Does the _cltk cookie need consent?

In the EU and the UK, yes. _cltk 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.

Who sets the _cltk cookie?

_cltk is set by Microsoft Clarity, from Microsoft Corporation. It is in the Analytics category.

How do I block or delete the _cltk cookie?

Visitors can delete _cltk 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

_cltk cookie

Set by Microsoft Clarity.

What it does

This cookie is installed by Microsoft Clarity tool and stores information about how visitors use the website

Cookie name: _cltk
Category: Analytics
Provider: Microsoft Clarity
Vendor: Microsoft Corporation

Consent

Needed in the EU and the UK

_cltk 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 _cltk. 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 _cltk. The ICO treats analytics cookies as non-essential.
CCPA and CPRA (California): Disclose _cltk in your privacy policy and honour opt-out requests, including the Global Privacy Control signal, if the analytics data is shared or sold.

Managing _cltk with a consent banner

A consent banner can keep the script that sets _cltk waiting until the visitor accepts analytics cookies. Kukie.io's cookie scanner finds _cltk 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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