Microsoft Clarity Explained: Free Heatmaps & Session Recordings

Microsoft Clarity is a free behaviour-analytics tool offering heatmaps, session recordings and metrics like rage-clicks and dead-clicks — showing how visitors really interact with your pages.

What the project ID means

Clarity identifies your site with a short project ID (e.g. tsv7z9kr88), loaded from clarity.ms/tag/<id>. In GTM it’s usually added via the official Microsoft Clarity template.

Why it’s popular

• Completely free, with no traffic limits
• Session recordings to watch real journeys
• Heatmaps for clicks and scroll depth
• Integrates with GA4

It’s privacy-conscious and lightweight, which is why so many sites run it alongside GA4.

How to check yours is working

Run your site through our free Tag Explorer tool — it shows every tag on the page, nested under its GTM container, with the tracking IDs. To confirm a tag actually fires, use GTM’s Preview mode or your browser’s DevTools Network tab.

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Part of the Shipwreck Studio Tag Guide. Scan any page with Tag Explorer to see its full tag tree and spot duplicates.