centrumcentre.com

https://centrumcentre.com· First analyzed 30 Apr 2026· Updated 30 Apr 2026

Export

centrumcentre.com

Mobile

Sponsored

Hosting Provider

BETINC

IP Address

162.43.121.67

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131965

Organization

BETINC

Server

Nginx

Nameservers

ns3.xserver.jp.ns5.xserver.jp.ns2.xserver.jp.ns4.xserver.jp.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

2.0 s10%

Speed Index

2.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1 MB

22 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Cocoonv2.9.2.7Custom

by わいひら

View Theme

Technology Stack

8 Technologies Detected

Advertising

Google Ads Google AdSense

Libraries

CSS Frameworks

Icon Libraries

Fonts

Analytics

Web Servers

SEO Analysis

B74/100

Meta Tags7/15

Content3/12

Headings8/8

Technical23/25

E-E-A-T5/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

centrumcentre.comcentrumcentre.com

終活と身辺整理のコツ！初心者でも簡単にできる方法を解説 | 終活で身辺整理を始めたいけれど何から手をつければいいか分からない方に向けて...

終活で身辺整理を始めたいけれど何から手をつければいいか分からない方に向けて、初心者でも簡単にできる方法とコツを解説します。効率的な進め方を知って、安心できる準備を始めましょう。

Title truncated.

Title Length118 chars

Recommended: 50-60 chars (~729px / 580px)

Description Length88 chars

Recommended: 120-160 chars

Issues (2)

• Title is too long (118 chars, ~729px). Will be truncated in search results.
• Very thin content (3 words). Search engines need substantial content for ranking.

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

5 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

D43/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

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

Text ratio:2%

Words:374

Token eff.:Optimal

Structured Data

1 JSON-LD

Article×1.2Person×1.3WebSitemicrodata

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

6/20

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.

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.

55/100

127 mg

CO₂e / view

1.0 MB

Page Weight

70%

Cleaner Than

New Visitor

145 mg

Returning (cached)

73 mg

Annual (10K/mo)

15.2 kg

Emission Segments

Data Center

28 mg

Network

31 mg

Device

68 mg

Resource Breakdown

JavaScript

53.4 KB

Images

768.0 KB

CSS

76.3 KB

Fonts

87.2 KB

HTML

41.8 KB

Other

300 B

Green Hosting Not Verified

BETINC

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

36d

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/2

Valid From

08.03.2026

Valid Until

06.06.2026

Subject Alternative Names (2)

centrumcentre.comwww.centrumcentre.com

SHA-256 Fingerprint

87:DB:DD:58:5D:74:5F:63:AB:0C:62:96:16:71:2E:71:48:05:C5:7D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

⚪ Custom(s-maxage=10)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 30 Apr 2026 19:49:09 GMT

link

<https://centrumcentre.com/wp-json/>; rel="https://api.w.org...

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

centrumcentre.com

Domain Age

8y 8m

Created

23.08.2017

Expires

23.08.2026

Last Updated

24.07.2025

Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

73/100

Mobile Friendly4 breakpoints

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, viewport-fit=cover

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Hiragino Kaku Gothic ProN

WCAG Partial

80/100

Readability

/30

25/30

18px · LH 1.80

Hierarchy

/20

15/20

1.44x ratio · ✓ H1→H6

WCAG

/25

20/25

2.38:1 min contrast

Performance

/25

20/25

1 font · 2 req

Heading Font

Hiragino Kaku Gothic ProN

Sans26px

Body Font

Hiragino Kaku Gothic ProN

Sans18px

Contrast Ratio

2.38:1

2 issues

Reading Comfort

~39 CPL

Narrow lines

26px

24px

22px

18px

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

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.4:1).

✅ 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.

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

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

Buy on MyFontsFluid Type (rem)

Color Palette

6 unique colors

3.95:1 AA Large Light

#ffffff

Background· 86.1%

#7f8082

Other· 3%

#a6d9dd

Primary· 4.5%

#b6c7cd

Secondary· 2.9%

#d8e3e5

Secondary· 2.2%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Pinterest WidgetsFree

Twitter/X WidgetsFree

LinkedIn WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

centrumcentre.com(6)(4)local(1)assets.pinterest.com(1)

Website Identity

centrumcentre.com

8 years old

Location detected: 🇯🇵 Japanvia ip

GMO Internet Group, Inc. d/b/a Onamae.comja

Social Profiles

Facebook X (Twitter)Pinterest

Sponsored

Last analyzed: 30 Apr 2026 at 19:49

Historical Analysis & Change Tracking