allotmentbook.co.uk

https://www.allotmentbook.co.uk/

Data from Aug 21, 2026, 5:30 PM UTC 2d old

Built Awesome #829 · 1 measurement · since Aug 21, 2026

Core Web Vitals field data, origin-level

Real Chrome users, 28-day window (2026-07-23 → 2026-08-19). This is what Google measures you on.

LCP 771 ms good

INP 43 ms good

CLS 0 good

Scores

Performance

no change

Accessibility

no change

100

Best Practices

no change

100

SEO

no change

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	1.96 s	—	—	1.96 s	1.96 s
CLS Cumulative Layout Shift	0	—	—	0	0
TBT Total Blocking Time	0 ms	—	—	0 ms	0 ms
FCP First Contentful Paint	814 ms	—	—	814 ms	814 ms
Speed Index	814 ms	—	—	814 ms	814 ms
TTFB Time to First Byte	603 ms	—	—	603 ms	603 ms

What LCP is made of observed, unthrottled

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 1.96 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.

element render delay 24 ms

resource load delay 23 ms

resource load duration 21 ms

time to first byte 5 ms

Field data Chrome UX Report, origin-level

Real Chrome users, 28-day trailing window (2026-07-23 → 2026-08-19). This is what Google measures you on.

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	771 ms	good	97.3% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	43 ms	good	98.5% good
CLS CWV	0	good	94.4% good
FCP	624 ms	good	96% good
TTFB	386 ms	good	92.8% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

771 ms

good

97.3% good

INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run

43 ms

good

98.5% good

CLS CWV

good

94.4% good

FCP

624 ms

good

96% good

TTFB

386 ms

good

92.8% good

Lab vs field

Lab LCP 1.96 s · field p75 771 ms · real users are 0.39× faster than the lab.

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending	LCP	INP	FCP	TTFB
2026-08-15	806 ms	40 ms	655 ms	394 ms
2026-08-08	809 ms	39 ms	675 ms	394 ms
2026-08-01	793 ms	35 ms	660 ms	385 ms
2026-07-25	811 ms	39 ms	692 ms	396 ms
2026-07-18	826 ms	39 ms	703 ms	408 ms
2026-07-11	803 ms	39 ms	670 ms	404 ms
2026-07-04	811 ms	42 ms	692 ms	409 ms
2026-06-27	775 ms	39 ms	647 ms	391 ms
2026-06-20	749 ms	30 ms	639 ms	388 ms
2026-06-13	770 ms	28 ms	671 ms	399 ms
2026-06-06	787 ms	29 ms	677 ms	409 ms
2026-05-30	770 ms	30 ms	666 ms	402 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-08-15

806 ms

40 ms

655 ms

394 ms

2026-08-08

809 ms

39 ms

675 ms

394 ms

2026-08-01

793 ms

35 ms

660 ms

385 ms

2026-07-25

811 ms

39 ms

692 ms

396 ms

2026-07-18

826 ms

39 ms

703 ms

408 ms

2026-07-11

803 ms

39 ms

670 ms

404 ms

2026-07-04

811 ms

42 ms

692 ms

409 ms

2026-06-27

775 ms

39 ms

647 ms

391 ms

2026-06-20

749 ms

30 ms

639 ms

388 ms

2026-06-13

770 ms

28 ms

671 ms

399 ms

2026-06-06

787 ms

29 ms

677 ms

409 ms

2026-05-30

770 ms

30 ms

666 ms

402 ms

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	305 kB	—	—	305 kB	305 kB
Requests	28	—	—	28	28
Third-party Weight	291 kB	—	—	291 kB	291 kB
Third-party CPU	2 ms	—	—	2 ms	2 ms
Unused JS	0 B	—	—	0 B	0 B
Unused CSS	0 B	—	—	0 B	0 B

By resource type

image 281 kB · 23 req

other 13.3 kB · 1 req

document 7.2 kB · 1 req

script 3.6 kB · 3 req

third party 291 kB · 23 req

Third parties 3 entities

291 kB transferred, 2 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Firebase 179 kB · 0 ms CPU

Cloudinary 109 kB · 0 ms CPU

Fathom Analytics 3.2 kB · 2 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	413 ms	—	—	413 ms	413 ms
Long Tasks	0	—	—	0	0
DOM Elements	265	—	—	265	265
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset	6	—	—	6	6
A11y Failures	1	—	—	1	1
A11y Failing Nodes	7	—	—	7	7

Main thread work

other 219 ms

style layout 76 ms

paint composite render 71 ms

script evaluation 25 ms

parse HTML 17 ms

script parse compile 4 ms

Axe violations axe-core 4.13.0, full rule set

6 violating nodes across 1 rule, 472 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

minor image-redundant-alt — Alternative text of images should not be repeated as text 6 nodes

Accessibility failures 1 of 14 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

target-size — Touch targets do not have sufficient size or spacing. 7 nodes

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took
Aug 21, 2026, 5:30 PM UTC	99	1.96 s	0	0 ms	305 kB	3/3	±0	2,436	34.5s

When

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Aug 21, 2026, 5:30 PM UTC

1.96 s

0 ms

305 kB

3/3

±0

2,436

34.5s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show allotmentbook.co.uk's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site!

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://www.allotmentbook.co.uk/"></speedlify2-score>