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jva.or.jp

https://jva.or.jp· First analyzed 17 May 2026· Updated 17 May 2026
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jva.or.jp
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Hosting Provider

DIX Co., Ltd.

IP Address

153.122.67.178

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131921

Organization

DIX Co., Ltd.

Server

Apache

CDN

CloudFront

Nameservers

ns2.sgood.jp.ns1.sgood.jp.

Performance

89

Core Web Vitals

Weight

First Contentful Paint
1.5 s10%
Speed Index
2.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
20.3 MB
121 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
JVAv1.3Custom
by the WordPress team
View Theme

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.6.0

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

C61/100
17
9
1
Meta Tags7/15
Content12/12
Headings1/8
Technical16/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
J
jva.or.jpjva.or.jp

公益財団法人日本バレーボール協会

日本バレーボール協会の公式サイトです。バレーボール、ビーチバレーボール日本代表の最新情報に加え、国内・国際大会の日程と結果、バレともチケット、海外遠征の情報や写真も。

Title Length16 chars

Recommended: 50-60 chars (~99px / 580px)

Description Length83 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

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Crawlability

Sitemap

Type: index

28 URLs

28 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Local SEO

Local Search Readiness

7/100
Poor
3 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

D42/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
12/25

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. listsnav
Text ratio:5%
Words:1,340
Token eff.:Optimal
Sections/1K:3
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary242w
Descriptive Headingsavg 1.4w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
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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.
B
71/100
11
Passed
3
Critical
3
Warnings
Images & Alt Text
20/20
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
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.
4 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.
11/100
F
2.56 g
CO₂e / view
20.3 MB
Page Weight
5%
Cleaner Than
New Visitor
2.93 g
vs
Returning (cached)
1.47 g
Annual (10K/mo)
307.8 kg
Emission Segments
Data Center
573 mg
Network
616 mg
Device
1.38 g
Resource Breakdown
JavaScript
51.3 KB
Images
19.7 MB
CSS
50.9 KB
Fonts
266.8 KB
HTML
154.5 KB
Green Hosting Not Verified
DIX Co., Ltd.
10 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

51%Poor
Interactive

HTTPS

No WAF

286d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.01.2026

Valid Until

27.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.jva.or.jp

SHA-256 Fingerprint

7C:64:F1:FB:46:78:85:15:37:8E:2E:CD:BC:68:03:20:E4:64:77:BA...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-security-policy
frame-ancestors 'self';
content-type
text/html; charset=UTF-8
date
Sun, 17 May 2026 15:09:11 GMT
link
<https://www.jva.or.jp/wp-json/>; rel="https://api.w.org/"
server
Apache
via
1.1 28ce6a88a6e62c635eba40b2135f479c.cloudfront.net (CloudFr...
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

45

SPF
DKIM
DMARC

MX Records (1)

jva-or-jp.mail.protection.outlook.com

Domain Information

jva.or.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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
52/100
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, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

JVA Sans Bold + Yu Gothic

WCAG Partial
57/100
Readability
/30
25/30

16px · LH 1.50

Hierarchy
/20
7/20
WCAG
/25
9/25

1:1 min contrast

Performance
/25
16/25

3 fonts · 2 req

Heading Font

JVA Sans Bold

Sans

Body Font

Yu Gothic

Sans16px

Contrast Ratio

1:1

7 issues

Reading Comfort

Dual Sans-Serif

center aligned
60px
h3
34px
h4
16px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ 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.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle FontsBuy on MyFontsFlesch 64

Color Palette

14 unique colors
15.59:1 AAA Light
#ffffff
Background· 21.599999999999998%
#222425
Other· 5%
#daa68f
Secondary· 8.3%
#010000
Primary· 8.1%
#e9cdbf
Secondary· 7.6%
#d18678
Secondary· 7.2%
#ebf5e0
Accent· 6.7%
#2a89b7
Accent· 6.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

15 Resources

10
Scripts
5
Styles
3
Async
6
Defer

Top Script Sources

jva.or.jp(4)googletagmanager.com(2)support-widget.userlocal.jp(1)ajax.googleapis.com(1)cdn.jsdelivr.net(1)

Website Identity

jva.or.jp

Location detected: 🇯🇵 Japanvia tld
📧 Microsoft 365ja

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Last analyzed: 17 May 2026 at 15:09

Historical Analysis & Change Tracking