Page views
1.2k
7d
▼ 1% vs previous 7d
LCP · p75
2.49 s
75% good · 1.2k samples
▲ 4% vs previous 7d
INP · p75
212 ms
73% good · 744 samples
▼ 2% vs previous 7d
CLS · p75
0.03
89% good · 1.2k samples
▼ 16% vs previous 7d
FCP · p75
2.47 s
59% good · 1.2k samples
▲ 4% vs previous 7d
TTFB · p75
1.33 s
51% good · 1.2k samples
▲ 4% vs previous 7d
Happy page views
57%
15% unhappy · 1.2k rated
What to fix first
Slow page loads cost you engagement
Comparing like with like (the same page type), page views whose main content took over 4 s got 54% less engaged time and 77% fewer clicks than ones that loaded in under 2.5 s. Based on 108 slow page views across 1 page type.
Compare fast and slow page views →
Mobile visitors get a much slower INP
p75 INP is 279 ms on mobile against 137 ms on desktop. Mobile is 48% of your page views.
Try: Test on a real mid-range phone or with CPU throttling: big images, heavy JavaScript and third-party scripts cost far more there.
INP by device →
Tablet visitors get a much slower LCP
p75 LCP is 2.88 s on tablet against 2.02 s on desktop. Tablet is 14% of your page views.
Try: Test on a real mid-range phone or with CPU throttling: big images, heavy JavaScript and third-party scripts cost far more there.
LCP by device →
Taps and clicks on this element respond slowly
#onetrust-accept-btn-handler
p75 INP is 216 ms over 182 page views, mostly on /search/. Most of the time goes on running the event handler.
Try: The event handler itself is slow: do less work in it, or yield (scheduler.yield / setTimeout) before the heavy part.
INP by element →
This element makes the page jump as it loads
header.site-header
p75 CLS is 0.10 on the 130 page views where it shifted, mostly on /search/.
Try: Reserve its space before it arrives: width and height (or aspect-ratio) on images and embeds, a min-height for content inserted later, and font-display with matched fallback metrics for web fonts.
CLS by element →
This element makes the page jump as it loads
#onetrust-banner-sdk
p75 CLS is 0.11 on the 116 page views where it shifted, mostly on /search/.
Try: Reserve its space before it arrives: width and height (or aspect-ratio) on images and embeds, a min-height for content inserted later, and font-display with matched fallback metrics for web fonts.
CLS by element →
3 more findings
This element makes the page jump as it loads
ul.product-grid
p75 CLS is 0.11 on the 104 page views where it shifted, mostly on /search/. 1 more element that shifts is in the Vitals tab.
Try: Reserve its space before it arrives: width and height (or aspect-ratio) on images and embeds, a min-height for content inserted later, and font-display with matched fallback metrics for web fonts.
CLS by element →
Taps and clicks on this element respond slowly
nav.toc > a.toc-link
p75 INP is 250 ms over 101 page views, mostly on /search/. Most of the time goes on running the event handler.
Try: The event handler itself is slow: do less work in it, or yield (scheduler.yield / setTimeout) before the heavy part.
INP by element →
Key presses in this element respond slowly
#search_input
p75 INP is 203 ms over 94 page views, mostly on /search/. Most of the time goes on running the event handler. 2 more slow elements are in the Vitals tab.
Try: The event handler itself is slow: do less work in it, or yield (scheduler.yield / setTimeout) before the heavy part.
INP by element →
Trend
By device
| Device | Page views | p75 LCP | p75 INP | p75 CLS |
|---|---|---|---|---|
| Mobile | 559 | 2.69 s | 279 ms | 0.03 |
| Desktop | 446 | 2.02 s | 137 ms | 0.04 |
| Tablet | 162 | 2.88 s | 256 ms | 0.03 |
Does speed cost engagement?
Page views grouped by their own LCP. If slower pages get fewer clicks and less reading, that's the cost of slowness.
| LCP | Page views | Clicks per view | Engaged time | Avg scroll |
|---|---|---|---|---|
| Good | 880 | 1.75 | 33.6 s | 57% |
| Needs improvement | 179 | 0.83 | 25.1 s | 57% |
| Poor | 108 | 0.41 | 15.3 s | 40% |
Biggest changes vs previous 7d
| Measure | Previous | Now | Change |
|---|---|---|---|
| Avg engaged time | 29.0 s | 30.6 s | ▲ 5% |
| p75 FCP | 2.37 s | 2.47 s | ▲ 4% |
| p75 TTFB | 1.28 s | 1.33 s | ▲ 4% |
| p75 LCP | 2.40 s | 2.49 s | ▲ 4% |
| p75 LCP · Render delay | 1.14 s | 1.10 s | ▼ 3% |