StackOptic
Back to Search
artaquarium.jp favicon

artaquarium.jp

https://artaquarium.jp· First analyzed 19 May 2026· Updated 19 May 2026
Export
artaquarium.jp
Desktop screenshot of artaquarium.jp
Mobile screenshot of artaquarium.jp
Mobile

Sponsored

Hosting Provider

XSERVER Inc.

IP Address

157.112.150.45

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131965

Organization

XSERVER Inc.

Server

Nginx

Nameservers

ns2.value-domain.com.ns1.value-domain.com.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
10.7 MB
72 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
artaquariumv1.0.0Custom
by artaquarium
View Theme

Technology Stack

7 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

Plugins

1
Google Analytics For Wordpress

SEO Analysis

C65/100
20
6
2
Meta Tags5/15
Content6/12
Headings3/8
Technical23/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
A
artaquarium.jpartaquarium.jp

アートアクアリウム | ART AQUARIUM

アートアクアリウムは、光・音・香のオリジナル演出で魅せる金魚アートの展覧会です。

Title Length24 chars

Recommended: 50-60 chars (~150px / 580px)

Description Length40 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (36/38) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

14/100
Poor
4 13

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
7/25
Citation
12/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
def. listsnavheader/footer
Text ratio:3%
Words:178
Token eff.:Too Short
Sections/1K:56.2
Depth:3/5

Structured Data

6 JSON-LD
Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary
Descriptive Headingsavg 1w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
A
80/100
14
Passed
2
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
25/100
F
1.36 g
CO₂e / view
10.7 MB
Page Weight
5%
Cleaner Than
New Visitor
1.55 g
vs
Returning (cached)
777 mg
Annual (10K/mo)
163.2 kg
Emission Segments
Data Center
304 mg
Network
326 mg
Device
730 mg
Resource Breakdown
JavaScript
319.5 KB
Images
8.9 MB
CSS
1.5 MB
Fonts
30.6 KB
HTML
23.7 KB
Green Hosting Not Verified
XSERVER Inc.
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

57d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

artaquarium.jpwww.artaquarium.jp

SHA-256 Fingerprint

C2:18:52:63:E0:5A:FE:B8:85:2A:B3:B3:23:29:35:3D:48:F6:5F:F6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Tue, 19 May 2026 13:59:24 GMT
link
<https://artaquarium.jp/wp-json/>; rel="https://api.w.org/"
server
nginx
vary
Accept-Encoding
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

25

SPF
DKIM
DMARC

Domain Information

artaquarium.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
C
68/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Yu Gothic Medium + Noto Serif JP

WCAG Partial
60/100
Readability
/30
18/30

16px · LH 2.75

Hierarchy
/20
13/20

1x ratio · ✓ H1→H6

WCAG
/25
15/25

1:1 min contrast

Performance
/25
14/25

4 fonts · 2 req

Heading Font

Yu Gothic Medium

Sans16px

Body Font

Noto Serif JP

Serif16px

Contrast Ratio

1:1

9 issues

Reading Comfort

~45 CPL

Optimal (45–75)
16px
h1
32px
h2
24px
h3
16px
p
Augmented Fourth
Scale

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Wide line spacing (2.75). 1.4–1.6 is optimal for body text.

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

GGoogle FontsBuy on MyFonts

Color Palette

13 unique colors
Light
#15121a
Primary· 19.5%
#030304
Text· 12.7%
#360314
Accent· 9.9%
#803fb8
Secondary· 8.3%
#d490c6
Secondary· 7.2%
#561694
Accent· 6.6%
#560437
Accent· 6.1%
#91054c
Accent· 6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

13 Resources

11
Scripts
2
Styles
9
Async
1
Defer

Top Script Sources

googletagmanager.com(4)connect.facebook.net(3)google-analytics.com(1)artaquarium.jp(1)snapwidget.com(1)

Website Identity

アートアクアリウム

Organization

アートアクアリウムは、光・音・香のオリジナル演出で魅せる金魚アートの展覧会です。

artaquarium.jp/
Location detected: 🇯🇵 Japanvia tld
ja

Sponsored

Last analyzed: 19 May 2026 at 14:00

Historical Analysis & Change Tracking