Avg Scroll Depth %, Microsoft Clarity

Avg Scroll Depth % for Microsoft Clarity stores. Tracked live in Vortex IQ Nerve Centre. How to read it, why it matters, and how to act on it.

Metrics type: Key Metrics • Category: Behaviour Signals

At a glance

Avg Scroll Depth % is the average share of a page that visitors actually scroll through before they leave. Microsoft Clarity captures this from real session behaviour, so a low number is a strong hint that your most important content, offers, or calls to action are sitting below the fold where most people never reach them. For merchants, scroll reach is a free, direct read on whether page layout is doing its job.

What it counts	The average proportion of page height reached across captured sessions in the window.
Sample type	Behavioural session data from Microsoft Clarity (heatmaps and session recordings), refreshed on the standard data refresh.
Why it matters	If visitors rarely scroll deep, key content and conversion prompts placed lower on the page go unseen.
Reading the value	Higher means visitors explore more of the page; lower means content below the fold is being missed.
Currency	percent
Time window	30D vsP
Alert trigger	<50%
Sentiment key	clr_scroll_depth_avg
Roles	owner, marketing

Calculation

Microsoft Clarity records how far down each page a visitor scrolls across captured sessions, then Vortex IQ averages that scroll reach over the selected window to produce a single percentage. No invented weighting is applied; it reflects what Clarity exposes for the pages in scope. See At a glance for the headline definition and the worked example below for a representative reading.

Worked example

A representative reading of Avg Scroll Depth % for a typical merchant on Microsoft Clarity. Suppose your store shows an Avg Scroll Depth of 42% over the 30 days to 12 Mar 26, down from 58% in the prior period. That dip lines up with a homepage redesign that pushed the featured collection lower on the page, so most visitors never see it. Use Vortex Mind to trace the drop back to the layout change and the pages most affected, then ask Ask Viq in plain English which templates lost the most scroll reach so you can reorder the content that matters.

Sibling cards merchants should reference together

Card	Why merchants reach for it
clr_worst_scroll_pages	Pinpoints the individual pages dragging the average down so you can fix layout where it hurts most.
clr_excessive_scrolling_rate	High scroll volume with low reach can signal visitors hunting for content they cannot find.
clr_avg_page_engagement_time	Pairs scroll reach with time on page to separate skimming from genuine engagement.
clr_quick_back_rate	Shallow scroll plus fast exits often points to a mismatch between expectation and page content.
clr_pages_per_session	Shows whether shallow scrolling coincides with visitors moving on or bailing out.

Reconciling against Microsoft Clarity

Where to look in Microsoft Clarity’s own dashboard:

Open the scroll heatmaps for the pages in question and review the Dashboard insights for scroll behaviour. Confirm the period and any device or channel filters match the Vortex IQ profile before comparing.

Why the Vortex IQ value may legitimately differ:

Reason	Direction	What to do
Period boundary. Vortex IQ uses rolling windows by default; Clarity may use calendar periods.	Variable	Match the period range.
Sampling. Clarity may sample sessions on high-traffic sites; Vortex IQ reads what Clarity exposes.	Variable	Allow for sampling on busy stores.
Filter scope. Profile-level filters (device, channel, bot exclusion) may narrow the Vortex IQ view.	Variable	Match filter settings.

Cross-connector reconciliation: complement with sibling cards in the same category for the full diagnostic picture. For divergence investigations, use Vortex Mind.

Known limitations / merchant FAQs

Q: How often does Avg Scroll Depth % update? The card refreshes on the standard data refresh (typically every 30-60 minutes for live integrations). For real-time signals, force a manual refresh from the dashboard.

Q: Why does my Microsoft Clarity dashboard show a different number? Clarity may sample sessions on high-traffic sites, and its scroll figures can be filtered by device, channel, or bot exclusion. Period boundaries also differ when Vortex IQ uses a rolling window against a Clarity calendar period. Match the period and filters before assuming a real divergence.

Q: Does a short page inflate scroll depth? Yes. Pages that are shorter than the viewport can report very high scroll reach simply because little scrolling is needed. Read this metric alongside the worst scroll-depth pages card to focus on long pages where reach genuinely matters.

Q: Can I customise the alert threshold? Yes, alert thresholds are configurable per profile in the Alert Rules tab. Adjust to match your business baseline rather than relying on the generic default.

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Tracked live in Vortex IQ Nerve Centre

Avg Scroll Depth % is one of hundreds of KPI pulses Vortex IQ tracks across Microsoft Clarity and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English.

Start for free or book a demo to see this metric running on your own data.