Page views
54
30d
▲ 575% vs previous 30d
LCP · p75
1.88 s
85% good · 54 samples
▲ 54% vs previous 30d
INP · p75
222 ms
68% good · 40 samples
▲ 9% vs previous 30d
CLS · p75
0.02
89% good · 54 samples
▲ 149% vs previous 30d
FCP · p75
1.80 s
74% good · 54 samples
▲ 56% vs previous 30d
TTFB · p75
973 ms
70% good · 54 samples
▲ 85% vs previous 30d
Happy page views
57%
7% unhappy · 54 rated
13% of these page views were in-app (soft) navigations. Those report INP and CLS, but browsers only measure LCP, FCP and TTFB on full page loads, so those three cover fewer page views.
What to fix first
CLS got 149% worse than the previous 30d
p75 CLS is now 0.02. The Vitals tab shows when it changed and which pages it changed on.
CLS over time →
LCP got 54% worse than the previous 30d
p75 LCP is now 1.88 s. The Vitals tab shows when it changed and which pages it changed on.
LCP over time →
Taps and clicks on this element respond slowly
button.menu-toggle
p75 INP is 354 ms over 7 page views, mostly on /articles/5/. 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 333 ms over 6 page views, mostly on /articles/5/. 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 217 ms over 5 page views, mostly on /articles/5/. 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
header.site-header
p75 CLS is 0.21 on the 5 page views where it shifted, mostly on /articles/5/.
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 →
1 more finding
This element makes the page jump as it loads
#onetrust-banner-sdk
p75 CLS is 0.13 on the 4 page views where it shifted, mostly on /articles/5/.
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 →
Based on 54 page views. Findings need at least 5 measured page views each, so more show up as traffic grows (try the 30d range).
Trend
By device
| Device | Page views | p75 LCP | p75 INP | p75 CLS |
|---|---|---|---|---|
| Mobile | 185 | 2.28 s | 291 ms | 0.04 |
| Desktop | 140 | 1.66 s | 125 ms | 0.04 |
| Tablet | 54 | 1.88 s | 222 ms | 0.02 |
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 | 46 | 1.52 | 39.2 s | 54% |
| Needs improvement | 7 | 0.86 | 34.2 s | 62% |
| Poor | 1 | 0.00 | 5.4 s | 49% |
Biggest changes vs previous 30d
| Measure | Previous | Now | Change |
|---|---|---|---|
| p75 CLS | 0.01 | 0.02 | ▲ 149% |
| p75 TTFB · Server wait | 449 ms | 871 ms | ▲ 94% |
| p75 LCP · Load delay | 319 ms | 600 ms | ▲ 88% |
| p75 TTFB | 525 ms | 973 ms | ▲ 85% |
| p75 FCP | 1.15 s | 1.80 s | ▲ 56% |
| p75 LCP · Load time | 321 ms | 501 ms | ▲ 56% |
| p75 LCP | 1.23 s | 1.88 s | ▲ 54% |
| p75 LCP · Render delay | 435 ms | 273 ms | ▼ 37% |
| p75 TTFB · Connect | 72 ms | 50 ms | ▼ 30% |
| Avg engaged time | 44.1 s | 37.9 s | ▼ 14% |
| p75 INP | 204 ms | 222 ms | ▲ 9% |
| Avg scroll depth | 52% | 55% | ▲ 6% |