Does the _clck cookie need consent?

In the EU and the UK, yes. _clck is an analytics cookie, so it may be set only after the visitor agrees. Under the CCPA, California residents can opt out if the data is sold or shared.

How long does the _clck cookie last?

_clck usually lasts 1 year. The exact lifetime depends on the site's settings and the version of the script that sets it.

Who sets the _clck cookie?

_clck is set by Microsoft Clarity. It is in the Analytics category.

How do I block or delete the _clck cookie?

Visitors can delete _clck in their browser's cookie settings. On your own website, a consent banner can keep the script that sets it waiting until the visitor accepts analytics cookies. Kukie.io's banner does this for known trackers by default, and for any other script you tag with its category.

Analytics

_clck cookie

Set by Microsoft Clarity.

What it does

Persists the Clarity User ID and preferences.

Cookie name: _clck
Category: Analytics
Provider: Microsoft Clarity
Duration: 1 year
Data source: Kukie.io

Consent

Needed in the EU and the UK

_clck is in the Analytics category. In the EU and the UK, analytics cookies need the visitor's consent before they are set. California's CCPA works differently: it lets residents opt out of the sale or sharing of their personal information.

GDPR and ePrivacy (EU): Prior consent is needed before setting _clck. Analytics cookies are not covered by the strictly necessary exemption; only a few regulators (for example France's CNIL) allow a narrow exemption for first-party audience measurement under strict conditions.
UK GDPR and PECR: Consent is needed before setting _clck. The ICO treats analytics cookies as non-essential.
CCPA and CPRA (California): Disclose _clck in your privacy policy and honour opt-out requests, including the Global Privacy Control signal, if the analytics data is shared or sold.

Managing _clck with a consent banner

A consent banner can keep the script that sets _clck waiting until the visitor accepts analytics cookies. Kukie.io's cookie scanner finds _clck and sorts it into a category. The banner holds back known trackers by default, and any other script you tag with its category waits too.

Learn more about script blocking

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