tv-sdt.co.jp

https://tv-sdt.co.jp· First analyzed 16 May 2026· Updated 16 May 2026

Export

tv-sdt.co.jp

Mobile

Sponsored

Hosting Provider

LINK, Inc.

IP Address

210.140.115.80

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS4694

Organization

LINK, Inc.

Server

Apache

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.5 MB

104 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Google AdSense

Libraries

UI Components

CSS Frameworks

Tag Managers

Web Servers

Languages

SEO Analysis

D42/100

Meta Tags7/15

Content3/12

Headings0/8

Technical11/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile3/4

Indexability3/3

tv-sdt.co.jptv-sdt.co.jp

Daiichi-TV

Daiichi-TV公式ホームページ。日本テレビ系列局。番組情報、ニュース、イベント、アナウンサー、プレゼントなど、Daiichi-TVに関する情報をお届けします。

Title Length10 chars

Recommended: 50-60 chars (~55px / 580px)

Description Length82 chars

Recommended: 120-160 chars

Issues (3)

• Very thin content (36 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (100/104) — critical for accessibility and SEO

10 issues found

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Local SEO

Local Search Readiness

3/100

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

F36/100

Bot Access

20/25

Machine Read.

7/25

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

Text ratio:1%

Words:468

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

83/100

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

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

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.

4/100

447 mg

CO₂e / view

3.5 MB

Page Weight

15%

Cleaner Than

New Visitor

510 mg

Returning (cached)

255 mg

Annual (10K/mo)

53.6 kg

Emission Segments

Data Center

100 mg

Network

107 mg

Device

240 mg

Resource Breakdown

JavaScript

273.1 KB

Images

3.1 MB

CSS

60.1 KB

HTML

41.6 KB

Other

17.8 KB

Green Hosting Not Verified

LINK, Inc.

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

168d

Certificate Details

Type

Organization Validated (OV)

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

07.05.2026

Valid Until

31.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.tv-sdt.co.jptv-sdt.co.jp

SHA-256 Fingerprint

A3:2D:58:AC:E7:56:28:E2:E3:19:94:A3:F0:F4:62:E3:70:2D:71:77...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

http://www.tv-sdt.co.jp

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Sat, 16 May 2026 05:30:43 GMT

keep-alive

timeout=5, max=100

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx03.active-w.net

mx02.active-w.net

mx01.active-w.net

Domain Information

tv-sdt.co.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.

76/100

Mobile Friendly2 breakpoints

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

游ゴシック体

WCAG Partial

60/100

Readability

/30

15/30

9px · LH 1.60

Hierarchy

/20

15/20

1.16x ratio · ✓ H1→H6

WCAG

/25

15/25

1:1 min contrast

Performance

/25

15/25

1 font · 1 req

Heading Font

游ゴシック体

Sans11px

Body Font

游ゴシック体

Sans9px

Contrast Ratio

1:1

12 issues

Reading Comfort

~66 CPL

Optimal (45–75)

11px

9px

❌ Critical: 9px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Optimal line length: ~66 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 1.0:1).

✅ 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.

Buy on MyFontsFluid Type

Color Palette

13 unique colors

10.78:1 AAA Light

#ffffff

Primary· 35.9%

#3f3d3e

Other· 5.6%

#d3eeee

Secondary· 13.899999999999999%

#cc9484

Secondary· 5.8%

#b8c7c2

Border· 5.8%

#ce4f80

Accent· 5.3%

#040405

Secondary· 5.1%

#f3ba4a

Accent· 4.8%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)local(3)pagead2.googlesyndication.com(2)cdn.millvi.com(2)google-analytics.com(1)

Website Identity

tv-sdt.co.jp

Location detected: 🇯🇵 Japanvia tld

Sponsored

Last analyzed: 16 May 2026 at 05:31

Historical Analysis & Change Tracking