toshin-dev.co.jp

https://www.toshin-dev.co.jp/

Ranks Overall #1,090 Astro Showcase #91

Data from Oct 2, 2026, 7:17 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

Hosted by Cloudflare

Lighthouse Scores LAB Simulated

Performance

no change

100

Accessibility

no change

100

Best Practices

no change

100

SEO

no change

Metrics LAB FIELD

Core Web Vitals: failing 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	14.54 s poor	— 14.54 s – 14.54 s	2.15 s good	80.2% 10.6% 9.2%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	322 ms needs work	62.5% 21.9% 15.6%
CLS CWV Cumulative Layout Shift	0 good	— 0 – 0	0.040 good	84.2% 0.7% 15.1%
TBT Total Blocking Time	478 ms needs work	— 478 ms – 478 ms	n/a	—
FCP First Contentful Paint	3.15 s poor	— 3.15 s – 3.15 s	990 ms good	88.2% 5.3% 6.5%
Speed Index	3.67 s needs work	— 3.67 s – 3.67 s	n/a	—
TTFB Time to First Byte	469 ms good	— 469 ms – 469 ms	354 ms good	89.8% 6% 4.2%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

14.54 s poor

— 14.54 s – 14.54 s

2.15 s good

80.2% 10.6% 9.2%

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

n/a

—

322 ms needs work

62.5% 21.9% 15.6%

CLS CWV Cumulative Layout Shift

0 good

— 0 – 0

0.040 good

84.2% 0.7% 15.1%

TBT Total Blocking Time

478 ms needs work

— 478 ms – 478 ms

n/a

—

FCP First Contentful Paint

3.15 s poor

— 3.15 s – 3.15 s

990 ms good

88.2% 5.3% 6.5%

Speed Index

3.67 s needs work

— 3.67 s – 3.67 s

n/a

—

TTFB Time to First Byte

469 ms good

— 469 ms – 469 ms

354 ms good

89.8% 6% 4.2%

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 644 ms

resource load duration 101 ms

resource load delay 34 ms

time to first byte 9 ms

LCP LAB Simulated vs LCP FIELD

Lab 14.54 s

Field p75 2.15 s

The lab LCP is 6.76× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	32.14 MB	— 32.14 MB – 32.14 MB
Requests	84	— 84 – 84
Third-party Weight	30.80 MB	— 30.80 MB – 30.80 MB
Third-party CPU	109 ms	— 109 ms – 109 ms
Unused JS	301 kB	— 301 kB – 301 kB
Unused CSS	31.9 kB	— 31.9 kB – 31.9 kB

Metric

Value

Change / range

Trend

Page Weight

32.14 MB

— 32.14 MB – 32.14 MB

Requests

— 84 – 84

Third-party Weight

30.80 MB

— 30.80 MB – 30.80 MB

Third-party CPU

109 ms

— 109 ms – 109 ms

Unused JS

301 kB

— 301 kB – 301 kB

Unused CSS

31.9 kB

— 31.9 kB – 31.9 kB

By resource type

Type	Share	Size	Requests
image	95.9%	30.81 MB	22
script	2.2%	696 kB	26
font	1.5%	497 kB	22
stylesheet	0.2%	59.2 kB	8
other	0.2%	51.6 kB	5
document	0.1%	25.7 kB	1
Total		32.14 MB	84

Third parties 3 entities

Entity	Transfer	Size	Main thread Simulated
microcms-assets.io	image	29.96 MB	0 ms
Google Fonts		529 kB	0 ms
Google Tag Manager		310 kB	109 ms
Total		30.80 MB	109 ms

Entity

Transfer

Size

Main thread Simulated

microcms-assets.io

image

29.96 MB

0 ms

Google Fonts

529 kB

0 ms

Google Tag Manager

310 kB

109 ms

Total

30.80 MB

109 ms

Page health

Metric	Value	Change / range
Main Thread Work	7.95 s	— 7.95 s – 7.95 s
Long Tasks	20	— 20 – 20
DOM Elements	1,279	— 1,279 – 1,279
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	1	— 1 – 1

Metric

Value

Change / range

Trend

Main Thread Work

7.95 s

— 7.95 s – 7.95 s

Long Tasks

— 20 – 20

DOM Elements

1,279

— 1,279 – 1,279

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

— 1 – 1

A11y Failures

— 1 – 1

A11y Failing Nodes

— 1 – 1

Main thread work

Task	Share	Duration Simulated
other	65%	5.19 s
script evaluation	22%	1.76 s
style layout	7%	553 ms
paint composite render	2%	148 ms
script parse compile	2%	120 ms
garbage collection	1%	101 ms
parse HTML	1%	77 ms
Total		7.95 s

Task

Time

Duration Simulated

other

65%

5.19 s

script evaluation

22%

1.76 s

style layout

553 ms

paint composite render

148 ms

script parse compile

120 ms

garbage collection

101 ms

parse HTML

77 ms

Total

7.95 s

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 239 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 1 node

Offending element

.banner

<a href="https://www.takashimaya.co.jp/urbancultureaward/awards_2026/" target="_blank" class="banner" data-astro-cid-dffodgks="">

Accessibility failures 1 of 19 audits

label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Best Practices failures 1 of 18 audits

valid-source-maps — Missing source maps for large first-party JavaScript 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Field history 25 weeks

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

Week ending	LCP	INP	CLS	FCP	TTFB
2026-09-26	2.01 s	294 ms	0.050	1.03 s	354 ms
2026-09-19	2.17 s	322 ms	0.050	1.07 s	364 ms
2026-09-12	2.17 s	304 ms	0.050	1.09 s	398 ms
2026-09-05	2.00 s	251 ms	0.050	1.16 s	386 ms
2026-08-29	2.32 s	241 ms	0.050	1.08 s	360 ms
2026-08-22	2.20 s	239 ms	0.040	1.20 s	423 ms
2026-08-15	2.31 s	218 ms	0.050	1.33 s	410 ms
2026-08-08	2.32 s	248 ms	0.050	1.16 s	394 ms
2026-08-01	2.26 s	321 ms	0.060	1.20 s	410 ms
2026-07-25	2.32 s	367 ms	0.060	1.16 s	382 ms
2026-07-18	2.20 s	398 ms	0.060	1.13 s	368 ms
2026-07-11	2.19 s	370 ms	0.060	1.13 s	379 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

2.01 s

294 ms

0.050

1.03 s

354 ms

2026-09-19

2.17 s

322 ms

0.050

1.07 s

364 ms

2026-09-12

2.17 s

304 ms

0.050

1.09 s

398 ms

2026-09-05

2.00 s

251 ms

0.050

1.16 s

386 ms

2026-08-29

2.32 s

241 ms

0.050

1.08 s

360 ms

2026-08-22

2.20 s

239 ms

0.040

1.20 s

423 ms

2026-08-15

2.31 s

218 ms

0.050

1.33 s

410 ms

2026-08-08

2.32 s

248 ms

0.050

1.16 s

394 ms

2026-08-01

2.26 s

321 ms

0.060

1.20 s

410 ms

2026-07-25

2.32 s

367 ms

0.060

1.16 s

382 ms

2026-07-18

2.20 s

398 ms

0.060

1.13 s

368 ms

2026-07-11

2.19 s

370 ms

0.060

1.13 s

379 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, 7:17 PM UTC		56	14.54 s	0	478 ms	32.14 MB	3/3	±19	2,433 -2%	48.6s	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 1 of 19 audits

Best Practices failures 1 of 18 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD