Best Free Website Heatmap Tools

Short answer

Microsoft Clarity is the best completely free heatmap tool — unlimited sessions, click maps, scroll maps, and session recordings. Hotjar has a solid free tier (35 sessions/day). Both take about 10 minutes to install.

What heatmaps show you

A heatmap overlays your website with data about what visitors do:

Click map — where visitors click (and what they click on that has no link — reveals confusion)
Scroll map — how far down visitors scroll (reveals whether your key content is above the fold)
Session recordings — video playback of individual visitor sessions (see exactly what they did)
Rage clicks — where people frantically click something that isn't clickable (reveals broken expectations)

This data often reveals problems that Google Analytics can't: the page has good traffic but visitors scroll right past your call to action without seeing it.

Best free options

Microsoft Clarity — Best for free unlimited use

Completely free with no session limits
Heatmaps, scroll maps, session recordings, rage click detection
Installs with a small code snippet or WordPress plugin
GDPR-compliant
Best for: Most small businesses — it's completely free and excellent

Hotjar — Best free tier with easy setup

Free plan: 35 sessions/day heatmaps and recordings
Very polished interface
Easy setup — paste one code snippet
Paid plans start at $39/month for unlimited
Best for: Sites wanting a polished tool; paid plans worth it for high-traffic sites

Crazy Egg — Best for A/B testing

Starts at $29/month (no free tier worth using)
Adds A/B testing on top of heatmaps
Best for: Businesses actively running conversion optimisation experiments

How to use heatmap data

After collecting 1–2 weeks of data:

Check your homepage scroll map — is your main CTA above where most visitors stop scrolling?
Check click maps — are visitors clicking things that aren't links? (Add links or remove the confusion)
Watch 5–10 session recordings of visitors who didn't convert — where did they get stuck?