shimma.info

Ranks Overall #1,576 Built Awesome #1,042

Data from Oct 4, 2026, 10:46 PM UTC 3d 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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,174, 68% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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

Hosted by Self-hosted

Lighthouse Scores LAB Simulated

Performance

↑ +2 (+2.9%)

Accessibility

no change

Best Practices

no change

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 (2026-09-05 → 2026-10-02), origin-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	16.10 s poor	↑ +9513 ms (+144.4%) significant 6.59 s – 17.08 s	679 ms good	97.9% 1.4% 0.7%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	79 ms good	93.8% 3.8% 2.4%
CLS CWV Cumulative Layout Shift	0 good	↓ -0.037 (-100%) significant 0 – 0.037	0 good	95.7% 1.8% 2.5%
TBT Total Blocking Time	112 ms good	↓ -202 ms (-64.3%) significant 112 ms – 429 ms	n/a	—
FCP First Contentful Paint	2.23 s needs work	↑ +272 ms (+13.9%) significant 1.96 s – 2.31 s	495 ms good	97.8% 1.2% 1%
Speed Index	4.20 s needs work	↑ +1149 ms (+37.7%) significant 3.05 s – 5.08 s	n/a	—
TTFB Time to First Byte	878 ms needs work	↑ +91 ms (+11.6%) significant 787 ms – 878 ms	180 ms good	97.7% 1.4% 0.9%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

16.10 s poor

↑ +9513 ms (+144.4%) significant 6.59 s – 17.08 s

679 ms good

97.9% 1.4% 0.7%

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

n/a

—

79 ms good

93.8% 3.8% 2.4%

CLS CWV Cumulative Layout Shift

0 good

↓ -0.037 (-100%) significant 0 – 0.037

0 good

95.7% 1.8% 2.5%

TBT Total Blocking Time

112 ms good

↓ -202 ms (-64.3%) significant 112 ms – 429 ms

n/a

—

FCP First Contentful Paint

2.23 s needs work

↑ +272 ms (+13.9%) significant 1.96 s – 2.31 s

495 ms good

97.8% 1.2% 1%

Speed Index

4.20 s needs work

↑ +1149 ms (+37.7%) significant 3.05 s – 5.08 s

n/a

—

TTFB Time to First Byte

878 ms needs work

↑ +91 ms (+11.6%) significant 787 ms – 878 ms

180 ms good

97.7% 1.4% 0.9%

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 1.51 s

resource load duration 420 ms

resource load delay 293 ms

time to first byte 141 ms

LCP LAB Simulated vs LCP FIELD

Lab 16.10 s

Field p75 679 ms

The lab LCP is 23.72× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	4.46 MB	↑ +1290.0 kB (+42.1%) 2.59 MB – 4.46 MB
Requests	20	↓ -3 (-13%) significant 20 – 23
Third-party Weight	499 kB	↑ +3.0 kB (+0.6%) 481 kB – 499 kB
Third-party CPU	86 ms	↓ -50 ms (-36.6%) significant 86 ms – 155 ms
Unused JS	218 kB	↑ +4.9 kB (+2.4%) 209 kB – 218 kB
Unused CSS	18.4 kB	↑ +8 B 18.4 kB – 18.4 kB

Metric

Value

Change / range

Trend

Page Weight

4.46 MB

↑ +1290.0 kB (+42.1%) 2.59 MB – 4.46 MB

Requests

↓ -3 (-13%) significant 20 – 23

Third-party Weight

499 kB

↑ +3.0 kB (+0.6%) 481 kB – 499 kB

Third-party CPU

86 ms

↓ -50 ms (-36.6%) significant 86 ms – 155 ms

Unused JS

218 kB

↑ +4.9 kB (+2.4%) 209 kB – 218 kB

Unused CSS

18.4 kB

↑ +8 B 18.4 kB – 18.4 kB

By resource type

Type	Share	Size	Requests
image	83.8%	3.41 MB	7
script	12.6%	515 kB	5
font	1.7%	69.9 kB	2
other	1.1%	46.1 kB	1
stylesheet	0.5%	22.0 kB	2
document	0.2%	8.2 kB	1
Total		4.46 MB	20

Third parties 3 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	473 kB	81 ms
Google Analytics		20.9 kB	5 ms
JSDelivr CDN		4.9 kB	0 ms
Total		499 kB	86 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

473 kB

81 ms

Google Analytics

20.9 kB

5 ms

JSDelivr CDN

4.9 kB

0 ms

Total

499 kB

86 ms

Page health

Metric	Value	Change / range
Main Thread Work	772 ms	↓ -1476 ms (-65.7%) significant 772 ms – 2.25 s
Long Tasks	4	↓ -6 (-60%) significant 4 – 10
DOM Elements	618	↓ -3 (-0.5%) 617 – 621
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	51	→ no change 48 – 51
A11y Failures	4	→ no change 4 – 4
A11y Failing Nodes	51	→ no change 51 – 51

Metric

Value

Change / range

Trend

Main Thread Work

772 ms

↓ -1476 ms (-65.7%) significant 772 ms – 2.25 s

Long Tasks

↓ -6 (-60%) significant 4 – 10

DOM Elements

618

↓ -3 (-0.5%) 617 – 621

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

→ no change 48 – 51

A11y Failures

→ no change 4 – 4

A11y Failing Nodes

→ no change 51 – 51

Main thread work

Task	Share	Duration Simulated
script evaluation	39%	304 ms
other	28%	215 ms
style layout	20%	152 ms
script parse compile	9%	71 ms
parse HTML	1%	11 ms
paint composite render	1%	10 ms
garbage collection	1%	9 ms
Total		772 ms

