Page views
589
24h
▼ 9% vs previous 24h
LCP · p75
1.39 s
92% good · 589 samples
▼ 15% vs previous 24h
INP · p75
146 ms
85% good · 395 samples
▲ 1% vs previous 24h
CLS · p75
0.04
87% good · 589 samples
▲ 39% vs previous 24h
FCP · p75
1.20 s
89% good · 589 samples
▼ 12% vs previous 24h
TTFB · p75
645 ms
82% good · 589 samples
▼ 16% vs previous 24h
Happy page views
73%
8% unhappy · 589 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 58% less engaged time and 78% fewer clicks than ones that loaded in under 2.5 s. Based on 19 slow page views across 2 page types.
Compare fast and slow page views →
CLS got 39% worse than the previous 24h
p75 CLS is now 0.04. The Vitals tab shows when it changed and which pages it changed on.
CLS over time →
This element makes the page jump as it loads
div.ad-slot
p75 CLS is 0.19 on the 62 page views where it shifted, mostly on /.
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
ul.product-grid
p75 CLS is 0.14 on the 58 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
header.site-header
p75 CLS is 0.11 on the 79 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 203 ms over 50 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 →
1 more finding
All three Core Web Vitals pass
p75 LCP 1.39 s, INP 146 ms, CLS 0.04: that's Google's "good" for each. Watch "Biggest changes" for regressions.
Vitals →
Trend
By device
| Device | Page views | p75 LCP | p75 INP | p75 CLS |
|---|---|---|---|---|
| Mobile | 762 | 2.04 s | 268 ms | 0.04 |
| Desktop | 589 | 1.39 s | 146 ms | 0.04 |
| Tablet | 179 | 2.30 s | 293 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 | 542 | 1.63 | 33.7 s | 57% |
| Needs improvement | 25 | 0.76 | 16.6 s | 58% |
| Poor | 22 | 0.41 | 13.4 s | 38% |
Biggest changes vs previous 24h
| Measure | Previous | Now | Change |
|---|---|---|---|
| p75 CLS | 0.03 | 0.04 | ▲ 39% |
| p75 LCP · Load delay | 416 ms | 330 ms | ▼ 21% |
| p75 TTFB · Server wait | 672 ms | 553 ms | ▼ 18% |
| p75 TTFB | 769 ms | 645 ms | ▼ 16% |
| p75 LCP | 1.63 s | 1.39 s | ▼ 15% |
| p75 FCP | 1.37 s | 1.20 s | ▼ 12% |
| p75 LCP · Load time | 496 ms | 530 ms | ▲ 7% |
| Avg engaged time | 31.4 s | 32.2 s | ▲ 3% |