rkk.jp

https://rkk.jp· First analyzed 20 May 2026· Updated 20 May 2026

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rkk.jp

Mobile

Sponsored

Hosting Provider

IIJ Internet

IP Address

210.149.77.82

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS2497

Organization

IIJ Internet

Server

Apache

Nameservers

ns008-5g36e11r829l0386.5.d-53.info.ns008-5g36e11r829l0386.5.d-53.jp.ns008-5g36e11r829l0386.5.d-53.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

4.2 s10%

Speed Index

5.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.3 MB

250 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IIJ Internet

Technology Stack

11 Technologies Detected

Advertising

Google Ads Google AdSense Criteo

CSS Frameworks

Analytics

Libraries

Fonts

Web Servers

Customer Support

SEO Analysis

D54/100

Meta Tags7/15

Content9/12

Headings6/8

Technical14/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

rkk.jprkk.jp

RKK熊本放送

RKKラジオAM1197kHz・ワイドFM91.4/92.3/94.2/80.0MHz、RKKテレビは3ch！九州・熊本のラジオ＆テレビ放送局(TBSテレビ系列)です。

Title Length7 chars

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

Description Length84 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (90/96) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7 URLs

robots.txt

16 rules

Allows all crawlers

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

D43/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

10/25

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

def. listsheader/footer

Text ratio:8%

Words:430

Token eff.:Optimal

Sections/1K:97.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.2w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

56/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

5/15

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

4/15

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

3 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.

9/100

542 mg

CO₂e / view

4.3 MB

Page Weight

15%

Cleaner Than

New Visitor

620 mg

Returning (cached)

310 mg

Annual (10K/mo)

65.1 kg

Emission Segments

Data Center

121 mg

Network

130 mg

Device

291 mg

Resource Breakdown

JavaScript

882.4 KB

Images

3.1 MB

CSS

226.2 KB

Fonts

1.6 KB

HTML

49.5 KB

Other

55.0 KB

Green Hosting Not Verified

IIJ Internet

10 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

11d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Japan Registry Services Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

12.05.2025

Valid Until

31.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

rkk.jpwww.rkk.jp

SHA-256 Fingerprint

96:2F:1E:FA:06:92:8E:3A:DC:75:6E:10:D3:2F:F0:48:34:9F:67:11...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html;charset=Shift_JIS

date

Wed, 20 May 2026 04:36:48 GMT

keep-alive

timeout=5, max=98

server

Apache

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (6)

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

mx.securemx.jp

alt3.aspmx.l.google.com

+2 more

Domain Information

rkk.jp

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

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.

50/100

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,maximum-scale=1

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Lato + MotoyaAr04pMaruN

WCAG Partial

50/100

Readability

/30

16/30

18px · LH 1.00

Hierarchy

/20

11/20

1.78x ratio

WCAG

/25

14/25

1:1 min contrast

Performance

/25

9/25

4 fonts · 3 req

Heading Font

Lato

Sans32px

Body Font

MotoyaAr04pMaruN

Sans18px

Contrast Ratio

1:1

37 issues

Reading Comfort

~34 CPL

Narrow lines

32px

18px

15px

18px

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

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 37 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

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

GGoogle Fonts Buy on MyFonts

Color Palette

9 unique colors

15.33:1 AAA Light

#f4f4f4

Background· 42.00000000000001%

#1d1d1d

Text· 7.4%

#634a47

Primary· 9.4%

#a99182

Secondary· 8.7%

#5f8999

Secondary· 7%

#beb5a8

Secondary· 6.7%

#ccd5d5

Secondary· 6.2%

#f7ebcf

Accent· 2%

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js2018(5)pagead2.googlesyndication.com(2)apis.google.com(2)anymind360.com(2)local(2)

Website Identity

rkk.jp

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspaceja

Social Profiles

Instagram

Sponsored

Last analyzed: 20 May 2026 at 04:37

Historical Analysis & Change Tracking