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know-vpd.jp

https://know-vpd.jp· First analyzed 22 May 2026· Updated 22 May 2026
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know-vpd.jp
Desktop screenshot of know-vpd.jp
Mobile screenshot of know-vpd.jp
Mobile

Sponsored

Hosting Provider

Server Farm

IP Address

202.51.11.47

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Minato, Japan

ASN

AS23661

Organization

Server Farm

Server

Apache

Nameservers

nsx2.clara.co.jp.ns.know-vpd.jp.

Performance

84

Core Web Vitals

Weight

First Contentful Paint
1.9 s10%
Speed Index
2.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
15.3 MB
64 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Server Farm

Technology Stack

9 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

Languages

1
PHPv7.4.33

SEO Analysis

D55/100
14
10
0
Meta Tags10/15
Content8/12
Headings3/8
Technical12/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
K
know-vpd.jpknow-vpd.jp

Know VPD! - ワクチンで防げる病気（VPD）を知って子供たちの命を守る

ワクチンで防げる病気（VPD）を知って子供たちの命を守ろう。

Title Length40 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length30 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    71 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    F33/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    0/25
    Citation
    8/25

    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. listsnav
    Text ratio:7%
    Words:142
    Token eff.:Too Short
    Sections/1K:7
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headings
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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
    68/100
    8
    Passed
    5
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    11/20
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    3/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    4/100
    F
    1.94 g
    CO₂e / view
    15.3 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    2.22 g
    vs
    Returning (cached)
    1.11 g
    Annual (10K/mo)
    232.8 kg
    Emission Segments
    Data Center
    433 mg
    Network
    466 mg
    Device
    1.04 g
    Resource Breakdown
    JavaScript
    174.3 KB
    Images
    1.5 MB
    CSS
    13.6 MB
    HTML
    29.6 KB
    Green Hosting Not Verified
    Server Farm
    9 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    58d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    GlobalSign nv-sa

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    17.06.2025

    Valid Until

    19.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    www.know-vpd.jpknow-vpd.jp

    SHA-256 Fingerprint

    11:16:04:D9:6C:7C:B9:2E:00:20:0C:61:32:01:B3:5F:60:90:20:9F...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟣 Private(private, must-revalidate)
    connection
    Keep-Alive
    content-length
    30060
    content-type
    text/html; charset=UTF-8
    date
    Fri, 22 May 2026 00:51:30 GMT
    keep-alive
    timeout=5, max=100
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    mail.know-vpd.jp

    Domain Information

    know-vpd.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.
    D
    59/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    NotoSansJP-Black + ヒラギノ角ゴ Pro W6

    WCAG Partial
    62/100
    Readability
    /30
    18/30

    13px · LH 1.50

    Hierarchy
    /20
    13/20

    1.6x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    3.67:1 min contrast

    Performance
    /25
    13/25

    2 fonts · 4 req

    Heading Font

    NotoSansJP-Black

    Sans21px

    Body Font

    ヒラギノ角ゴ Pro W6

    Sans13px

    Contrast Ratio

    3.67:1

    1 issue

    Reading Comfort

    ~48 CPL

    Optimal (45–75)
    21px
    h1
    26px
    h2
    13px
    p

    ❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.7:1).

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

    ⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

    Buy on MyFonts

    Color Palette

    9 unique colors
    Light
    #ffffff
    Background· 56%
    #ffbe00
    Primary· 11%
    #ebe3da
    Secondary· 10.5%
    #ccdedc
    Secondary· 6.7%
    #fce0a4
    Accent· 5.1%
    #cfb384
    Secondary· 4.2%
    #be8b82
    Secondary· 3.1%
    #ecf6f1
    Secondary· 2.4%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Twitter/X WidgetsFree

    Social widgets and sharing tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    15 Resources

    13
    Scripts
    2
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    js(10)googletagmanager.com(2)platform.twitter.com(1)

    Website Identity

    know-vpd.jp

    Location detected: 🇯🇵 Japanvia tld
    ja

    Sponsored

    Last analyzed: 22 May 2026 at 00:52

    Historical Analysis & Change Tracking