Page views
1.5k
7d
▼ 2% vs previous 7d
LCP · p75
1.90 s
83% good · 1.5k samples
▼ 2% vs previous 7d
INP · p75
214 ms
72% good · 938 samples
± 0% vs previous 7d
CLS · p75
0.03
91% good · 1.5k samples
± 0% vs previous 7d
FCP · p75
1.60 s
81% good · 1.5k samples
▲ 2% vs previous 7d
TTFB · p75
873 ms
71% good · 1.5k samples
▲ 2% vs previous 7d
Happy page views
63%
12% unhappy · 1.5k 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 57% less engaged time and 77% fewer clicks than ones that loaded in under 2.5 s. Based on 106 slow page views across 4 page types.
Compare fast and slow page views →
Tablet visitors get a much slower INP
p75 INP is 274 ms on tablet against 147 ms on desktop. Tablet is 13% 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 →
This element makes the page jump as it loads
header.site-header
p75 CLS is 0.11 on the 158 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 →
/search/ pages are slow to show their main content
p75 LCP is 2.61 s over 144 full page loads; 9% took over 4 s. Most of the time goes on waiting for the server.
Try: Most of the time passes before the HTML arrives: cache pages at the edge/CDN or speed up the server.
LCP by page and element →
Taps and clicks on this element respond slowly
div.related-articles > a
p75 INP is 222 ms over 133 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 →
Taps and clicks on this element respond slowly
nav.toc > a.toc-link
p75 INP is 235 ms over 128 page views, mostly on /. 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 →
2 more findings
Key presses in this element respond slowly
#search_input
p75 INP is 242 ms over 115 page views, mostly on /. Most of the time goes on running the event handler. 1 more slow element is 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 →
This element makes the page jump as it loads
div.ad-slot
p75 CLS is 0.10 on the 150 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 →
Trend
By device
| Device | Page views | p75 LCP | p75 INP | p75 CLS |
|---|---|---|---|---|
| Mobile | 734 | 2.16 s | 249 ms | 0.04 |
| Desktop | 542 | 1.46 s | 147 ms | 0.03 |
| Tablet | 191 | 2.43 s | 274 ms | 0.01 |
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 | 1.2k | 1.77 | 33.0 s | 58% |
| Needs improvement | 137 | 0.85 | 26.0 s | 58% |
| Poor | 107 | 0.40 | 13.9 s | 39% |
Biggest changes vs previous 7d
| Measure | Previous | Now | Change |
|---|---|---|---|
| p75 LCP · Load delay | 563 ms | 631 ms | ▲ 12% |
| p75 LCP · Render delay | 508 ms | 470 ms | ▼ 7% |
| Avg engaged time | 32.6 s | 31.0 s | ▼ 5% |
| Avg scroll depth | 55% | 57% | ▲ 3% |
| p75 LCP · Load time | 635 ms | 619 ms | ▼ 2% |
| p75 TTFB · Server wait | 812 ms | 831 ms | ▲ 2% |
| p75 LCP | 1.94 s | 1.90 s | ▼ 2% |
| p75 FCP | 1.57 s | 1.60 s | ▲ 2% |