haseko.co.jp

https://haseko.co.jp· First analyzed 17 May 2026· Updated 17 May 2026

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haseko.co.jp

Mobile

Sponsored

Hosting Provider

ETRADE

IP Address

203.216.206.212

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Minato, Japan

ASN

AS9607

Organization

ETRADE

Server

Nginx

Nameservers

ns40.haseko.co.jp.ns30.haseko.co.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.8 s10%

Speed Index

3.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.8 MB

84 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

ETRADE

Technology Stack

7 Technologies Detected

Analytics

Libraries

UI Components

Fonts

Tag Managers

Web Servers

SEO Analysis

C63/100

Meta Tags10/15

Content10/12

Headings3/8

Technical14/21

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social3/5

Freshness2/4

Mobile4/4

Indexability3/3

haseko.co.jphaseko.co.jp

株式会社長谷工コーポレーション｜住まいと暮らしの創造企業グループ

マンションの設計・施工からマンション管理、リフォーム、大規模修繕、長寿命化、建替えまで手掛ける長谷工コーポレーションのオフィシャルサイトです。

Title Length32 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length71 chars

Recommended: 120-160 chars

Issues (1)

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

8 issues found

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Local SEO

Local Search Readiness

6/100

Poor

2 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

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. listsheader/footer

Text ratio:6%

Words:396

Token eff.:Optimal

Sections/1K:2.5

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

69/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

11/20

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.

9/100

605 mg

CO₂e / view

4.8 MB

Page Weight

15%

Cleaner Than

New Visitor

692 mg

Returning (cached)

346 mg

Annual (10K/mo)

72.6 kg

Emission Segments

Data Center

135 mg

Network

145 mg

Device

325 mg

Resource Breakdown

JavaScript

278.5 KB

Images

3.1 MB

CSS

1.3 MB

HTML

57.3 KB

Other

10.7 KB

Green Hosting Not Verified

ETRADE

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

106d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

06.08.2025

Valid Until

31.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.haseko.co.jphaseko.co.jp

SHA-256 Fingerprint

26:3B:2F:37:3E:FB:E8:71:85:8A:83:3A:B8:DC:1F:ED:22:B1:64:2B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-type

text/html; charset=UTF-8

date

Sun, 17 May 2026 01:11:57 GMT

server

nginx

transfer-encoding

chunked

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.securemx.jp

Domain Information

haseko.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.

48/100

Not 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=1240

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Noto Sans JP

WCAG Partial

59/100

Readability

/30

16/30

15px · LH 1.80

Hierarchy

/20

8/20

WCAG

/25

19/25

1.61:1 min contrast

Performance

/25

16/25

1 font

Heading Font

Noto Sans JP

Sans

Body Font

Noto Sans JP

Sans15px

Contrast Ratio

1.61:1

1 issue

Reading Comfort

Single Font Family

left aligned

40px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.6:1).

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

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

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

Buy on MyFonts

Color Palette

9 unique colors

6.95:1 AA Light

#ffffff

Background· 47.3%

#585962

Other· 7.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)googletagmanager.com(5)b92.yahoo.co.jp(2)d.line-scdn.net(1)bs.nakanohito.jp(1)

Website Identity

haseko.co.jp

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 17 May 2026 at 01:12

Historical Analysis & Change Tracking