kozen.or.jp

https://kozen.or.jp/

Ranks Overall #1,476 Built Awesome #991

Data from Oct 4, 2026, 4:35 AM UTC 4d old Measured once a week · 7 runs since Aug 21, 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

Uses Font Awesome 6.1.1

Hosted by Self-hosted

Lighthouse Scores LAB Simulated

Performance

↓ -4 (-6.3%)

Accessibility

no change

100

Best Practices

no change

100

SEO

no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric	Lab Simulated
LCP CWV (estimate) Largest Contentful Paint	11.18 s poor	↓ -10 ms (-0.1%) 6.42 s – 11.24 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—
CLS CWV (estimate) Cumulative Layout Shift	0 good	→ no change 0 – 0
TBT Total Blocking Time	156 ms good	↑ +54 ms (+52.9%) 70 ms – 179 ms
FCP First Contentful Paint	4.60 s poor	↑ +973 ms (+26.8%) 3.26 s – 4.64 s
Speed Index	6.21 s poor	↑ +850 ms (+15.9%) 3.71 s – 6.24 s
TTFB Time to First Byte	816 ms needs work	↑ +70 ms (+9.4%) 746 ms – 816 ms

Metric

Lab Simulated

Value

Change / range

Trend

LCP CWV (estimate) Largest Contentful Paint

11.18 s poor

↓ -10 ms (-0.1%) 6.42 s – 11.24 s

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

n/a

—

CLS CWV (estimate) Cumulative Layout Shift

0 good

→ no change 0 – 0

TBT Total Blocking Time

156 ms good

↑ +54 ms (+52.9%) 70 ms – 179 ms

FCP First Contentful Paint

4.60 s poor

↑ +973 ms (+26.8%) 3.26 s – 4.64 s

Speed Index

6.21 s poor

↑ +850 ms (+15.9%) 3.71 s – 6.24 s

TTFB Time to First Byte

816 ms needs work

↑ +70 ms (+9.4%) 746 ms – 816 ms

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 1.93 s

resource load duration 225 ms

time to first byte 220 ms

resource load delay 11 ms

Page weight

Metric	Value	Change / range
Page Weight	1.89 MB	↓ -2.6 kB (-0.1%) 1.88 MB – 1.89 MB
Requests	32	↑ +1 (+3.2%) 31 – 32
Third-party Weight	1.40 MB	↑ +2.2 kB (+0.2%) 1.40 MB – 1.40 MB
Third-party CPU	56 ms	↑ +4 ms (+7%) 42 ms – 63 ms
Unused JS	95.7 kB	↓ -638 B (-0.7%) 93.7 kB – 96.3 kB
Unused CSS	41.0 kB	→ no change 41.0 kB – 41.1 kB

Metric

Value

Change / range

Trend

Page Weight

1.89 MB

↓ -2.6 kB (-0.1%) 1.88 MB – 1.89 MB

Requests

↑ +1 (+3.2%) 31 – 32

Third-party Weight

1.40 MB

↑ +2.2 kB (+0.2%) 1.40 MB – 1.40 MB

Third-party CPU

56 ms

↑ +4 ms (+7%) 42 ms – 63 ms

Unused JS

95.7 kB

↓ -638 B (-0.7%) 93.7 kB – 96.3 kB

Unused CSS

41.0 kB

→ no change 41.0 kB – 41.1 kB

By resource type

Type	Share	Size	Requests
image	74.3%	1.40 MB	16
script	11.7%	221 kB	6
font	10.3%	194 kB	3
stylesheet	2.5%	46.7 kB	4
document	1.2%	22.0 kB	1
other	<0.1%	613 B	1
Total		1.89 MB	32

Third parties 4 entities

Entity	Transfer	Size	Main thread Simulated
kusarasenai.com	image	1.02 MB	0 ms
Cloudflare CDN	font	197 kB	0 ms
Google Tag Manager	script	170 kB	56 ms
Google Fonts		14.9 kB	0 ms
Total		1.40 MB	56 ms

