https://britbooks.co.uk

Performance Alerts
Mobile Score: Score is significantly below the normal range (Z-score: -3.0) -100.0%
Mobile FCP: FCP has been consistently increasing over the last few measurements
Mobile SI: SI has been consistently increasing over the last few measurements
Mobile LCP: LCP has been consistently increasing over the last few measurements
Mobile TTI: TTI has been consistently increasing over the last few measurements
Mobile FCP: FCP is significantly below the normal range (Z-score: -3.0) -100.0%
Mobile LCP: LCP is significantly below the normal range (Z-score: -3.0) -100.0%
Mobile TTI: TTI is significantly below the normal range (Z-score: -3.0) -100.0%
Mobile Size: Size is significantly below the normal range (Z-score: -3.0) -100.0%
Chart Date Range Filter

Mobile Trend Analysis (Latest vs Period Averages)

Metric Current Value 1 Month Trend 3 Month Trend 6 Month Trend
Score 0 — No Data ↘️ Worse
-79.7		 ↘️ Worse
-91.9
FCP 0.00s — No Data ↗️ Better
-0.61s		 ↗️ Better
-0.699s
SI 0.00s — No Data ↗️ Better
-1.011s		 ↗️ Better
-0.803s
LCP 0.00s — No Data ↗️ Better
-0.61s		 ↗️ Better
-0.699s
TTI 0.00s — No Data ↗️ Better
-0.61s		 ↗️ Better
-0.699s
TBT 0.00s — No Data ➡️ Stable
+0s		 ➡️ Stable
+0s
CLS 0.00 — No Data ➡️ Stable
+0.00		 ➡️ Stable
+0.00
Size 0.00Kb — No Data ↗️ Better
-0.583Kb		 ↗️ Better
-0.67Kb

Desktop Trend Analysis (Latest vs Period Averages)

Metric Current Value 1 Month Trend 3 Month Trend 6 Month Trend Stability
Score 0 — No Data ➡️ Stable
+0 		➡️ Stable
+0 		🟢 Stable
FCP 0.00s — No Data ➡️ Stable
+0s 		➡️ Stable
+0s 		🟢 Stable
SI 0.00s — No Data ➡️ Stable
+0s 		➡️ Stable
+0s 		🟢 Stable
LCP 0.00s — No Data ➡️ Stable
+0s 		➡️ Stable
+0s 		🟢 Stable
TTI 0.00s — No Data ➡️ Stable
+0s 		➡️ Stable
+0s 		🟢 Stable
TBT 0.00s — No Data ➡️ Stable
+0s 		➡️ Stable
+0s 		🟢 Stable
CLS 0.00 — No Data ➡️ Stable
+0.00 		➡️ Stable
+0.00 		🟢 Stable
Size 0.00Kb — No Data ➡️ Stable
+0Kb 		➡️ Stable
+0Kb 		🟢 Stable

Mobile Period Averages

Period Score FCP SI LCP TTI TBT CLS Size
3 Months
(15 results)		 79.7 0.61s 1.011s 0.61s 0.61s 0s 0.00 0.583Kb
6 Months
(62 results)		 91.9 0.699s 0.803s 0.699s 0.699s 0s 0.00 0.67Kb

Desktop Period Averages

Period Score FCP SI LCP TTI TBT CLS Size
3 Months
(15 results)		 0 0s 0s 0s 0s 0s 0.00 0Kb
6 Months
(62 results)		 0 0s 0s 0s 0s 0s 0.00 0Kb

