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bleague.jp

https://bleague.jp· First analyzed 11 May 2026· Updated 11 May 2026
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bleague.jp
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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

46.51.244.145

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Nginx

CDN

Fastly

Nameservers

ns-86.awsdns-10.com.ns-1062.awsdns-04.org.ns-1756.awsdns-27.co.uk.ns-687.awsdns-21.net.

Performance

91

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
522 KB
250 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms

Technology Stack

8 Technologies Detected

UI Components

2
SwiperSlick Carousel

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

D54/100
17
11
1
Meta Tags7/15
Content8/12
Headings3/8
Technical16/25
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social4/5
Freshness0/4
Mobile2/4
Indexability3/3
B
bleague.jpbleague.jp

B.LEAGUE（Bリーグ）公式サイト​

男子プロバスケットボールリーグ、B.LEAGUE（Bリーグ）。試合日程・結果、最新の順位・成績、チーム・選手データなど、B.LEAGUEの充実した情報をご案内。

Title Length20 chars

Recommended: 50-60 chars (~124px / 580px)

Description Length80 chars

Recommended: 120-160 chars

Issues (1)

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

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

16 rules

Local SEO

Local Search Readiness

10/100
Poor
3 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

F37/100
Bot Access
20/25
Machine Read.
11/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:2%
Words:1,541
Token eff.:Optimal
Sections/1K:3.9
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.6w
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...
Upgrade to view recommendations

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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.
A
81/100
13
Passed
3
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
73/100
A
53 mg
CO₂e / view
522.0 KB
Page Weight
80%
Cleaner Than
New Visitor
60 mg
vs
Returning (cached)
30 mg
Annual (10K/mo)
6.3 kg
Emission Segments
Data Center
3 mg
Network
16 mg
Device
35 mg
Resource Breakdown
JavaScript
235.8 KB
Images
172.2 KB
HTML
48.0 KB
Other
66.0 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

96%Excellent
Static / Informational

HTTPS

No WAF

38d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2+H3

Valid From

21.03.2026

Valid Until

19.06.2026

Subject Alternative Names (17)

altiri.jpr-zephyr.comwww.89ers.jpwww.albirex.comwww.alvark-tokyo.jpwww.b-warriors.netwww.bleague.jpwww.evessa.com+9 more

SHA-256 Fingerprint

31:25:09:22:69:96:CF:2B:6B:FB:B2:01:B0:FA:52:47:5C:C3:D2:B4...

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HTTP Headers

Developer Console

accept-ranges
bytes
age
494
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...
cache-control
⚪ Custom(s-maxage=1800, stale-while-revalidate=1800, stale-if-error=8...)
content-encoding
⚡ Brotli(br)
content-length
48846
Good Warning Issue

Email Infrastructure

Google Workspace

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com
aspmx3.googlemail.com
alt1.aspmx.l.google.com
aspmx2.googlemail.com

+1 more

Domain Information

bleague.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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.
C
60/100
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, user-scalable=no
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

ヒラギノ角ゴ pro w3

WCAG Partial
60/100
Readability
/30
11/30

10px · LH --

Hierarchy
/20
17/20

3.2x ratio

WCAG
/25
16/25

1:1 min contrast

Performance
/25
16/25

2 fonts

Heading Font

ヒラギノ角ゴ pro w3

Sans32px

Body Font

ヒラギノ角ゴ pro w3

Sans10px

Contrast Ratio

1:1

36 issues

Reading Comfort

~43 CPL

Narrow lines
32px
h1
22px
h2
30px
h3
18px
h4
10px
p

❌ Critical: 10px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Partial contrast: 36 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

✅ Lean font stack: 2 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 60

Color Palette

7 unique colors
2.04:1 Fail Dark
#676e76
Other· 34.300000000000004%
#ada09d
Secondary· 6.5%
#27303a
Primary· 27.400000000000002%
#100a0f
Secondary· 9.8%
#582b2f
Secondary· 4.6%

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

30 Resources

20
Scripts
10
Styles
8
Async
0
Defer

Top Script Sources

bleague.bl.kuroco-img.app(6)googletagmanager.com(3)cdn.jsdelivr.net(3)unpkg.com(2)s.yjtag.jp(1)

Website Identity

bleague.jp

Location detected: 🇯🇵 Japanvia tld
📧 Google Workspaceja

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Last analyzed: 11 May 2026 at 20:37

Historical Analysis & Change Tracking