keiseibus.co.jp

https://keiseibus.co.jp· First analyzed 18 May 2026· Updated 18 May 2026

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keiseibus.co.jp

Mobile

Sponsored

Hosting Provider

SAKURA

IP Address

219.94.215.237

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS9371

Organization

SAKURA

Server

Nginx

CDN

Nameservers

ns018-xjsv6wnct4ylz4li.x.d-53.net.ns018-xjsv6wnct4ylz4li.x.d-53.info.ns018-xjsv6wnct4ylz4li.x.d-53.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.6 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.3 MB

79 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.5

cms

keisei-bus-groupv1.0Custom

by Airily

Technology Stack

14 Technologies Detected

Plugins

Contact Form 7

Responsive Lightbox User Access Manager Ewww Image Optimizer

Libraries

jQueryv3.6.0

Underscore.js Lightbox

Analytics

UI Components

Other

CSS Frameworks

Fonts

Web Servers

SEO Analysis

C63/100

Meta Tags4/15

Content10/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

keiseibus.co.jpkeiseibus.co.jp

京成電鉄バスグループ

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~62px / 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 (75/89) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

17/100

Poor

5 12

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

Sponsored

AI & LLM Readiness

D50/100

Bot Access

20/25

Machine Read.

15/25

Schema Data

6/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:7%

Words:545

Token eff.:Optimal

Sections/1K:5.5

Depth:1/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbList

Citation Readiness

Opening Summary17w

Descriptive Headingsavg 2.3w

Canonical URL

Open Graph1/3

Twitter Card2/3

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.

62/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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.

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.

31/100

288 mg

CO₂e / view

2.3 MB

Page Weight

50%

Cleaner Than

New Visitor

329 mg

Returning (cached)

164 mg

Annual (10K/mo)

34.5 kg

Emission Segments

Data Center

64 mg

Network

69 mg

Device

154 mg

Resource Breakdown

JavaScript

295.5 KB

Images

1.3 MB

CSS

315.5 KB

Fonts

207.7 KB

HTML

141.1 KB

Other

58.3 KB

Green Hosting Not Verified

SAKURA

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.03.2026

Valid Until

24.06.2026

Subject Alternative Names (1)

www.keiseibus.co.jp

SHA-256 Fingerprint

21:DC:3B:D2:A4:70:8A:09:C9:E4:EB:FF:C7:18:0E:5C:C5:79:5D:C0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

105

cache-control

⚪ Custom(s-maxage=200)

content-length

144148

content-type

text/html; charset=UTF-8

date

Mon, 18 May 2026 17:15:05 GMT

link

<https://www.keiseibus.co.jp/wp-json/>; rel="https://api.w.o...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.securemx.jp

Domain Information

keiseibus.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.

57/100

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,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Noto Sans JP

WCAG Partial

64/100

Readability

/30

19/30

19px · LH --

Hierarchy

/20

8/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

20/25

1 font · 1 req

Heading Font

Noto Sans JP

Sans

Body Font

Noto Sans JP

Sans19px

Contrast Ratio

1:1

20 issues

Reading Comfort

~41 CPL

Narrow lines

24px

19px

✅ Excellent readability: 19px body text is ideal for all devices.

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.0:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

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

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

GGoogle FontsFluid Type (rem)

Color Palette

12 unique colors

4.07:1 AA Large Light

#979090

Other· 21.5%

#353138

Other· 7%

#191922

Secondary· 5.4%

#c2b0a8

Secondary· 5.1%

#773a4e

Secondary· 4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

keiseibus.co.jp(14)googletagmanager.com(1)unpkg.com(1)ajax.googleapis.com(1)cdn.jsdelivr.net(1)

Website Identity

京成電鉄バスグループ

Organization

www.keiseibus.co.jp/

Location detected: 🇯🇵 Japanvia tld

Sponsored

Last analyzed: 18 May 2026 at 17:15

Historical Analysis & Change Tracking