retpc.jp

https://retpc.jp· First analyzed 30 May 2026· Updated 30 May 2026

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retpc.jp

Mobile

Sponsored

Hosting Provider

SAKURA

IP Address

112.78.112.225

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS9371

Organization

SAKURA

Server

Nginx

Nameservers

nsk0.secure.ne.jp.nsk1.secure.ne.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.6 s10%

Speed Index

3.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.9 MB

129 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.6.5

cms

kindaikaCustom

Technology Stack

16 Technologies Detected

Plugins

Contact Form 7

Photo Gallery Wp Pagenavi Media Element Html5 Video And Audio Player Anything Popup

Analytics

Libraries

UI Components

CSS Frameworks

Icon Libraries

Tag Managers

Advertising

Web Servers

Customer Support

SEO Analysis

D56/100

Meta Tags4/15

Content8/12

Headings8/8

Technical17/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

retpc.jpretpc.jp

公益財団法人不動産流通推進センター

No description available for this page.

Title Length17 chars

Recommended: 50-60 chars (~105px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

9 rules

Local SEO

Local Search Readiness

5/100

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

F30/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

6/25

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:4%

Words:260

Token eff.:Too Short

Sections/1K:30.8

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

67/100

Passed

Critical

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

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

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 recommendations

•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.

2/100

370 mg

CO₂e / view

2.9 MB

Page Weight

30%

Cleaner Than

New Visitor

423 mg

Returning (cached)

211 mg

Annual (10K/mo)

44.4 kg

Emission Segments

Data Center

83 mg

Network

89 mg

Device

199 mg

Resource Breakdown

JavaScript

706.3 KB

Images

1.8 MB

CSS

418.2 KB

HTML

62.3 KB

Green Hosting Not Verified

SAKURA

9 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

11.04.2026

Valid Until

10.07.2026

Subject Alternative Names (2)

retpc.jpwww.retpc.jp

SHA-256 Fingerprint

0F:03:2B:F2:6E:07:1D:61:FB:67:9A:81:A6:A3:0C:B6:61:9F:C5:45...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

date

Sat, 30 May 2026 20:41:24 GMT

link

<https://www.retpc.jp/wp-json/>; rel="https://api.w.org/", <...

server

nginx

x-pingback

https://www.retpc.jp/xmlrpc.php

set-cookie

mw-wp-form-token

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

retpc-jp.mail.protection.outlook.com

Domain Information

retpc.jp

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.

57/100

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=0,viewport-fit=cover

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

メイリオ

WCAG Partial

57/100

Readability

/30

12/30

14px · LH 1.62

Hierarchy

/20

16/20

1.76x ratio · ✓ H1→H6

WCAG

/25

15/25

1:1 min contrast

Performance

/25

14/25

2 fonts

Heading Font

メイリオ

Sans24px

Body Font

メイリオ

Sans14px

Contrast Ratio

1:1

17 issues

Reading Comfort

Single Font Family

left aligned

24px

30px

20px

16px

14px

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

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.0:1).

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

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

✅ Lean font stack: 2 font families keeps load times fast.

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

Buy on MyFontsFluid Type (rem)

Color Palette

9 unique colors

Light

#ffffff

Background· 47.800000000000004%

#eaedee

Secondary· 11.4%

#e85b6a

Primary· 8.1%

#5d92ae

Secondary· 6.9%

#bbc6d2

Secondary· 6.7%

#82b0c6

Secondary· 6.6%

#d28d99

Secondary· 6.5%

#dcd1cf

Secondary· 3.5%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

retpc.jp(6)googletagmanager.com(3)connect.facebook.net(2)s.yimg.jp(2)d-track.send.microad.jp(1)

Website Identity

retpc.jp

Location detected: 🇯🇵 Japanvia tld

📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 30 May 2026 at 20:42

Historical Analysis & Change Tracking