--- title: "Duda: vendor profile: Agent Ready HTML" description: "Duda, a site builder: 1 of 6 standards stated as supported, 7 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/duda/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Duda: vendor profile: Agent Ready HTML > Duda, a site builder: 1 of 6 standards stated as supported, 7 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/duda/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # Duda: vendor profile In short Duda regenerates llms.txt on every publish with no setting to turn on, using each page's meta description and falling back to the meta title. On 2026-11-05 duda.co served a 119,245-byte llms.txt, and its home page held no H1 in the plain HTML. Plans start at $19 a month after a 14-day free period. ## At a glance **standards.txt** duda ```text llms-txt = supports markdown-negotiation = no statement markdown-twin = no statement initial-html = no statement real-404 = no statement vary-accept = no statement ``` 1 supports, 0 partial or announced, 5 no statement. **Duda** Site builder Website builder sold to agencies and SaaS platforms. Duda writes an llms.txt on every publish, listing live pages, store products and language versions with their meta descriptions, and leaving out drafts and noindex pages. Type [Site builder](https://agentreadyhtml.com/vendors/by-type/site-builder/) Home page [www.duda.co](https://www.duda.co/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - Duda announced on 2025-06-27 that it was rolling out llms.txt on all published sites. \[primary source, 2025-06-27\] [source](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search), read 5 November 2026. - Duda regenerates llms.txt every time a site is published, with no setting to turn on. \[primary source\] [source](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search), read 5 November 2026. - A Duda llms.txt lists live URLs including blog posts, native store products and categories, and language versions. \[primary source\] [source](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search), read 5 November 2026. - Duda uses each page's meta description in llms.txt and falls back to the meta title when no description exists. \[primary source\] [source](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search), read 5 November 2026. - Duda leaves drafts and noindex pages out of llms.txt. \[primary source\] [source](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search), read 5 November 2026. - Duda's pricing page offers a 14-day free period with plans from $19 a month and lists Basic, Team, Agency and White Label plans. \[primary source, 2026-11-05\] [source](https://www.duda.co/pricing), read 5 November 2026. - Duda says its plans separate access to the platform from individual site subscriptions, aimed at agencies, SaaS companies and professionals building client sites. \[primary source\] [source](https://www.duda.co/pricing), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | Duda website builder | Multi-site builder for agencies and SaaS platforms with automatic llms.txt on publish. | From USD 19; Plans from 19 USD a month after a 14-day free period | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | supports | Duda generates llms.txt on every publish. | source | | markdown-negotiation | no statement | No Accept-header markdown in the pages read. | none | | markdown-twin | no statement | No .md copies in the pages read. | none | | initial-html | no statement | Rendering is not described in the pages read. | none | | real-404 | no statement | Not covered in the pages read. | none | | vary-accept | no statement | Not covered in the pages read. | none | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: no; 2,457 words; 1 JSON-LD block | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/html, Vary: Accept-Encoding,User-Agent,Accept-Encoding | 2026-11-05 | | /llms.txt at the host root | HTTP 200, text/plain, 116 KB, starts with an H1 | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 59, grade C | 2026-09-04 | | Cloudflare keyless scan | 20, L1 Basic Web Presence | 2026-11-05 | ## What it does not do - Duda's llms.txt is generated, not written by the owner, in the update read; the post describes no way to edit the generated file. ## Related pages on this site - [Site builders in this section](https://agentreadyhtml.com/vendors/by-type/site-builder/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [Duda: home page](https://www.duda.co/) https://www.duda.co/, read 5 November 2026 2. [Duda is Prepping Your Sites for the Future of AI Search](https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search) https://www.duda.co/product-updates/duda-is-prepping-your-sites-for-the-future-of-ai-search, read 5 November 2026 3. [Plans & Pricing | Duda](https://www.duda.co/pricing) https://www.duda.co/pricing, 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/).