Task

Time

Duration Simulated

script evaluation

39%

304 ms

other

28%

215 ms

style layout

20%

152 ms

script parse compile

71 ms

parse HTML

11 ms

paint composite render

10 ms

garbage collection

9 ms

Total

772 ms

Axe violations axe-core 4.13.0, full rule set

51 violating nodes across 4 rules, 1009 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious valid-lang — lang attribute must have a valid value 48 nodes
Offending elements (5 of 48)
1. .sideOpener__item--sakuin > .biLang--jp.biLang[lang="jp"]
```
五十音
```
2. .sideOpener__item--area > .biLang--jp.biLang[lang="jp"]
```
地域
```
3. .sideOpener__item--key > .biLang--jp.biLang[lang="jp"]
```
キーワード
```
4. button[data-side="sakuin.a"] > .biLang--jp.biLang[lang="jp"]
```
あ
```
5. button[data-side="sakuin.i"] > .biLang--jp.biLang[lang="jp"]
```
い
```
moderate heading-order — Heading levels should only increase by one 1 node
Offending element
1. .slide__listItem.jscSlide:nth-child(1) > .slide__listItemLink[href$="hu/#fenikkusu"] > .slide__listItemInner > h3
```
<h3 class="slide__listItemTitle">フェニックス</h3>
```

serious link-name — Links must have discernible text 1 node

Offending element

.share

<a class="share share__tw" target="_blank" href="https://x.com/intent/tweet?text=%E7%A5%9E%E9%AD%94%E7%B2%BE%E5%A6%96%E5%90%8D%E8%BE%9E%E5%85%B8&amp;url=https%3A%2F%2Fshimma.info"><i class="icon icon…

moderate meta-viewport — Zooming and scaling must not be disabled 1 node

Offending element

meta[name="viewport"]

<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1.0, maximum-scale=1.0, user-scarable=no, minimal-ui">

Accessibility failures 4 of 23 audits

valid-lang — `[lang]` attributes do not have a valid value 48 nodes
heading-order — Heading elements are not in a sequentially-descending order 1 node
link-name — Links do not have a discernible name 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

Best Practices failures 1 of 19 audits

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

SEO failures 1 of 9 audits

robots-txt — robots.txt is not valid 666 items

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	704 ms	82 ms	517 ms	183 ms
2026-09-19	710 ms	80 ms	518 ms	190 ms
2026-09-12	814 ms	102 ms	604 ms	218 ms
2026-09-05	726 ms	90 ms	575 ms	206 ms
2026-08-29	693 ms	83 ms	538 ms	206 ms
2026-08-22	659 ms	88 ms	524 ms	202 ms
2026-08-15	651 ms	78 ms	513 ms	208 ms
2026-08-08	674 ms	84 ms	531 ms	221 ms
2026-08-01	633 ms	79 ms	492 ms	196 ms
2026-07-25	641 ms	81 ms	498 ms	194 ms
2026-07-18	636 ms	79 ms	495 ms	192 ms
2026-07-11	665 ms	78 ms	510 ms	189 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

704 ms

82 ms

517 ms

183 ms

2026-09-19

710 ms

80 ms

518 ms

190 ms

2026-09-12

814 ms

102 ms

604 ms

218 ms

2026-09-05

726 ms

90 ms

575 ms

206 ms

2026-08-29

693 ms

83 ms

538 ms

206 ms

2026-08-22

659 ms

88 ms

524 ms

202 ms

2026-08-15

651 ms

78 ms

513 ms

208 ms

2026-08-08

674 ms

84 ms

531 ms

221 ms

2026-08-01

633 ms

79 ms

492 ms

196 ms

2026-07-25

641 ms

81 ms

498 ms

194 ms

2026-07-18

636 ms

79 ms

495 ms

192 ms

2026-07-11

665 ms

78 ms

510 ms

189 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 4, 2026, 10:46 PM UTC	70	16.10 s	0	112 ms	4.46 MB	3/3	±1	4,174 +68%	31.1s	Wayback
Sep 27, 2026, 8:56 PM UTC	68	6.59 s	0.037	314 ms	3.14 MB	3/3	±1	3,939 +58%	31.3s	Wayback
Sep 20, 2026, 2:34 PM UTC	64	12.97 s	0	269 ms	4.18 MB	3/3	±10	3,055 +23%	30.2s	Wayback
Sep 13, 2026, 1:48 PM UTC	61	12.34 s	0	368 ms	2.68 MB	3/3	±10	2,501 +1%	33.2s	Wayback
Sep 6, 2026, 10:23 AM UTC	58	17.08 s	0	429 ms	4.24 MB	3/3	±7	2,361 -5%	31.8s	Wayback
Aug 30, 2026, 7:57 AM UTC	60	10.62 s	0	396 ms	2.59 MB	3/3	±9	2,693 +8%	32s	Wayback
Aug 21, 2026, 7:59 AM UTC	59	10.42 s	0	403 ms	2.81 MB	3/3	±13	2,801 +13%	31.2s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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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 4 of 23 audits

Best Practices failures 1 of 19 audits

SEO failures 1 of 9 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD