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z-z.jp

https://z-z.jp· First analyzed 04 May 2026· Updated 04 May 2026
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z-z.jp
Desktop screenshot of z-z.jp
Mobile screenshot of z-z.jp
Mobile

Sponsored

Hosting Provider

XSERVER Inc.

IP Address

183.181.82.64

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131965

Organization

XSERVER Inc.

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

patrick.ns.cloudflare.com.rosemary.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
760 ms10%
Speed Index
988 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
112 KB
17 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
XSERVER Inc.
CDN
Cloudflare

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

Advertising

2
Google AdsGoogle AdSense

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

C64/100
20
6
0
Meta Tags9/15
Content7/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images6/7
Links3/5
URL5/5
Social3/5
Freshness0/4
Mobile2/4
Indexability3/3
Z
z-z.jpz-z.jp

Z-Z BOARD: 全デバイス対応の無料レンタル掲示板

スマホ・パソコン・タブレット・ガラケー等、全デバイス対応の無料のレンタル掲示板サービス。Webプッシュ通知・LINE・メール・RSSで投稿通知。LINEログイン等、荒らし対策も万全。画像・Twitter・インスタ・YouTube・TikTok等の埋込対応。スレッドと一覧タイプ。

Title Length28 chars

Recommended: 50-60 chars (~174px / 580px)

Description Length139 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    8 URLs

    robots.txt

    13 rules

    Sitemap reference found

    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

    F37/100
    Bot Access
    20/25
    Machine Read.
    8/25
    Schema Data
    0/25
    Citation
    9/25

    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:25%
    Words:81
    Token eff.:Too Short
    Sections/1K:210
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1w
    Canonical URL
    Open Graph2/3
    Twitter Card1/3
    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.
    B
    72/100
    9
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    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
    10/15
    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
    1/15
    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.
    69/100
    A+
    14 mg
    CO₂e / view
    112.3 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    16 mg
    vs
    Returning (cached)
    8 mg
    Annual (10K/mo)
    1.7 kg
    Emission Segments
    Data Center
    3 mg
    Network
    3 mg
    Device
    8 mg
    Resource Breakdown
    JavaScript
    1.9 KB
    Images
    71.5 KB
    CSS
    32.6 KB
    HTML
    6.4 KB
    Green Hosting Not Verified
    XSERVER Inc.
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    No WAF

    74d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    CloudSecure Corporation

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-384 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    16.06.2025

    Valid Until

    17.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    z-z.jpwww.z-z.jp

    SHA-256 Fingerprint

    25:55:5E:58:27:67:3D:09:98:55:B4:51:77:5E:1A:99:28:F5:8C:42...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html
    date
    Mon, 04 May 2026 19:23:26 GMT
    referrer-policy
    origin
    server
    nginx
    strict-transport-security
    max-age=16070400
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    25

    SPF
    DKIM
    DMARC

    Domain Information

    z-z.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
    62/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    zzlogo + Shin Go Regular

    WCAG Partial
    72/100
    Readability
    /30
    26/30

    20px · LH 1.60

    Hierarchy
    /20
    19/20

    4.75x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1.74:1 min contrast

    Performance
    /25
    11/25

    3 fonts · 1 req

    Heading Font

    zzlogo

    Sans95px

    Body Font

    Shin Go Regular

    Sans20px

    Contrast Ratio

    1.74:1

    3 issues

    Reading Comfort

    Dual Sans-Serif

    left aligned
    95px
    h1
    36px
    h2
    24px
    h3
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

    ⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.7:1).

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

    ✅ Strong hierarchy: Headlines are 4.8x larger than body text.

    ⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

    Buy on MyFonts

    Color Palette

    8 unique colors
    19.91:1 AAA Light
    #ffffff
    Primary· 92.1%
    #090909
    Text· 0.9%
    #b2b8c2
    Secondary· 1.3%
    #3f78d9
    Accent· 1.1%
    #cad1d9
    Secondary· 1.1%
    #2c539b
    Accent· 0.3%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Advertising

    1
    Google AdsEnterprise

    Ad platforms and retargeting pixels

    1

    Categories

    1

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    3 Resources

    1
    Scripts
    2
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(1)

    Website Identity

    z-z.jp

    Location detected: 🇯🇵 Japanvia tld
    ja

    Sponsored

    Last analyzed: 04 May 2026 at 19:23

    Historical Analysis & Change Tracking