No, Cookiebot is built so that search engines can crawl and index your site normally, and its impact on page performance is minimal. Here's how that works, and what to check if you notice layout shift or a rendering delay.
SEO and indexing
As Google certified CMP Partner, we work to ensure that Cookiebot does not impact your ranking or indexing:
- Search engine crawlers access your site as if full consent had been given. The cookie banner isn't shown to them, so they can index all your content, including parts that would normally be hidden from a visitor who hasn't accepted certain cookie categories.
- Search engines don't index the text inside the cookie banner itself, so it has no effect on how your site is indexed.
In short, a crawler never "sees" or gets blocked by a Cookiebot banner. Note that some third-party SEO or performance auditing tools may still flag the Cookiebot script in their reports, even though real search engine crawlers aren't affected — you can safely disregard those flags for indexing purposes.
Performance
The Cookiebot script typically loads in under 200ms on average. How it loads depends on several elements, such as location, cache, and your setup:
- Automatic cookie blocking: the script loads synchronously, meaning it loads first and checks every other script on the page before that script is allowed to run. This gives the most complete blocking coverage but can introduce a small, sometimes noticeable delay, since the script evaluates every element added to the page.
- Manual blocking mode: the script can load asynchronously, meaning it loads alongside the rest of your site without holding anything up. This is faster and causes no rendering delay, but you take on responsibility for manually marking which scripts to block.
If you notice a rendering delay with automatic blocking, switching to manual blocking (or combining it with Google Tag Manager) removes that delay and gives you full control over exactly which elements are blocked.
Preventing layout shift
If you have content that's hidden until a visitor gives consent — for example, an embedded video or image — removing it can cause the page layout to shift once consent is given. To prevent this, add placeholder content of the same size so the layout stays stable whether or not consent has been given yet. See Hide and show content based on the visitor's consent for setup steps.
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