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tv-tower.co.jp

https://tv-tower.co.jp· First analyzed 20 May 2026· Updated 20 May 2026
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tv-tower.co.jp
Desktop screenshot of tv-tower.co.jp
Mobile screenshot of tv-tower.co.jp
Mobile

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Hosting Provider

SAKURA

IP Address

219.94.206.213

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS9371

Organization

SAKURA

Server

Nginx

Nameservers

ns1.dns.ne.jp.ns2.dns.ne.jp.

Performance

79

Core Web Vitals

Weight

First Contentful Paint
2.4 s10%
Speed Index
3.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7 MB
75 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
SAKURA

Technology Stack

8 Technologies Detected

Libraries

1
jQueryv3.5.1

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

Customer Support

1
Zendesk

SEO Analysis

D48/100
14
8
3
Meta Tags4/15
Content8/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
T
tv-tower.co.jptv-tower.co.jp

さっぽろテレビ塔

No description available for this page.

Title Length8 chars

Recommended: 50-60 chars (~49px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (39/51) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

121 URLs

robots.txt

1 rules

Allows all crawlers

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

F38/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
0/25
Citation
6/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
def. lists
Text ratio:1%
Words:243
Token eff.:Too Short
Sections/1K:70
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary70w
Descriptive Headingsavg 1.4w
Canonical URL
Open Graph0/3
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.
C
61/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
5/20
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
9/15
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.
6/100
F
886 mg
CO₂e / view
7.0 MB
Page Weight
5%
Cleaner Than
New Visitor
1.01 g
vs
Returning (cached)
506 mg
Annual (10K/mo)
106.3 kg
Emission Segments
Data Center
198 mg
Network
213 mg
Device
475 mg
Resource Breakdown
JavaScript
175.5 KB
Images
1.7 MB
CSS
4.7 MB
Fonts
121.2 KB
HTML
293.2 KB
Green Hosting Not Verified
SAKURA
9 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

176d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

06.11.2025

Valid Until

12.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.tv-tower.co.jptv-tower.co.jp

SHA-256 Fingerprint

FA:7A:F9:C0:30:BE:2B:A1:DC:53:7D:69:83:D0:BE:6D:93:60:A2:5C...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-type
text/html; charset=UTF-8
date
Wed, 20 May 2026 13:20:18 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
pragma
no-cache
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

tv-tower.co.jp

Domain Information

tv-tower.co.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
D
58/100
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=1.0
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Noto Sans JP

WCAG Partial
55/100
Readability
/30
13/30

13px · LH 1.94

Hierarchy
/20
11/20

1.23x ratio · ✓ H1→H6

WCAG
/25
13/25

3.56:1 min contrast

Performance
/25
18/25

1 font · 4 req

Heading Font

Noto Sans JP

Sans16px

Body Font

Noto Sans JP

Sans13px

Contrast Ratio

3.56:1

17 issues

Reading Comfort

~45 CPL

Optimal (45–75)
16px
h1
33px
h2
29px
h3
21px
h4
13px
p
Minor Third
Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (1.94). 1.4–1.6 is optimal for body text.

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

❌ Very complex text: Flesch score 30/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 3.6:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

GGoogle FontsFlesch 30

Color Palette

15 unique colors
Light
#fffae0
Primary· 12.799999999999999%
#ffe2b9
Accent· 9.9%
#566599
Secondary· 8.6%
#7f99da
Accent· 8.2%
#f1c8cf
Accent· 8%
#202a45
Secondary· 7.1%
#3e4b70
Secondary· 6.7%
#46bac2
Secondary· 6.6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Twitter/X WidgetsFree

Social widgets and sharing tools

2

Categories

3

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

14 Resources

6
Scripts
8
Styles
2
Async
0
Defer

Top Script Sources

js(4)google-analytics.com(1)googletagmanager.com(1)

Website Identity

tv-tower.co.jp

Location detected: 🇯🇵 Japanvia tld
ja

Sponsored

Last analyzed: 20 May 2026 at 13:21

Historical Analysis & Change Tracking