mariecurie.org.uk

https://www.mariecurie.org.uk/

Ranks Overall #1,465 Astro Showcase #149

Data from Oct 2, 2026, 7:15 PM UTC 3h old Measured once a month · 1 run since Oct 2, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Built with Astro

Uses React

Lighthouse Scores LAB Simulated

Performance

no change

Accessibility

no change

Best Practices

no change

100

SEO

no change

Metrics LAB FIELD

Core Web Vitals: passing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-02 → 2026-09-29), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	5.72 s poor	— 5.72 s – 5.72 s	1.24 s good	92.7% 4.8% 2.5%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	144 ms good	87.8% 10% 2.2%
CLS CWV Cumulative Layout Shift	0.030 good	— 0.030 – 0.030	0 good	98.8% 0.5% 0.8%
TBT Total Blocking Time	523 ms needs work	— 523 ms – 523 ms	n/a	—
FCP First Contentful Paint	4.07 s poor	— 4.07 s – 4.07 s	988 ms good	89.8% 7% 3.2%
Speed Index	4.07 s needs work	— 4.07 s – 4.07 s	n/a	—
TTFB Time to First Byte	617 ms good	— 617 ms – 617 ms	439 ms good	88.9% 8.5% 2.7%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

5.72 s poor

— 5.72 s – 5.72 s

1.24 s good

92.7% 4.8% 2.5%

INP CWV Interaction to Next Paint — field only, no lab run can measure it

n/a

—

144 ms good

87.8% 10% 2.2%

CLS CWV Cumulative Layout Shift

0.030 good

— 0.030 – 0.030

0 good

98.8% 0.5% 0.8%

TBT Total Blocking Time

523 ms needs work

— 523 ms – 523 ms

n/a

—

FCP First Contentful Paint

4.07 s poor

— 4.07 s – 4.07 s

988 ms good

89.8% 7% 3.2%

Speed Index

4.07 s needs work

— 4.07 s – 4.07 s

n/a

—

TTFB Time to First Byte

617 ms good

— 617 ms – 617 ms

439 ms good

88.9% 8.5% 2.7%

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 80 ms

resource load delay 17 ms

resource load duration 11 ms

time to first byte 3 ms

LCP LAB Simulated vs LCP FIELD

Lab 5.72 s

Field p75 1.24 s

The lab LCP is 4.61× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	3.14 MB	— 3.14 MB – 3.14 MB
Requests	152	— 152 – 152
Third-party Weight	687 kB	— 687 kB – 687 kB
Third-party CPU	180 ms	— 180 ms – 180 ms
Unused JS	373 kB	— 373 kB – 373 kB
Unused CSS	19.9 kB	— 19.9 kB – 19.9 kB

Metric

Value

Change / range

Trend

Page Weight

3.14 MB

— 3.14 MB – 3.14 MB

Requests

152

— 152 – 152

Third-party Weight

687 kB

— 687 kB – 687 kB

Third-party CPU

180 ms

— 180 ms – 180 ms

Unused JS

373 kB

— 373 kB – 373 kB

Unused CSS

19.9 kB

— 19.9 kB – 19.9 kB

By resource type

Type	Share	Size	Requests
image	44.6%	1.40 MB	27
script	33.3%	1.04 MB	104
document	18.2%	573 kB	1
font	1.7%	52.9 kB	3
other	1.6%	50.4 kB	16
stylesheet	0.6%	19.8 kB	1
Total		3.14 MB	152

Third parties 3 entities

Entity	Transfer	Size	Main thread Simulated
8x8.com	script	254 kB	28 ms
Optanon	scriptother	226 kB	48 ms
Google Tag Manager	script	207 kB	105 ms
Total		687 kB	180 ms

Entity

Transfer

Size

Main thread Simulated

8x8.com

script

254 kB

28 ms

Optanon

scriptother

226 kB

48 ms

Google Tag Manager

script

207 kB

105 ms

Total

687 kB

180 ms

Page health

Metric	Value	Change / range
Main Thread Work	2.65 s	— 2.65 s – 2.65 s
Long Tasks	10	— 10 – 10
DOM Elements	887	— 887 – 887
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	57	— 57 – 57
A11y Failures	3	— 3 – 3
A11y Failing Nodes	3	— 3 – 3

Metric

Value

Change / range

Trend

Main Thread Work

2.65 s

— 2.65 s – 2.65 s

Long Tasks

— 10 – 10

DOM Elements

887

— 887 – 887

Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)

— 57 – 57

A11y Failures

— 3 – 3

A11y Failing Nodes

— 3 – 3

Main thread work

Task	Share	Duration Simulated
script evaluation	46%	1.23 s
other	30%	806 ms
script parse compile	10%	276 ms
style layout	6%	170 ms
paint composite render	3%	80 ms
parse HTML	3%	76 ms
garbage collection	0%	11 ms
Total		2.65 s