Entity

Transfer

Size

Main thread Simulated

kusarasenai.com

image

1.02 MB

0 ms

Cloudflare CDN

font

197 kB

0 ms

Google Tag Manager

script

170 kB

56 ms

Google Fonts

14.9 kB

0 ms

Total

1.40 MB

56 ms

Page health

Metric	Value	Change / range
Main Thread Work	895 ms	↓ -77 ms (-7.9%) 790 ms – 1.19 s
Long Tasks	3	→ no change 3 – 4
DOM Elements	355	→ no change 355 – 355
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	20	→ no change 20 – 20
A11y Failures	2	→ no change 2 – 2
A11y Failing Nodes	18	→ no change 18 – 18

Metric

Value

Change / range

Trend

Main Thread Work

895 ms

↓ -77 ms (-7.9%) 790 ms – 1.19 s

Long Tasks

→ no change 3 – 4

DOM Elements

355

→ no change 355 – 355

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

→ no change 20 – 20

A11y Failures

→ no change 2 – 2

A11y Failing Nodes

→ no change 18 – 18

Main thread work

Task	Share	Duration Simulated
script evaluation	31%	274 ms
other	29%	256 ms
style layout	26%	228 ms
script parse compile	6%	58 ms
parse HTML	6%	53 ms
paint composite render	3%	26 ms
Total		895 ms

Task

Time

Duration Simulated

script evaluation

31%

274 ms

other

29%

256 ms

style layout

26%

228 ms

script parse compile

58 ms

parse HTML

53 ms

paint composite render

26 ms

Total

895 ms

Axe violations axe-core 4.13.0, full rule set

20 violating nodes across 4 rules, 476 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious link-name — Links must have discernible text 11 nodes

Offending elements (5 of 11)

.pickup_content__li.fadeInDown:nth-child(1) > .pickup_content__link.no-icon

<a class="pickup_content__link no-icon" href="https://kozen.or.jp/%e4%bb%8f%e4%ba%8b%ef%bc%88%e8%91%ac%e5%84%80%e3%80%81%e6%b3%95%e4%ba%8b%ef%bc%89%e3%81%ae%e7%96%91%e5%95%8f/">

.delay-0_2s > .pickup_content__link.no-icon

<a class="pickup_content__link no-icon" href="https://kozen.or.jp/%e4%bb%8f%e6%95%99%e5%85%a5%e9%96%80%e8%ac%9b%e5%ba%a7/">

.delay-0_4s > .pickup_content__link.no-icon

<a class="pickup_content__link no-icon" href="https://kozen.or.jp/%e5%bf%83%e3%81%ae%e6%82%a9%e3%81%bf%ef%bc%88%e4%bb%8f%e6%95%99x%e5%bf%83%e7%90%86%e5%ad%a6%ef%bc%89%e3%81%be%e3%81%a8%e3%82%81/">

.delay-0_6s > .pickup_content__link.no-icon

<a class="pickup_content__link no-icon" href="https://kozen.or.jp/%e6%ad%a6%e7%94%b0%e6%ad%a3%e6%96%87%e3%81%ae%e4%bb%8f%e5%bf%83%e3%83%81%e3%83%a3%e3%83%b3%e3%83%8d%e3%83%ab/">

.pickup_content__link.no-icon[href$="lab/"]

