What do the three map types measure?

Click maps show intent (dead clicks on unclickable elements being the classic find), scroll maps show how far the audience really gets, move maps weakly proxy attention — three instruments, not one.

Should heat maps drive redesigns?

No — they generate hypotheses; segmented recordings explain the anomalies and controlled experiments settle them. Temperature to question to test.

Growth Marketing Glossary

Heat Map

heat mapnoun

Red where attention pools, blue where it never arrives — and the discipline of reading temperature as questions, not answers.

Schematic — attention painted as temperature

Term: Heat Map
Types: Click, move, scroll — different truths
Classic find: The rage-clicked unclickable element
Rule: Maps generate hypotheses, tests settle them

Forms & parts of speech

heat map · noun

Attention as temperature.

"The heat map showed a blazing red spot on a product photo that linked nowhere - the most-wanted click on the page was a dead end."

Definition in plain terms

A heat map aggregates user behavior on a page — clicks, cursor movement, scroll depth — into a temperature overlay: red where interaction pools, blue where it never arrives. It is CRO's most intuitive instrument and its most misread one, because the colors feel like answers while they are, at best, well-organized questions about where attention went and what it expected to find there.

The mechanics

The three map types measure three different things, and conflating them is the rookie error: click maps show where users tap and click — their highest-value pattern being clicks on the unclickable (the product photo, the underlined-looking text, the icon that reads as a button), each one a user request the interface declined, with rage-clicks as the angry subtype; move maps show cursor travel, traditionally sold as attention-by-proxy (the eye-tracking correlation is real but loose — treat as weak evidence); and SCROLL-DEPTH maps show how far down the audience actually gets, the instrument that prices the fold honestly (the average page loses most visitors before the content the team argued hardest about). The reading discipline: segment before believing (mobile and desktop maps are different pages; new-versus-returning, paid-versus-organic pools differently — a blended map averages audiences into fiction), demand sample size (a 200-session heat map is a Rorschach test), and pair the map with SESSION-LEVEL evidence before acting. The workflow that earns the tool its keep: map finds the anomaly (dead clicks on the hero image), recordings explain it (users hunting for a gallery), a HYPOTHESIS-TESTING-grade experiment settles it (make the image open the gallery; measure) — temperature to question to test, never temperature straight to redesign.

When it matters

Heat maps matter at the diagnosis stage of CRO — new landing pages, underperforming templates, post-redesign sanity checks — and as the cheapest argument-settler in design reviews (the fold debate, the carousel debate, the 'users will scroll' assertion, all priced by one scroll map). They matter least as decision-makers: the map proposes, the experiment disposes. The discipline is type-correct reading (click for intent, scroll for reach, move with skepticism), segmented and sufficiently sampled, feeding a hypothesis pipeline rather than a redesign impulse.

Worked example. A B2B landing page converts at 1.9% and the redesign debate is deadlocked on opinions, so the team buys a week of evidence instead. The scroll map prices the page's architecture: 71% of mobile visitors never reach the social-proof section the brand team fought for - it sits below a full-viewport hero. The click map finds two dead-click hotspots: the customer-logo strip (users expect case studies; the logos link nowhere) and a screenshot of the product that 9% of all visitors click, hunting a demo. Recordings confirm the hunts. Three hypotheses go to test, properly powered: hero compressed to put proof in first viewport (+18% form starts, significant), logos linked to one-page case studies (no lift - the click was curiosity, not intent; the map alone would have shipped a dud), and the screenshot replaced with a 90-second interactive demo (+31% demo engagement, +12% conversions). Two wins, one informative miss - and the deadlocked redesign never happened; the page evolved by evidence, one settled question at a time.

Failure modes to watch. Blended maps averaging mobile and desktop into a page nobody saw; 200-session maps read like census data; move maps sold as eye tracking; temperature going straight to redesign without the recording-then-test pipeline; and the informative misses never logged - the map's curiosity clicks shipped as 'user demand'.

Synonyms & antonyms

Synonyms

heat mapheatmapclick map (subtype)

Antonyms

session recording (the why)A/B test (the verdict)

Origin & history

Heat maps borrowed their form from scientific data visualization (the term traces to 1990s financial dashboards), entered web analytics as click-tracking overlays in the mid-2000s, and became CRO's default diagnostic as the tooling commoditized — the craft maturing from admiring the colors to interrogating them.

Etymology: source.

Usage trends

Search interest for this term over the last five years:

View interest-over-time on Google Trends →

Common questions

What is a heat map?: A visualization aggregating clicks, cursor movement, or scroll depth into a temperature overlay — red where interaction pools — used to diagnose where attention goes on a page.
What do the three map types measure?: Click maps show intent (dead clicks on unclickable elements being the classic find), scroll maps show how far the audience really gets, move maps weakly proxy attention — three instruments, not one.
Should heat maps drive redesigns?: No — they generate hypotheses; segmented recordings explain the anomalies and controlled experiments settle them. Temperature to question to test.

Related tools & calculators

toolA/B test sample size

Resources & people to follow

referenceNielsen Norman Group — heat-map visualizations
referenceEye-tracking vs mouse-tracking correlation research
referenceRGM analysis — the map proposes, the experiment disposes; segment before believing

Curated, non-competitor resources verified per term.

Related training

modulePerformance marketing

Disciplines

Areas of marketing where heat map is a core concern:

Performance marketingGrowth strategy

Sources

trendsGoogle Trends — "heatmap"