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Vendor reference · Behavior analytics

Microsoft Clarity

Microsoft's free behavior analytics tool. It records sessions and builds heatmaps of how visitors use a site.

Microsoft Clarity at a glance

Company
Microsoft
Category
Behavior analytics
Tag script
https://www.clarity.ms/tag/<project-id>
Sends data to
www.clarity.ms *.clarity.ms
JavaScript object
clarity
Cookies
4 attributed to Microsoft Clarity in the TagPipes Vendor Registry
Network requests
Clarity /collect

Microsoft documents the /collect requests and the cookies. Its setup page shows the tag code only as an image, so the script URL is listed as commonly installed.

What Microsoft Clarity is

Microsoft Clarity records sessions and builds heatmaps. It is installed with a tracking script in the page head, through a platform integration, or through Google Tag Manager.

It keeps a site-specific user ID in the _clck cookie and stitches page views into one session with _clsk.

What marketers use it for

Marketers and UX teams use it to watch session recordings, see heatmaps and spot friction such as rage clicks. It can be linked with Google Analytics.

How to recognize Microsoft Clarity on a site

  1. Open the site in Chrome, open DevTools (F12, or Cmd+Option+I on a Mac) and go to the Network tab.
  2. Reload the page and type clarity.ms/collect into the filter box. Microsoft's setup guide says to look for POST requests to clarity.ms/collect while you interact with the page.
  3. In the Console tab, type typeof clarity and press Enter. If it returns "function", the Clarity script is on the page.
  4. In Application, then Cookies, look for _clck, _clsk, CLID, clid. Some cookies only appear after a consent choice or a specific action.

Cookies associated with Microsoft Clarity

Also attributed to Microsoft Clarity by the TagPipes Vendor Registry: CLID, clid.

Network requests

What TagPipes observed

1.4%

of sites scanned had Microsoft Clarity detected

TagPipes scanned 41,162 public websites between August 11, 2026 and September 13, 2026, loading up to three pages per site in a real browser as a first-time visitor, and matched what loaded against the TagPipes Vendor Registry. That is how TagPipes recognizes Microsoft Clarity: by the hosts its tag loads from and the cookies attributed to it.

Observed TagPipes scan data, not a figure published by Microsoft. Websites of TagPipes customers are excluded and no individual site is named. Snapshot dated September 13, 2026.

Sources

What it is, what it is used for, and its scripts, hosts and JavaScript objects were checked against the vendor documentation above on . The detection rate is TagPipes scan data from September 13, 2026, not a value published by the vendor. Browse all vendors.

Know when a tag stops firing

TagPipes Auditor checks with real browsers that your marketing pixels fire with the right parameters, and alerts you when tracking breaks. Pulse checks how marketing tags behave against your consent banner.

See Auditor See Pulse

TagPipes monitors, configures and reports. It does not determine legal compliance and does not provide legal advice. Output is informational and reflects observed state at the time of observation. Rawsoft's expertise is technology, not law; please confirm any regulatory interpretation with your own counsel.