korona.co.jp

https://korona.co.jp· First analyzed 13 May 2026· Updated 13 May 2026

Export

korona.co.jp

Mobile

Sponsored

Hosting Provider

DIX Co., Ltd.

IP Address

153.122.73.79

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Shibuya City, Japan

ASN

AS131921

Organization

DIX Co., Ltd.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns2.dc.ctc.ad.jp.ns3.ctc.jp.ns1.hs.ctc.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

28.7 MB

182 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

DIX Co., Ltd.

CDN

Cloudflare

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Microsoft Clarity

UI Components

Swiper Slick Carousel

Libraries

CSS Frameworks

Fonts

Tag Managers

CDN

SEO Analysis

D57/100

Meta Tags9/15

Content12/12

Headings3/8

Technical11/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

korona.co.jpkorona.co.jp

コロナワールド

映画・4DX・パチンコ・スロット・天然温泉・サウナ・ボウリング・ゲーム・カラオケなど一日遊べる屋内型複合アミューズメント施設「コロナワールド」の公式サイトです。愛知県（小牧、春日井、中川、半田、豊田、安城、豊川）の他、大垣、沼津、金沢、福井、小田原、仙台、福山、小倉に展開。

Title Length7 chars

Recommended: 50-60 chars (~43px / 580px)

Description Length137 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (160/228) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Local SEO

Local Search Readiness

6/100

Poor

2 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

D42/100

Bot Access

20/25

Machine Read.

13/25

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

nav

Text ratio:2%

Words:979

Token eff.:Optimal

Sections/1K:9.2

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

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 (9)

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.

82/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

18/20

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

5/15

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.

18/100

3.64 g

CO₂e / view

28.7 MB

Page Weight

Cleaner Than

New Visitor

4.16 g

Returning (cached)

2.08 g

Annual (10K/mo)

436.5 kg

Emission Segments

Data Center

812 mg

Network

873 mg

Device

1.95 g

Resource Breakdown

JavaScript

95.3 KB

Images

7.7 MB

CSS

51.7 KB

Fonts

61.8 KB

HTML

14.4 KB

Other

20.8 MB

Green Hosting Not Verified

DIX Co., Ltd.

8 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

WAF

170d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

29.09.2025

Valid Until

31.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.korona.co.jpkorona.co.jp

SHA-256 Fingerprint

10:8B:4F:20:2A:60:F3:AA:BC:A4:8E:FF:E0:47:4E:3D:B7:F5:69:5C...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray

9fb30b52fe73cf72-SJC

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Wed, 13 May 2026 16:29:51 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx.securemx.jp

mx6.securemx.jp

Domain Information

korona.co.jp

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.

56/100

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,user-scalable=yes,initial-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

YuGothicM

WCAG AA

66/100

Readability

/30

16/30

12px · LH 1.60

Hierarchy

/20

15/20

1.33x ratio · ✓ H1→H6

WCAG

/25

15/25

5.02:1 min contrast

Performance

/25

20/25

2 fonts · 1 req

Heading Font

YuGothicM

Sans16px

Body Font

YuGothicM

Sans12px

Contrast Ratio

5.02:1

WCAG AA (≥4.5:1)

Reading Comfort

~48 CPL

Optimal (45–75)

16px

18px

12px

Major Second

Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

✅ 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.

GGoogle Fonts Buy on MyFonts

Color Palette

11 unique colors

16.62:1 AAA Light

#ffffff

Background· 31.900000000000002%

#221d1f

Text· 6%

#a9c0ca

Primary· 12.899999999999999%

#b18f7f

Secondary· 7.4%

#422f2a

Secondary· 6.7%

#976453

Secondary· 6.5%

#c9d7dc

Secondary· 5.8%

#69554b

Secondary· 5.5%

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)googletagmanager.com(2)scripts.clarity.ms(1)clarity.ms(1)cdn.jsdelivr.net(1)

Website Identity

korona.co.jp

Location detected: 🇯🇵 Japanvia tld

Sponsored

Last analyzed: 13 May 2026 at 16:31

Historical Analysis & Change Tracking