JavaScript SEO infographic: three pills for crawl, render and index, a card of things that are safe with JavaScript (real links, History API, titles, structured data), a card of risky things (noindex, canonical changes, soft 404s, dynamic rendering), and three steps on what to do.

Oct 5, 2026

JavaScript SEO: Can Google Crawl JS? (Infographic)

How Google handles JavaScript sites: crawl, render and index, what's safe to do with JavaScript, what's risky, and why server-side rendering still helps.

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<a href="https://searchinsider.io/infographics/javascript-seo"><img src="https://searchinsider.io/research/javascript-seo/javascript-seo-infographic.png" alt="JavaScript SEO infographic: three pills for crawl, render and index, a card of things that are safe with JavaScript (real links, History API, titles, structured data), a card of risky things (noindex, canonical changes, soft 404s, dynamic rendering), and three steps on what to do." style="max-width:680px;width:100%;height:auto;" /></a><p>Source: <a href="https://searchinsider.io/infographics/javascript-seo">JavaScript SEO infographic</a> by Search Insider.</p>

Can Google crawl JavaScript sites?

The short answer: Yes, but in three phases: crawl, render, then index. Pages wait in a render queue, and anything Google can't render, it can't see. Server-side or static rendering makes your content visible from the first request.

Based on Google Search Central.

What it shows

Google processes JavaScript sites in three phases: crawling, rendering and indexing.
Pages with a 200 status are queued for rendering, which can take a few seconds or longer. Non-200 pages may not be rendered.
Google renders with an evergreen version of Chromium.
Google can generally only crawl links that are a elements with an href attribute.
If the original HTML has noindex, Google may skip rendering, so removing it with JavaScript may not work.
Dynamic rendering is a workaround; Google recommends server-side rendering, static rendering or hydration.

What to do

Architecture: Use server-side rendering, static rendering or hydration.
Links: Make every link a real a href and every view its own URL.
Testing: Check pages with URL Inspection.

The walkthrough

Can Google crawl JavaScript?

Yes. Google processes JavaScript web apps in three main phases: crawling, rendering and indexing ^[1]. It runs JavaScript with an evergreen version of Chromium ^[1].

How long does Google take to render JavaScript?

Googlebot queues pages with a 200 status code for rendering unless a robots meta tag or header says not to index them ^[1]. A page may wait a few seconds, but it can take longer ^[1]. Pages with a non-200 status, such as 404 error pages, might not be rendered at all ^[1].

How should JavaScript sites handle links?

Google can generally only crawl a link if it's an a element with an href attribute ^[2]. Links built from other elements or JavaScript click handlers alone aren't recommended ^[2]. Use the History API for routing between views rather than URL fragments ^[1].

Can you set titles and structured data with JavaScript?

Yes. You can use JavaScript to set or change the title element and meta description ^[1], and to generate JSON-LD structured data and inject it into the page ^[1].

What JavaScript mistakes hurt SEO?

Putting noindex in the original HTML: Google may skip rendering, so removing it with JavaScript may not work ^[1]. Changing the canonical URL with JavaScript to something different from the original HTML ^[1]. Returning error views with a 200 status: use a JavaScript redirect to a URL that returns 404, or add noindex to error pages ^[1].

Is dynamic rendering still recommended?

No. Google calls dynamic rendering a workaround and not a long-term solution, and recommends server-side rendering, static rendering or hydration instead ^[3]. Server-side or pre-rendering also makes sites faster for users and crawlers ^[1].

How do you test what Google sees on a JavaScript page?

Use the URL Inspection tool in Search Console or the Rich Results Test to see the rendered page ^[1].

Sources

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