shirokane-sky.tokyo

https://shirokane-sky.tokyo· First analyzed 28 Apr 2026· Updated 28 Apr 2026

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shirokane-sky.tokyo

Mobile

Sponsored

Hosting Provider

SAKURA

IP Address

160.16.206.158

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Tokyo, Japan

ASN

AS9370

Organization

SAKURA

Server

Apache

Nameservers

03.dnsv.jp.04.dnsv.jp.01.dnsv.jp.02.dnsv.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

9.4 MB

78 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

SAKURA

Technology Stack

9 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Fonts

Web Servers

Languages

SEO Analysis

D59/100

Meta Tags5/15

Content10/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

shirokane-sky.tokyoshirokane-sky.tokyo

白金ザ・スカイ｜売主様・仲介手数料無料｜貸主様・管理料無料

【SHIROKANE THE SKY】売主様・貸主様・買主様・借主様専用・白金ザ・スカイマッチングサイト。EAST・WEST.

Title Length29 chars

Recommended: 50-60 chars (~179px / 580px)

Description Length64 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

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Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

11/100

Poor

3 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

D47/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

14/25

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. listsheader/footer

Text ratio:5%

Words:522

Token eff.:Optimal

Sections/1K:19.2

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w

Descriptive Headingsavg 2.7w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

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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.

83/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

9/15

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.

1 recommendation

•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

1.19 g

CO₂e / view

9.4 MB

Page Weight

Cleaner Than

New Visitor

1.36 g

Returning (cached)

679 mg

Annual (10K/mo)

142.6 kg

Emission Segments

Data Center

265 mg

Network

285 mg

Device

638 mg

Resource Breakdown

JavaScript

88.7 KB

Images

4.3 MB

CSS

4.9 MB

Fonts

91.0 KB

HTML

17.6 KB

Green Hosting Not Verified

SAKURA

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

53d

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/1.1

Valid From

22.03.2026

Valid Until

20.06.2026

Subject Alternative Names (1)

shirokane-sky.tokyo

SHA-256 Fingerprint

B8:3F:60:B8:E7:DF:31:F0:A7:44:95:26:59:6E:32:E4:35:F1:EA:41...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

17712

content-type

text/html; charset=UTF-8

date

Tue, 28 Apr 2026 03:49:17 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

shirokane-sky.tokyo

Domain Age

3y 8m

Created

04.08.2022

Expires

04.08.2028

Last Updated

22.12.2025

Registrar

GMO Internet Group, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

55/100

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, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue + EB Garamond

WCAG AAA

56/100

Readability

/30

13/30

14px · LH 2.40

Hierarchy

/20

13/20

1.79x ratio · ✓ H1→H6

WCAG

/25

18/25

9.04:1 min contrast

Performance

/25

12/25

System fonts

Heading Font

Helvetica Neue

Sans25px

Body Font

EB Garamond

Serif14px

Contrast Ratio

9.04:1

WCAG AAA (≥7:1)

Reading Comfort

~44 CPL

Narrow lines

25px

48px

14px

Octave

Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Wide line spacing (2.40). 1.4–1.6 is optimal for body text.

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.0:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle FontsFlesch 34

Color Palette

15 unique colors

2.57:1 Fail Dark

#6d786a

Other· 6.4%

#c1c2bb

Other· 4.6%

#f8fbfc

Primary· 13.2%

#cad4d9

Secondary· 8.4%

#dee6ec

Secondary· 8.1%

#162118

Secondary· 7.1%

#4b6052

Secondary· 6.8%

#4e88be

Secondary· 6.6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)connect.facebook.net(2)googletagmanager.com(1)ajax.googleapis.com(1)code.jquery.com(1)

Website Identity

shirokane-sky.tokyo

03-6280-6572

3 years old

Location detected: 🇯🇵 Japanvia ip

GMO Internet Group, Inc.ja

Sponsored

Last analyzed: 28 Apr 2026 at 03:49

Historical Analysis & Change Tracking