coachbox.app

Ranks Overall #1,014 Astro Showcase #71

Data from Oct 2, 2026, 6:47 AM UTC 16h 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

This URL redirects to https://coachbox.app/en/.

The site’s front door pointing at the page it serves there — a locale or CMS landing path, not a move. The origin is still the address of the site, so history stays under it rather than forking to a path that depends on where the measurement ran. Lighthouse follows the redirect, so the numbers below describe the page actually served; the only cost is an extra hop on each run.

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 7.2.8

Cl Hosted by CloudFront

Lighthouse Scores LAB Simulated

Performance

no change

Accessibility

no change

100

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), origin-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	39.17 s poor	— 39.17 s – 39.17 s	1.32 s good	92.1% 4.3% 3.6%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	137 ms good	88.2% 10.4% 1.4%
CLS CWV Cumulative Layout Shift	0.017 good	— 0.017 – 0.017	0 good	97.7% 1.5% 0.9%
TBT Total Blocking Time	183 ms good	— 183 ms – 183 ms	n/a	—
FCP First Contentful Paint	2.96 s needs work	— 2.96 s – 2.96 s	1.12 s good	87.8% 8.3% 4%
Speed Index	4.63 s needs work	— 4.63 s – 4.63 s	n/a	—
TTFB Time to First Byte	694 ms good	— 694 ms – 694 ms	468 ms good	89.5% 7.7% 2.8%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

39.17 s poor

— 39.17 s – 39.17 s

1.32 s good

92.1% 4.3% 3.6%

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

n/a

—

137 ms good

88.2% 10.4% 1.4%

CLS CWV Cumulative Layout Shift

0.017 good

— 0.017 – 0.017

0 good

97.7% 1.5% 0.9%

TBT Total Blocking Time

183 ms good

— 183 ms – 183 ms

n/a

—

FCP First Contentful Paint

2.96 s needs work

— 2.96 s – 2.96 s

1.12 s good

87.8% 8.3% 4%

Speed Index

4.63 s needs work

— 4.63 s – 4.63 s

n/a

—

TTFB Time to First Byte

694 ms good

— 694 ms – 694 ms

468 ms good

89.5% 7.7% 2.8%

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 947 ms

resource load duration 221 ms

time to first byte 185 ms

resource load delay 13 ms

LCP LAB Simulated vs LCP FIELD

Lab 39.17 s

Field p75 1.32 s

The lab LCP is 29.67× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	8.47 MB	— 8.47 MB – 8.47 MB
Requests	28	— 28 – 28
Third-party Weight	406 kB	— 406 kB – 406 kB
Third-party CPU	103 ms	— 103 ms – 103 ms
Unused JS	145 kB	— 145 kB – 145 kB
Unused CSS	0 B	— 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

8.47 MB

— 8.47 MB – 8.47 MB

Requests

— 28 – 28

Third-party Weight

406 kB

— 406 kB – 406 kB

Third-party CPU

103 ms

— 103 ms – 103 ms

Unused JS

145 kB

— 145 kB – 145 kB

Unused CSS

0 B

— 0 B – 0 B

By resource type

Type	Share	Size	Requests
image	94.8%	8.01 MB	15
script	3.8%	322 kB	3
font	0.6%	48.5 kB	1
document	0.5%	39.8 kB	1
stylesheet	0.4%	31.7 kB	5
other	<0.1%	348 B	2
Total		8.47 MB	28

Third parties 4 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	316 kB	103 ms
Google Fonts	font	49.4 kB	0 ms
unsplash.com		41.0 kB	0 ms
Google Analytics		48 B	0 ms
Total		406 kB	103 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

316 kB

103 ms

Google Fonts

font

49.4 kB

0 ms

unsplash.com

41.0 kB

0 ms

Google Analytics

48 B

0 ms

Total

406 kB

103 ms

Page health

Metric	Value	Change / range
Main Thread Work	1.31 s	— 1.31 s – 1.31 s
Long Tasks	5	— 5 – 5
DOM Elements	1,780	— 1,780 – 1,780
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	1	— 1 – 1
A11y Failures	1	— 1 – 1
A11y Failing Nodes	9	— 9 – 9

Metric

Value

Change / range

Trend

Main Thread Work

1.31 s

— 1.31 s – 1.31 s

Long Tasks

— 5 – 5

DOM Elements

1,780

— 1,780 – 1,780

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

— 1 – 1

A11y Failures

— 1 – 1

A11y Failing Nodes

— 9 – 9

Main thread work

Task	Share	Duration Simulated
script evaluation	29%	382 ms
other	29%	377 ms
style layout	26%	336 ms
script parse compile	6%	82 ms
paint composite render	6%	80 ms
parse HTML	4%	51 ms
Total		1.31 s

Task

Time

Duration Simulated

script evaluation

29%

382 ms

other

29%

377 ms

style layout

26%

336 ms

script parse compile

82 ms

paint composite render

80 ms

parse HTML

51 ms

Total

1.31 s

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 1580 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious aria-hidden-focus — ARIA hidden element must not be focusable or contain focusable elements 1 node
Offending element
1. .fsc-slide[data-clone="true"][aria-label="Exercise demos"]
```
<div class="fsc-slide" aria-roledescription="slide" aria-label="Exercise demos" data-astro-cid-kkz4umkn="" data-clone="true" aria-hidden="true">
```

Accessibility failures 1 of 30 audits

target-size — Touch targets do not have sufficient size or spacing. 9 nodes

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	1.39 s	140 ms	1.15 s	470 ms
2026-09-19	1.39 s	130 ms	1.20 s	504 ms
2026-09-12	1.41 s	140 ms	1.22 s	528 ms
2026-09-05	1.41 s	135 ms	1.20 s	548 ms
2026-08-29	1.36 s	128 ms	1.14 s	494 ms
2026-08-22	1.56 s	131 ms	1.20 s	571 ms
2026-08-15	1.61 s	124 ms	1.26 s	666 ms
2026-08-08	1.51 s	115 ms	1.24 s	616 ms
2026-08-01	1.50 s	120 ms	1.20 s	598 ms
2026-07-25	1.43 s	112 ms	1.15 s	494 ms
2026-07-18	1.41 s	105 ms	1.06 s	386 ms
2026-07-11	1.49 s	105 ms	1.13 s	481 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

1.39 s

140 ms

1.15 s

470 ms

2026-09-19

1.39 s

130 ms

1.20 s

504 ms

2026-09-12

1.41 s

140 ms

1.22 s

528 ms

2026-09-05

1.41 s

135 ms

1.20 s

548 ms

2026-08-29

1.36 s

128 ms

1.14 s

494 ms

2026-08-22

1.56 s

131 ms

1.20 s

571 ms

2026-08-15

1.61 s

124 ms

1.26 s

666 ms

2026-08-08

1.51 s

115 ms

1.24 s

616 ms

2026-08-01

1.50 s

120 ms

1.20 s

598 ms

2026-07-25

1.43 s

112 ms

1.15 s

494 ms

2026-07-18

1.41 s

105 ms

1.06 s

386 ms

2026-07-11

1.49 s

105 ms

1.13 s

481 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, 6:47 AM UTC		64	39.17 s	0.017	183 ms	8.47 MB	3/3	±4	2,476 0%	40.2s	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 4 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 1 of 30 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD