Page views
36
7d
▼ 22% vs previous 7d
LCP · p75
2.11 s
83% good · 36 samples
▲ 37% vs previous 7d
INP · p75
267 ms
72% good · 25 samples
▲ 15% vs previous 7d
CLS · p75
0.03
86% good · 36 samples
▲ 25% vs previous 7d
FCP · p75
1.37 s
83% good · 36 samples
▲ 14% vs previous 7d
TTFB · p75
745 ms
78% good · 36 samples
▲ 6% vs previous 7d
Happy page views
56%
6% unhappy · 36 rated
What to fix first
LCP got 37% worse than the previous 7d
p75 LCP is now 2.11 s. The Vitals tab shows when it changed and which pages it changed on.
LCP over time →
CLS got 25% worse than the previous 7d
p75 CLS is now 0.03. 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
header.site-header
p75 CLS is 0.16 on the 6 page views where it shifted, mostly on /articles/1/.
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 →
Key presses in this element respond slowly
#search_input
p75 INP is 267 ms over 5 page views, mostly on /articles/1/. 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
div.related-articles > a
p75 INP is 421 ms over 4 page views, mostly on /articles/1/. 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 245 ms over 3 page views, mostly on /articles/1/. 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 →
Based on 36 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 | 17 | 2.38 s | 269 ms | 0.01 |
| Desktop | 13 | 2.15 s | 140 ms | 0.01 |
| Tablet | 6 | 1.52 s | 109 ms | 0.06 |
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 | 30 | 1.83 | 39.6 s | 55% |
| Needs improvement | 5 | 0.80 | 11.3 s | 57% |
| Poor | 1 | 0.00 | 2.1 s | 47% |
Biggest changes vs previous 7d
| Measure | Previous | Now | Change |
|---|---|---|---|
| p75 LCP · Render delay | 255 ms | 73 ms | ▼ 71% |
| p75 TTFB · Connect | 41 ms | 62 ms | ▲ 49% |
| p75 TTFB · TLS | 43 ms | 63 ms | ▲ 46% |
| p75 LCP | 1.54 s | 2.11 s | ▲ 37% |
| p75 LCP · Load delay | 379 ms | 504 ms | ▲ 33% |
| p75 LCP · Load time | 799 ms | 981 ms | ▲ 23% |
| p75 INP · Processing | 105 ms | 120 ms | ▲ 15% |
| p75 INP | 233 ms | 267 ms | ▲ 15% |
| p75 INP · Presentation | 70 ms | 80 ms | ▲ 15% |
| p75 FCP | 1.20 s | 1.37 s | ▲ 14% |
| p75 TTFB · Server wait | 608 ms | 694 ms | ▲ 14% |
| Avg engaged time | 39.5 s | 34.6 s | ▼ 12% |