Agent Ready HTML

Rendered HTML

In short

The DOM after a browser has run the page scripts. A human and a JavaScript-running agent see it; a plain-fetch client does not. Example: Google Search runs JavaScript in an evergreen Chromium, but notes that not all bots can run JavaScript. Related terms: App shell, Hydration, Initial HTML, schema.org, rel="describedby".

Source of the example

The example in the summary above is from developers.google.com, read 4 November 2026.

Where it shows up on this site

Neighbouring terms

  • App shell: A near-empty HTML document whose content is injected by JavaScript after load, typically a single div with id root or app.
  • Hydration: The step where client JavaScript attaches event handlers to server-rendered HTML.
  • Initial HTML: The HTML document a server returns for a URL before any JavaScript runs.
  • schema.org: The shared vocabulary of types and properties (Organization, Product, TechArticle) used in JSON-LD.
  • rel="describedby": A link relation that points from a page to the llms.txt file covering it.

Sources

  1. developers.google.com https://developers.google.com/search/docs/crawling-indexing/javascript/javascript-seo-basics, read 4 November 2026

Last reviewed 4 November 2026