rnb.co.jp

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

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rnb.co.jp

Mobile

Sponsored

Hosting Provider

STNet, Incorporated

IP Address

61.206.7.212

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Matsuyama, Japan

ASN

AS7522

Organization

STNet, Incorporated

Server

Apache

Nameservers

ns1.rnb.co.jp.ns1.stnet.ad.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%

15.2 MB

172 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

UI Components

Slick Carousel Owl Carousel

Advertising

Libraries

CSS Frameworks

Fonts

Tag Managers

Web Servers

Languages

SEO Analysis

D57/100

Meta Tags7/15

Content11/12

Headings3/8

Technical14/21

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social3/5

Freshness2/4

Mobile1/4

Indexability3/3

rnb.co.jprnb.co.jp

RNB 南海放送～私たちは、愛媛主義

南海放送公式ホームページです。最新のTVやラジオ番組、イベント情報ほか、愛媛のニュースや子育て・健康・防災・くらし・スポーツ・エンタメ情報をお届けします。

Title Length19 chars

Recommended: 50-60 chars (~117px / 580px)

Description Length77 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

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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

D49/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

16/25

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:6%

Words:1,123

Token eff.:Optimal

Sections/1K:1.8

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary211w

Descriptive Headingsavg 2.4w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

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.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

12/15

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

2/15

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.

16/100

1.93 g

CO₂e / view

15.2 MB

Page Weight

Cleaner Than

New Visitor

2.20 g

Returning (cached)

1.10 g

Annual (10K/mo)

231.0 kg

Emission Segments

Data Center

430 mg

Network

462 mg

Device

1.03 g

Resource Breakdown

JavaScript

480.0 KB

Images

14.2 MB

CSS

277.8 KB

Fonts

89.4 KB

HTML

126.8 KB

Other

55.7 KB

Green Hosting Not Verified

STNet, Incorporated

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

27.06.2025

Valid Until

28.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.rnb.co.jprnb.co.jp

SHA-256 Fingerprint

8C:5D:51:FA:FD:BC:82:51:2E:B1:56:E9:2E:10:66:9A:E8:27:B9:DA...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-length

183

content-type

text/html; charset=UTF-8

date

Sun, 10 May 2026 00:00:44 GMT

keep-alive

timeout=5, max=100

server

Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.30

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

ns1.rnb.co.jp

Domain Information

rnb.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.

62/100

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, viewport-fit=cover

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Yu Gothic medium

WCAG Partial

68/100

Readability

/30

22/30

16px · LH 1.30

Hierarchy

/20

12/20

1x ratio · ✓ H1→H6

WCAG

/25

18/25

3.31:1 min contrast

Performance

/25

16/25

3 fonts · 1 req

Heading Font

Yu Gothic medium

Sans16px

Body Font

Yu Gothic medium

Sans16px

Contrast Ratio

3.31:1

1 issue

Reading Comfort

~37 CPL

Narrow lines

16px

35px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Tight line spacing (1.30). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 50/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.3:1).

✅ 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 MyFontsFluid Type (rem)Flesch 50

Color Palette

12 unique colors

4.18:1 AA Large Light

#ffffff

Background· 35.1%

#827b72

Other· 4.4%

#f1f1e6

Secondary· 11.4%

#1d437d

Primary· 7.5%

#80604b

Secondary· 7.4%

#282836

Secondary· 6.1%

#e7cd59

Accent· 5.8%

#d99676

Accent· 5.7%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)cse.google.com(3)googletagmanager.com(2)securepubads.g.doubleclick.net(2)dmp.im-apps.net(1)

Website Identity

rnb.co.jp

Location detected: 🇯🇵 Japanvia tld

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 10 May 2026 at 00:01

Historical Analysis & Change Tracking

rnb.co.jp

RNB 南海放送 ～私たちは、愛媛主義

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

rnb.co.jp

RNB 南海放送～私たちは、愛媛主義