Cookiebot CMP (cookiebot.com, part of Usercentrics) combines a monthly cookie scan, a consent banner and automatic script blocking. Its effectiveness stands or falls with a correct integration in “auto-blocking” mode.
Cookiebot works in two modes. In automatic mode (auto-blocking) the script tries to prevent all known trackers before consent by intercepting their execution. This only works if the Cookiebot script really is the first in the head — any script before it escapes its control. In manual mode Cookiebot blocks nothing itself; instead all tags have to be marked with type="text/plain" and a data-cookieconsent attribute, or wired up through the consent API.
The monthly cookie scan is Cookiebot's core function, but it has the usual limits of automatic scanners: it crawls a limited number of subpages, only detects what loads at the time of the scan, and classifies cookies using a database that does not know every niche service. Unknown cookies end up as “unclassified” and have to be categorised manually.
Cookiebot has been part of Usercentrics since 2021. For small websites there is a free tier (up to 50 subpages) that shows the Cookiebot brand in the banner. The paid tiers allow white-labelling and more subpages. Functionally the tiers do not differ in blocking — the decisive factor remains the correct technical integration.
In manual mode Cookiebot blocks nothing by itself — every tag then has to be wired up via the data-cookieconsent attribute or through Google Consent Mode. If this is forgotten, the tracker loads despite a rejection and the legal basis under Section 25(1) TDDDG is missing. Even auto-blocking mode does not reliably catch server-side tags or scripts loaded only after interaction.
The free scan checks the delivered HTML and shows which services are embedded, whether a cookie banner is detected and whether privacy-policy and legal-notice links are present — with context for each finding. It is not a substitute for legal advice.
This text is general information to the best of our knowledge, not legal advice. For an individual case, consult a law firm specialising in IT law.