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yutasan.co

https://yutasan.co· First analyzed 10 May 2026· Updated 10 May 2026
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yutasan.co
Desktop screenshot of yutasan.co
Mobile screenshot of yutasan.co
Mobile

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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

34.97.75.37

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Osaka, Japan

ASN

AS396982

Organization

Google Cloud (asia-northeast2)

Server

Nginx

Nameservers

ns-cloud-d4.googledomains.com.ns-cloud-d1.googledomains.com.ns-cloud-d2.googledomains.com.ns-cloud-d3.googledomains.com.

Performance

75

Core Web Vitals

Weight

First Contentful Paint
3.4 s10%
Speed Index
4.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
61 KB
2 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Google Cloud Platform

Technology Stack

2 Technologies Detected

Fonts

1
Google Fonts

Web Servers

1
Nginxv1.26.3

SEO Analysis

F26/100
9
9
3
Meta Tags4/15
Content0/12
Headings6/8
Technical9/21
E-E-A-T0/7
Images0/7
Links0/5
URL5/5
Social0/5
Freshness0/4
Mobile2/4
Indexability0/3
Y
yutasan.coyutasan.co

サービス停止のお知らせ | Nagare

No description available for this page.

Title Length20 chars

Recommended: 50-60 chars (~121px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing meta description — important for click-through rates in SERPs
  • • Very thin content (5 words). Search engines need substantial content for ranking.
  • • Page is set to noindex — will not appear in search results

12 issues found

Upgrade to view details

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.

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AI & LLM Readiness

F28/100
Bot Access
20/25
Machine Read.
6/25
Schema Data
0/25
Citation
2/25

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
Text ratio:2%
Words:2
Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph0/3
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.
B
76/100
10
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
16/20
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
77/100
A+
6 mg
CO₂e / view
61.2 KB
Page Weight
95%
Cleaner Than
New Visitor
7 mg
vs
Returning (cached)
4 mg
Annual (10K/mo)
744 g
Emission Segments
Data Center
<0.001 g
Network
2 mg
Device
4 mg
Resource Breakdown
Fonts
59.6 KB
HTML
1.6 KB
Green Hosting Verified
Google Cloud
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

30.03.2026

Valid Until

28.06.2026

Subject Alternative Names (1)

yutasan.co

SHA-256 Fingerprint

BF:5F:31:10:C4:88:1A:9B:97:FE:1A:C1:4C:77:9C:07:E2:FC:CC:8D...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 1 Hours(public, max-age=3600)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Sun, 10 May 2026 20:35:38 GMT
etag
W/"4f97a3cb6c24723a4c71b7d12ede158b"
Good Warning Issue

Email Infrastructure

Google Workspace

Score

45

SPF
DKIM
DMARC

MX Records (7)

aspmx5.googlemail.com
alt2.aspmx.l.google.com
aspmx.l.google.com
aspmx4.googlemail.com

+3 more

Domain Information

yutasan.co

DNSSEC
Not Enabled

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
65/100
Mobile Friendly
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

Noto Sans JP

WCAG Fail
73/100
Readability
/30
20/30

18px · LH 1.80

Hierarchy
/20
17/20

2x ratio · ✓ H1→H6

WCAG
/25
16/25

1:1 min contrast

Performance
/25
20/25

1 font · 1 req

Heading Font

Noto Sans JP

Sans36px

Body Font

Noto Sans JP

Sans18px

Contrast Ratio

1:1

2 issues

Reading Comfort

Single Font Family

center aligned
36px
h1
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

❌ Low contrast: 2 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

✅ Lean font stack: 1 font families keeps load times fast.

GGoogle FontsFluid Type (rem)

Color Palette

8 unique colors
11.05:1 AAA Dark
#111111
Background· 97.69999999999999%
#c6c6c6
Other· 0.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

yutasan.co

Location detected: 🇯🇵 Japanvia ip
📧 Google Workspaceja

Sponsored

Last analyzed: 10 May 2026 at 20:35

Historical Analysis & Change Tracking