Previous Results

Checked On Desktop Score Score FCP SI LCP TTI TBT CLS Size Desktop Screenshot Screenshot
20/08/2025 18:45:32 0 0 0.00s 0.00s 0.00s 0.00s 0.00s 0.00 0.00Kb N/A N/A
20/08/2025 18:31:16 0 0 0.00s 0.00s 0.00s 0.00s 0.00s 0.00 0.00Kb N/A N/A
20/08/2025 18:20:53 0 0 0.00s 0.00s 0.00s 0.00s 0.00s 0.00 0.00Kb N/A N/A
18/08/2025 18:05:19 0 95 0.755s 6.06133s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
16/08/2025 17:49:58 0 100 0.763s 0.763s 0.763s 0.763s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
14/08/2025 17:35:05 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
12/08/2025 17:20:22 0 100 0.76s 0.76s 0.76s 0.76s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
10/08/2025 17:05:22 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
08/08/2025 16:49:51 0 100 0.785s 0.785s 0.785s 0.785s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
06/08/2025 16:36:05 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
04/08/2025 09:32:23 0 100 0.762s 1.26665s 0.762s 0.762s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
02/08/2025 09:16:50 0 100 0.758s 0.95463s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
31/07/2025 09:01:48 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
29/07/2025 08:47:17 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
27/07/2025 08:31:52 0 100 0.784s 0.784s 0.784s 0.784s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
25/07/2025 08:17:09 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
23/07/2025 08:02:02 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
21/07/2025 07:46:44 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
19/07/2025 07:31:18 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
17/07/2025 07:16:32 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
15/07/2025 07:01:35 0 100 0.76s 0.76s 0.76s 0.76s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
13/07/2025 06:46:17 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
11/07/2025 06:31:47 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
09/07/2025 06:16:27 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
07/07/2025 06:01:29 0 100 0.792s 0.792s 0.792s 0.792s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
05/07/2025 05:49:47 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
03/07/2025 05:31:25 0 100 0.761s 0.761s 0.761s 0.761s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
01/07/2025 05:30:13 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
29/06/2025 05:15:12 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
27/06/2025 05:00:10 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
25/06/2025 04:45:12 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
23/06/2025 04:30:15 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
21/06/2025 04:15:30 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
19/06/2025 04:00:24 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
17/06/2025 03:45:16 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
17/06/2025 03:31:19 0 0 0.00s 0.00s 0.00s 0.00s 0.00s 0.00 0.00Kb N/A N/A
15/06/2025 03:16:19 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
13/06/2025 03:01:18 0 100 0.785s 0.785s 0.785s 0.785s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
11/06/2025 02:46:03 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
09/06/2025 02:31:11 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
07/06/2025 02:15:54 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
05/06/2025 02:00:56 0 100 0.76s 0.76s 0.76s 0.76s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
03/06/2025 01:45:56 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
01/06/2025 01:31:13 0 100 0.785s 1.1879s 0.785s 0.785s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
30/05/2025 01:15:59 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
28/05/2025 01:00:51 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
26/05/2025 00:45:45 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
26/05/2025 00:33:43 0 0 0.00s 0.00s 0.00s 0.00s 0.00s 0.00 0.00Kb N/A N/A
24/05/2025 00:19:02 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
22/05/2025 00:03:52 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
19/05/2025 23:48:22 0 100 0.763s 0.763s 0.763s 0.763s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
17/05/2025 23:33:21 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
15/05/2025 23:18:21 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
13/05/2025 23:03:18 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
11/05/2025 22:48:30 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
09/05/2025 22:33:26 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
07/05/2025 22:18:25 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
05/05/2025 22:02:27 0 100 0.784s 0.784s 0.784s 0.784s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
03/05/2025 21:47:17 0 100 0.785s 0.785s 0.785s 0.785s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
01/05/2025 21:32:23 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
29/04/2025 21:17:39 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
27/04/2025 21:02:33 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
25/04/2025 20:46:52 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
23/04/2025 20:31:37 0 100 0.754s 0.754s 0.754s 0.754s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
21/04/2025 20:16:58 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
19/04/2025 18:04:55 0 100 0.761s 0.761s 0.761s 0.761s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
17/04/2025 17:50:27 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
15/04/2025 17:34:38 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
13/04/2025 17:20:18 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
11/04/2025 17:04:57 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
09/04/2025 16:49:38 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
07/04/2025 16:35:06 0 100 0.761s 0.761s 0.761s 0.761s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
05/04/2025 16:19:53 0 100 0.759s 0.759s 0.759s 0.759s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
03/04/2025 16:04:48 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
01/04/2025 15:49:49 0 100 0.787s 0.787s 0.787s 0.787s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
30/03/2025 15:35:11 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
28/03/2025 14:19:58 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
26/03/2025 14:05:39 0 100 0.757s 0.757s 0.757s 0.757s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
24/03/2025 13:50:01 0 100 0.758s 0.758s 0.758s 0.758s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
22/03/2025 13:34:41 0 100 0.755s 0.755s 0.755s 0.755s 0.00s 0.00 0.729Kb N/A Mobile page screenshot
20/03/2025 13:23:37 0 100 0.756s 0.756s 0.756s 0.756s 0.00s 0.00 0.729Kb N/A Mobile page screenshot