hosakatakeshi.com

https://hosakatakeshi.com· First analyzed 03 Jun 2026· Updated 03 Jun 2026

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hosakatakeshi.com

Mobile

Sponsored

Hosting Provider

CPI

IP Address

150.60.247.200

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS9597

Organization

CPI

Server

Apache

Nameservers

ns7.cpi.ad.jp.ns6.cpi.ad.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.3 MB

27 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CPI

Technology Stack

6 Technologies Detected

Analytics

Libraries

Other

Fonts

Web Servers

SEO Analysis

D50/100

Meta Tags10/15

Content8/12

Headings3/8

Technical8/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile4/4

Indexability3/3

hosakatakeshi.comhosakatakeshi.com

保坂猛建築都市設計事務所 [TAKESHI HOSAKA architects]

建築家保坂猛が主宰する建築設計事務所です。

Title Length40 chars

Recommended: 50-60 chars (~246px / 580px)

Description Length22 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (39/45) — critical for accessibility and SEO

12 issues found

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Local SEO

Local Search Readiness

10/100

Poor

3 12 2

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

Sponsored

AI & LLM Readiness

F32/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

5/25

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:4%

Words:157

Token eff.:Too Short

Sections/1K:235.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary135w

Descriptive Headingsavg 2.5w

Canonical URL

Open Graph1/3

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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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.

75/100

Passed

Critical

Warnings

Images & Alt Text

13/20

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

Semantic Structure

17/20

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

6/15

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

3 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.

28/100

416 mg

CO₂e / view

3.3 MB

Page Weight

30%

Cleaner Than

New Visitor

475 mg

Returning (cached)

238 mg

Annual (10K/mo)

49.9 kg

Emission Segments

Data Center

93 mg

Network

100 mg

Device

223 mg

Resource Breakdown

JavaScript

68.1 KB

Images

3.0 MB

CSS

215.2 KB

HTML

4.9 KB

Other

34.2 KB

Green Hosting Not Verified

CPI

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Japan Registry Services Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.04.2026

Valid Until

02.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.hosakatakeshi.comhosakatakeshi.com

SHA-256 Fingerprint

D5:15:BE:2C:E1:58:58:7A:4E:6E:50:45:61:0E:CF:C1:84:67:71:C4...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

4674

content-type

text/html; charset=UTF-8

date

Wed, 03 Jun 2026 01:20:20 GMT

server

Apache

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

vlmx-air.secure.ne.jp

Domain Information

hosakatakeshi.com

Domain Age

22y 4m

Created

13.01.2004

Expires

13.01.2027

Last Updated

10.01.2026

Registrar

Japan Registry Services Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

51/100

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, initial-scale=1.0

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

游ゴシック

WCAG Partial

42/100

Readability

/30

7/30

13px · LH 2.46

Hierarchy

/20

8/20

1.23x ratio · ✓ H1→H6

WCAG

/25

12/25

1:1 min contrast

Performance

/25

15/25

2 fonts · 1 req

Heading Font

游ゴシック

Sans16px

Body Font

游ゴシック

Sans13px

Contrast Ratio

1:1

17 issues

Reading Comfort

~61 CPL

Optimal (45–75)

16px

24px

13px

Major Third

Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (2.46). 1.4–1.6 is optimal for body text.

✅ Optimal line length: ~61 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

Buy on MyFontsFlesch 0

Color Palette

6 unique colors

2.68:1 Fail Light

#ffffff

Background· 99.39999999999999%

#9e9e9e

Other· 0.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

hosakatakeshi.com(5).(2)googletagmanager.com(1)assets(1)

Website Identity