Task

Time

Duration Simulated

script evaluation

46%

1.23 s

other

30%

806 ms

script parse compile

10%

276 ms

style layout

170 ms

paint composite render

80 ms

parse HTML

76 ms

garbage collection

11 ms

Total

2.65 s

Axe violations axe-core 4.13.0, full rule set

57 violating nodes across 4 rules, 862 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

moderate region — All page content should be contained by landmarks 54 nodes

Offending elements (5 of 54)

.x1bm7a04 > div:nth-child(1)

<div style="border:0;clip:rect(0 0 0 0);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;white-space:nowrap">Home</div>

.x1ed6fcf > .xyynv0s.x16vua25.xblkxjs

<p class="x1ghz6dp xu20wam x1kpy6jm xyynv0s x16vua25 xblkxjs x1289nlq x1no40vr x1h4wwuj x1fzhlzt" data-section-type="Text" data-component-type="Text">0800 090 2309</p>

body > div:nth-child(5)
```
<div>
```

.xqaanda > div > div:nth-child(1)

<div style="border:0;clip:rect(0 0 0 0);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;white-space:nowrap">Donation type</div>

.xc5w3nw.x1ve325t[data-component-type="Background"]:nth-child(2) > .xt970qd.xaodldi.x1mi5jdu
```
<div class="x78zum5 xdt5ytf xaodldi x1mi5jdu xh8yej3 xt970qd">
```

moderate heading-order — Heading levels should only increase by one 1 node

Offending element

h6

<h6 class="xtv54pw xt8xbzj x1ghz6dp x1no40vr xh9l5ic x10sgnkw x1itdbps x2xn3en x1w2vvpw" data-section-type="ShareBar" data-component-type="Title">Share this page</h6>

moderate meta-viewport — Zooming and scaling must not be disabled 1 node
Offending element
1. meta[name="viewport"]
```
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
```

serious nested-interactive — Interactive controls must not be nested 1 node

Offending element

div[role="button"]

<div tabindex="-1" role="button" data-section-type="DonatePanelCard" data-component-type="Card" class="x2j3ixl xwmmdgj x1tmrll2 xu6drv2 x1y0btm7 xdh2fpr x1ypdohk x78zum5 xdt5ytf xgoesnc x1a2a7pz xb3r…

Accessibility failures 3 of 29 audits

heading-order — Heading elements are not in a sequentially-descending order 1 node
meta-viewport — `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. 1 node
label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Best Practices failures 1 of 19 audits

image-size-responsive — Serves images with low resolution 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-09-26	1.25 s	144 ms	989 ms	441 ms
2026-09-19	1.27 s	137 ms	1.01 s	471 ms
2026-09-12	1.27 s	138 ms	1.02 s	472 ms
2026-09-05	1.30 s	143 ms	1.07 s	517 ms
2026-08-29	1.26 s	140 ms	1.02 s	530 ms
2026-08-22	1.28 s	138 ms	1.05 s	515 ms
2026-08-15	1.28 s	138 ms	1.08 s	501 ms
2026-08-08	1.28 s	131 ms	1.05 s	491 ms
2026-08-01	1.30 s	126 ms	1.07 s	470 ms
2026-07-25	1.31 s	133 ms	1.07 s	506 ms
2026-07-18	1.31 s	139 ms	1.06 s	509 ms
2026-07-11	1.30 s	143 ms	1.06 s	502 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

1.25 s

144 ms

989 ms

441 ms

2026-09-19

1.27 s

137 ms

1.01 s

471 ms

2026-09-12

1.27 s

138 ms

1.02 s

472 ms

2026-09-05

1.30 s

143 ms

1.07 s

517 ms

2026-08-29

1.26 s

140 ms

1.02 s

530 ms

2026-08-22

1.28 s

138 ms

1.05 s

515 ms

2026-08-15

1.28 s

138 ms

1.08 s

501 ms

2026-08-08

1.28 s

131 ms

1.05 s

491 ms

2026-08-01

1.30 s

126 ms

1.07 s

470 ms

2026-07-25

1.31 s

133 ms

1.07 s

506 ms

2026-07-18

1.31 s

139 ms

1.06 s

509 ms

2026-07-11

1.30 s

143 ms

1.06 s

502 ms

Runs

Every stored run for this URL, newest first.

When	Scores	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 2, 2026, 7:15 PM UTC		56	5.72 s	0.030	523 ms	3.14 MB	3/3	±6	2,495 0%	42.6s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐇 Unthrottled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 3 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 3 of 29 audits

Best Practices failures 1 of 19 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD