Skip to content

AI visibility

My content only renders with JavaScript

Google renders JavaScript. Most AI crawlers do not — GPTBot, ClaudeBot and CCBot read the HTML your server sends and nothing more. To them the page is blank, so nothing on it can ever be quoted or cited. This is the single largest AI-visibility problem a site can have, and it is invisible in every classic SEO tool.

What 13x checks

This is rule aeo.content-without-js in the public registry: Content is readable without JavaScript. It runs on every audit, against the pages we actually fetched, and its result is derived from the response rather than estimated.

Surface
AI visibility
Score weight
16 of the readiness score
Scope
Runs on every audited page
Applies
To every site

Registry version 2026-07-30. Every rule is published, and the audit is deterministic — the same page produces the same finding every time.

The fix

The same text the audit hands you when this check fails on your own site.

Your HTML arrives essentially empty and the content is drawn by JavaScript. Google renders JS; GPTBot, ClaudeBot and CCBot do not. To them this page is blank.

This is an architecture change, not a setting. In rough order of effort:

1. Prerender at build time. If content does not change per request, generate static HTML. Vite has vite-plugin-ssr, CRA has react-snap, and most static hosts can prerender routes. 2. Move to a framework with server rendering. Next.js, Astro, Nuxt and SvelteKit all send real HTML by default. 3. Server-render the critical content only. The headline, the description and the primary copy in the HTML; leave interactive widgets to hydrate.

Verify with JavaScript disabled, or:

bash code
curl -s https://example.com | grep -o "<h1>.*</h1>"

If that prints nothing, no AI crawler can see your headline either.

Framework-specific versions

Where the change differs enough to be worth writing out separately.

Does your site have this problem?

13x checks this and 112 others against your live URL in about 30 seconds. No account, and every finding comes with the fix for your framework.

No signup. Results in 30 seconds.

More ai visibility checks