jvcmusic.co.jp

https://jvcmusic.co.jp· First analyzed 26 Apr 2026· Updated 26 Apr 2026

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jvcmusic.co.jp

Mobile

Sponsored

Hosting Provider

Architectural Systems Inc.

IP Address

133.242.240.248

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS7684

Organization

Architectural Systems Inc.

Server

Apache

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.7 MB

84 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Architectural Systems Inc.

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

D59/100

Meta Tags10/15

Content9/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

jvcmusic.co.jpjvcmusic.co.jp

ビクターエンタテインメント | Victor Entertainment

ビクターエンタテインメント公式サイト。所属アーティストの最新ニュースやリリース情報、ライブ・イベント情報、メディア出演情報からプレイリスト、SNS情報まで幅広く掲載しています。

Title Length36 chars

Recommended: 50-60 chars (~219px / 580px)

Description Length88 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (29/49) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

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

F33/100

Bot Access

20/25

Machine Read.

4/25

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

header/footer

Text ratio:5%

Words:265

Token eff.:Too Short

Sections/1K:34

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 2.3w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

59/100

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

7/15

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

0/15

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

5 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.

9/100

723 mg

CO₂e / view

5.7 MB

Page Weight

Cleaner Than

New Visitor

826 mg

Returning (cached)

413 mg

Annual (10K/mo)

86.7 kg

Emission Segments

Data Center

161 mg

Network

174 mg

Device

388 mg

Resource Breakdown

JavaScript

298.0 KB

Images

2.8 MB

CSS

2.6 MB

HTML

31.1 KB

Green Hosting Not Verified

Architectural Systems Inc.

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

306d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

27.01.2026

Valid Until

26.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jvcmusic.co.jpjvcmusic.co.jp

SHA-256 Fingerprint

F5:95:9F:54:0B:A7:1A:16:44:F7:5D:68:3D:07:B7:06:DC:C2:BB:69...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-language

en-GB

content-type

text/html;charset=UTF-8

date

Sun, 26 Apr 2026 12:49:35 GMT

keep-alive

timeout=30, max=99

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

jvcmusic.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.

65/100

Mobile Friendly

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

ヒラギノ角ゴ Pro

WCAG Partial

47/100

Readability

/30

8/30

12px · LH 1.70

Hierarchy

/20

8/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

ヒラギノ角ゴ Pro

Sans

Body Font

ヒラギノ角ゴ Pro

Sans12px

Contrast Ratio

1:1

7 issues

Reading Comfort

~133 CPL

Too wide

14px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

❌ Very long lines: ~133 chars/line causes eye strain. Add max-width constraint.

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 46

Color Palette

12 unique colors

Light

#ffffff

Background· 32.800000000000004%

#080506

Primary· 8%

#bfa48b

Secondary· 7.3%

#7c5857

Secondary· 7.3%

#1e3d50

Secondary· 4.9%

#842342

Accent· 4.7%

#5887a9

Secondary· 4.3%

#d6c393

Secondary· 3.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)youtube.com(2)googletagmanager.com(2)

Website Identity

jvcmusic.co.jp

Location detected: 🇯🇵 Japanvia tld

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok

Sponsored

Last analyzed: 26 Apr 2026 at 12:50

Historical Analysis & Change Tracking