rsk.co.jp

https://rsk.co.jp· First analyzed 10 May 2026· Updated 10 May 2026

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rsk.co.jp

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

13.193.37.194

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Apache

Nameservers

ns-1056.awsdns-04.org.ns-1580.awsdns-05.co.uk.ns-265.awsdns-33.com.ns-814.awsdns-37.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7 MB

233 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Google Ads Twitter Ads

CSS Frameworks

Tailwind CSS

Tag Managers

Google Tag Manager

Web Servers

Apache

SEO Analysis

D59/100

Meta Tags5/15

Content9/12

Headings3/8

Technical13/25

E-E-A-T3/7

Images5/7

Links5/5

URL5/5

Social5/5

Freshness2/4

Mobile1/4

Indexability3/3

rsk.co.jprsk.co.jp

RSK山陽放送岡山・香川

岡山・香川エリアの放送局。ニュース、天気、番組、グルメ、イベントなど情報満載でお届けします。

Title Length13 chars

Recommended: 50-60 chars (~80px / 580px)

Description Length46 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

16 rules

Sitemap reference found

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

D45/100

Bot Access

19/25

Machine Read.

10/25

Schema Data

0/25

Citation

16/25

AI Bot Access

13/14 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:317

Token eff.:Optimal

Sections/1K:75.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary22w

Descriptive Headingsavg 1.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (6)

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.

76/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

13/20

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

11/15

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.

3 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.

36/100

725 mg

CO₂e / view

7.0 MB

Page Weight

Cleaner Than

New Visitor

828 mg

Returning (cached)

414 mg

Annual (10K/mo)

87.0 kg

Emission Segments

Data Center

36 mg

Network

213 mg

Device

476 mg

Resource Breakdown

JavaScript

397.1 KB

Images

6.5 MB

CSS

30.3 KB

HTML

16.6 KB

Other

56.2 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

71%Good

Static / Informational

HTTPS

No WAF

275d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.02.2026

Valid Until

09.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.rsk.co.jprsk.co.jp

SHA-256 Fingerprint

DC:71:F5:8E:17:01:BE:FB:E1:7A:53:A3:A2:96:93:25:14:26:99:90...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

16718

content-type

text/html; charset=UTF-8

date

Sun, 10 May 2026 15:12:43 GMT

server

Apache

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

aspmx.l.google.com

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

rsk.co.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

59/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Meiryo

WCAG AA

67/100

Readability

/30

20/30

14px · LH 1.60

Hierarchy

/20

8/20

WCAG

/25

23/25

5.17:1 min contrast

Performance

/25

16/25

1 font

Heading Font

Meiryo

Sans

Body Font

Meiryo

Sans14px

Contrast Ratio

5.17:1

WCAG AA (≥4.5:1)

Reading Comfort

~53 CPL

Optimal (45–75)

18px

14px

Minor Second

Scale

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

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

✅ Optimal line length: ~53 chars/line (ideal 45–75 CPL).

✅ Easy to read: Flesch score 100/100 — accessible to general audiences.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.2:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

Buy on MyFontsFluid Type (rem)Flesch 100

Color Palette

11 unique colors

15.37:1 AAA Light

#ffffff

Background· 37.5%

#232528

Text· 7.6%

#677f7f

Primary· 6.5%

#c2918d

Secondary· 6.1%

#f0c4c2

Accent· 5.7%

#92c3c5

Secondary· 4.1%

#d1e8ef

Secondary· 4%

#543e3f

Secondary· 3.8%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)securepubads.g.doubleclick.net(3)dmp.im-apps.net(2)youtube.com(2)connect.facebook.net(2)

Website Identity

rsk.co.jp

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspaceja

Sponsored

Last analyzed: 10 May 2026 at 15:13

Historical Analysis & Change Tracking

rsk.co.jp

RSK山陽放送 岡山・香川

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

rsk.co.jp

RSK山陽放送岡山・香川