaurus.io/docs/seo, read 5 November 2026 5. [docusaurus.config.js | Docusaurus](https://docusaurus.io/docs/api/docusaurus-config) https://docusaurus.io/docs/api/docusaurus-config, read 5 November 2026 6. [Deployment | Docusaurus](https://docusaurus.io/docs/deployment) https://docusaurus.io/docs/deployment, read 5 November 2026 Last reviewed 5 November 2026 Edition Crawl 2026-11-04 Page updated 2026-11-05 Method How the viewer reads a page, how a file is graded and how a platform is scored: [the method page](https://agentreadyhtml.com/method/).