<a class="pickup_content__link no-icon" href="/lab/">

serious color-contrast — Elements must meet minimum color contrast ratio thresholds 7 nodes
Offending elements (5 of 7)
1. .stk-pd-s.has-background.wp-block-group:nth-child(3) > .wp-block-group__inner-container.wp-block-group-is-layout-flow.is-layout-flow > .wp-block-columns.wp-container-core-columns-is-layout-8f761849.wp-block-columns-is-layout-flex > .wp-block-column.wp-block-column-is-layout-flow.is-layout-flow > .cat_postlist.typecard > .cat_postlist__ul > .cat_postlist__li:nth-child(1) > .cat_postlist__link.no-icon[href$="gps/"] > .postbody.archives_post__meta > time
```
<time class="time__date gf">2025.09.08</time>
```
2. .stk-pd-s.has-background.wp-block-group:nth-child(3) > .wp-block-group__inner-container.wp-block-group-is-layout-flow.is-layout-flow > .wp-block-columns.wp-container-core-columns-is-layout-8f761849.wp-block-columns-is-layout-flex > .wp-block-column.wp-block-column-is-layout-flow.is-layout-flow > .cat_postlist.typecard > .cat_postlist__ul > .cat_postlist__li:nth-child(2) > .cat_postlist__link.no-icon > .postbody.archives_post__meta > time
```
<time class="time__date gf">2025.08.02</time>
```
3. a[href$="koshin/"] > .postbody.archives_post__meta > time
```
<time class="time__date gf">2025.03.03</time>
```
4. .stk-pd-s.has-background.wp-block-group:nth-child(3) > .wp-block-group__inner-container.wp-block-group-is-layout-flow.is-layout-flow > .wp-block-columns.wp-container-core-columns-is-layout-8f761849.wp-block-columns-is-layout-flex > .wp-block-column.wp-block-column-is-layout-flow.is-layout-flow > .cat_postlist.typecard > .cat_postlist__ul > .cat_postlist__li:nth-child(4) > .cat_postlist__link.no-icon > .postbody.archives_post__meta > time
```
<time class="time__date gf">2024.06.19</time>
```
5. .is-style-small.is-horizontal.is-content-justification-left > .is-style-rich_yellow.wp-block-button > .wp-block-button__link.wp-element-button
```
<a class="wp-block-button__link wp-element-button" href="https://kozen.or.jp/%e4%bb%8f%e4%ba%8b%ef%bc%88%e8%91%ac%e5%84%80%e3%80%81%e6%b3%95%e4%ba%8b%ef%bc%89%e3%81%ae%e7%96%91%e5%95%8f/">コチラからどうぞお参り…
```
minor empty-heading — Headings should not be empty 1 node
Offending element
1. section > .is-style-stylenone
```
<h2 class="wp-block-heading is-style-stylenone"></h2>
```
moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
Offending element
1. .stk-hidden_pc
```
<nav class="stk_g_nav fadeIn stk-hidden_pc">
```

Accessibility failures 2 of 23 audits

link-name — Links do not have a discernible name 11 nodes
color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 7 nodes

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 4, 2026, 4:35 AM UTC	59	11.18 s	156 ms	1.89 MB	3/3	±8	2,484 0%	41.6s	Wayback
Sep 27, 2026, 12:21 AM UTC	63	11.19 s	102 ms	1.89 MB	3/3	±2	2,459 -1%	42s	Wayback
Sep 19, 2026, 10:13 PM UTC	58	11.24 s	179 ms	1.89 MB	3/3	±7	2,449 -2%	42.5s	Wayback
Sep 12, 2026, 9:19 PM UTC	70	6.42 s	70 ms	1.89 MB	3/3	±13	2,490 0%	43.6s	Wayback
Sep 5, 2026, 6:04 PM UTC	59	11.13 s	167 ms	1.89 MB	3/3	±9	2,391 -4%	39.6s	Wayback
Aug 29, 2026, 5:06 PM UTC	61	11.16 s	90 ms	1.88 MB	3/3	±8	2,940 +18%	37.9s	Wayback
Aug 21, 2026, 3:03 AM UTC	59	11.20 s	178 ms	1.88 MB	3/3	±12	2,463 -1%	39.8s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB

LCP Subparts LAB 🐇 Unthrottled

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 2 of 23 audits

Hygiene

Measurement log

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled