tezuka.co.jp

https://tezuka.co.jp· First analyzed 21 May 2026· Updated 21 May 2026

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tezuka.co.jp

Mobile

Sponsored

Hosting Provider

NHN Techorus Corp

IP Address

203.104.106.98

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Minato, Japan

ASN

AS17707

Organization

NHN Techorus Corp

Server

Apache

Nameservers

dns1.sys.jpdirect.jp.dns2.sys.jpdirect.jp.dns3.sys.jpdirect.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.0 s10%

Speed Index

2.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.4 MB

45 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NHN Techorus Corp

Technology Stack

6 Technologies Detected

Libraries

Analytics

Web Servers

Languages

SEO Analysis

D42/100

Meta Tags5/15

Content7/12

Headings4/8

Technical8/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

tezuka.co.jptezuka.co.jp

手塚プロダクション

手塚プロダクション公式WEBサイトです。

Title Length9 chars

Recommended: 50-60 chars (~55px / 580px)

Description Length20 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (16/28) — critical for accessibility and SEO

12 issues found

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Local SEO

Local Search Readiness

3/100

Poor

1 14 2

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

Sponsored

AI & LLM Readiness

F28/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

3/25

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:10%

Words:79

Token eff.:Too Short

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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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.

59/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

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

4/15

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.

13/100

304 mg

CO₂e / view

2.4 MB

Page Weight

30%

Cleaner Than

New Visitor

347 mg

Returning (cached)

174 mg

Annual (10K/mo)

36.4 kg

Emission Segments

Data Center

68 mg

Network

73 mg

Device

163 mg

Resource Breakdown

JavaScript

68.6 KB

Images

2.2 MB

CSS

74.1 KB

HTML

10.5 KB

Green Hosting Not Verified

NHN Techorus Corp

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

20%Critical

No SSL

No WAF

N/A

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 21:43:30 GMT

keep-alive

timeout=5, max=50

server

Apache/2.2.15 (CentOS)

strict-transport-security

max-age=315360000;

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

spam-tezuka.in.tmems-jp.trendmicro.com

Domain Information

tezuka.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.

36/100

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=1020

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Century Gothic

WCAG Fail

50/100

Readability

/30

15/30

13px · LH 1.54

Hierarchy

/20

9/20

1.08x ratio

WCAG

/25

12/25

2.59:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Century Gothic

Sans14px

Body Font

Century Gothic

Sans13px

Contrast Ratio

2.59:1

50 issues

Reading Comfort

Single Font Family

left aligned

14px

13px

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

✅ Optimal line spacing: 1.54 ratio (ideal range 1.4–1.6).

❌ Low contrast: 50 elements fail WCAG AA (min 2.6:1). Increase text/background contrast.

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

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

Buy on MyFonts

Color Palette

11 unique colors

6.68:1 AA Light

#ffffff

Background· 33.8%

#585d5f

Other· 5.4%

#b9aea2

Primary· 10.6%

#122027

Secondary· 6.5%

#423631

Secondary· 6.1%

#8c725a

Secondary· 5.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)googletagmanager.com(1)ajax.googleapis.com(1)

Website Identity

tezuka.co.jp

Location detected: 🇯🇵 Japanvia tld

Sponsored

Last analyzed: 21 May 2026 at 21:44

Historical Analysis & Change Tracking