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kanazawa21.jp

https://kanazawa21.jp· First analyzed 01 May 2026· Updated 01 May 2026
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kanazawa21.jp
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Hosting Provider

Architectural Systems Inc.

IP Address

133.242.154.244

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS7684

Organization

Architectural Systems Inc.

Server

Apache

Nameservers

ns.pwssl.com.ns.uniposi.jp.

Performance

80

Core Web Vitals

Weight

First Contentful Paint
2.2 s10%
Speed Index
2.9 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7.6 MB
24 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Architectural Systems Inc.

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

Languages

1
PHPv8.2.25

SEO Analysis

C65/100
19
6
0
Meta Tags10/15
Content10/12
Headings8/8
Technical11/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
K
kanazawa21.jpkanazawa21.jp

金沢21世紀美術館 | 21st Century Museum of Contemporary Art, Kanazawa.

石川県金沢市にある現代美術館です。来館情報、展覧会、イベント、教育普及プログラム、コレクションの紹介など。

Title Length62 chars

Recommended: 50-60 chars (~384px / 580px)

Description Length53 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    F38/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    0/25
    Citation
    13/25

    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
    navheader/footer
    Text ratio:5%
    Words:290
    Token eff.:Too Short
    Sections/1K:37.9
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary91w
    Descriptive Headingsavg 1.3w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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.
    C
    61/100
    11
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    10/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    5/15
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    5/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    4 recommendations
    • •Accessibility recommendation preview...
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    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.
    21/100
    F
    968 mg
    CO₂e / view
    7.6 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    1.11 g
    vs
    Returning (cached)
    553 mg
    Annual (10K/mo)
    116.1 kg
    Emission Segments
    Data Center
    216 mg
    Network
    232 mg
    Device
    519 mg
    Resource Breakdown
    JavaScript
    231.9 KB
    Images
    7.1 MB
    CSS
    221.5 KB
    Fonts
    1.9 KB
    HTML
    64.3 KB
    Green Hosting Not Verified
    Architectural Systems Inc.
    8 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    195d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    28.04.2026

    Valid Until

    12.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    www.kanazawa21.jpkanazawa21.jp

    SHA-256 Fingerprint

    7D:2C:4A:07:9D:90:E1:95:30:1F:61:3C:81:98:7A:18:A4:27:BA:2D...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    connection
    Keep-Alive
    content-type
    text/html; charset=UTF-8
    date
    Fri, 01 May 2026 14:47:29 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    keep-alive
    timeout=5, max=100
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    65

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    pop.kanazawa21.jp

    Domain Information

    kanazawa21.jp

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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
    63/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    游ゴシック体

    WCAG Partial
    66/100
    Readability
    /30
    21/30

    16px · LH 2.00

    Hierarchy
    /20
    11/20

    1x ratio · ✓ H1→H6

    WCAG
    /25
    14/25

    1:1 min contrast

    Performance
    /25
    20/25

    1 font · 1 req

    Heading Font

    游ゴシック体

    Sans16px

    Body Font

    游ゴシック体

    Sans16px

    Contrast Ratio

    1:1

    25 issues

    Reading Comfort

    ~45 CPL

    Narrow lines
    16px
    h1
    26px
    h2
    26px
    h3
    17px
    h4
    16px
    p
    Minor Second
    Scale

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

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ✅ Easy to read: Flesch score 100/100 — accessible to general audiences.

    ⚠️ Partial contrast: 25 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 MyFontsFlesch 100

    Color Palette

    5 unique colors
    Light
    #ffffff
    Background· 18.700000000000003%
    #f5ef53
    Primary· 65.7%
    #99753e
    Secondary· 5.5%
    #f8f48a
    Accent· 5.3%
    #faf9c5
    Accent· 4.8%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    15 Resources

    7
    Scripts
    8
    Styles
    3
    Async
    4
    Defer

    Top Script Sources

    googletagmanager.com(3)local(3)assets(1)

    Website Identity

    kanazawa21.jp

    Location detected: 🇯🇵 Japanvia tld
    ja

    Sponsored

    Last analyzed: 01 May 2026 at 14:48

    Historical Analysis & Change Tracking