tezukaosamu.net

https://tezukaosamu.net· First analyzed 06 May 2026· Updated 06 May 2026

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tezukaosamu.net

Mobile

Sponsored

Hosting Provider

NHN Techorus Corp

IP Address

203.104.106.94

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Minato, Japan

ASN

AS17707

Organization

NHN Techorus Corp

Server

Apache

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

11.5 MB

92 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NHN Techorus Corp

Technology Stack

7 Technologies Detected

Analytics

Libraries

UI Components

Fonts

Web Servers

Languages

SEO Analysis

D56/100

Meta Tags5/15

Content7/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

tezukaosamu.nettezukaosamu.net

手塚治虫 TEZUKA OSAMU OFFICIAL

手塚治虫公式WEBサイトです。マンガ、アニメ、キャラクター、商品、ニュース、イベントなど様々な情報をご紹介

Title Length26 chars

Recommended: 50-60 chars (~165px / 580px)

Description Length53 chars

Recommended: 120-160 chars

Issues (1)

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

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

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

F36/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

11/25

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. listsnavheader/footer

Text ratio:6%

Words:74

Token eff.:Too Short

Sections/1K:20

Depth:3/5

Structured Data

Microdata

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

71/100

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

9/15

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.

5/100

1.46 g

CO₂e / view

11.5 MB

Page Weight

Cleaner Than

New Visitor

1.66 g

Returning (cached)

832 mg

Annual (10K/mo)

174.7 kg

Emission Segments

Data Center

325 mg

Network

349 mg

Device

781 mg

Resource Breakdown

JavaScript

166.5 KB

Images

8.6 MB

CSS

2.7 MB

Fonts

29.6 KB

HTML

17.3 KB

Green Hosting Not Verified

NHN Techorus Corp

9 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

No SSL

No WAF

N/A

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html

date

Wed, 06 May 2026 12:41:36 GMT

keep-alive

timeout=2, max=99

server

Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.2.34

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.tezukaosamu.net

Domain Information

tezukaosamu.net

Domain Age

17y 9m

Created

23.07.2008

Expires

23.07.2026

Last Updated

23.07.2025

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.

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=device-width,initial-scale=1.0

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Rounded Mplus 1c + ヒラギノ角ゴ Pro W3

WCAG Partial

62/100

Readability

/30

26/30

16px · LH 1.60

Hierarchy

/20

7/20

WCAG

/25

14/25

1.61:1 min contrast

Performance

/25

15/25

2 fonts · 3 req

Heading Font

Rounded Mplus 1c

Sans

Body Font

ヒラギノ角ゴ Pro W3

Sans16px

Contrast Ratio

1.61:1

35 issues

Reading Comfort

~38 CPL

Narrow lines

40px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 35 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: 2 font families keeps load times fast.

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

GGoogle Fonts Buy on MyFonts

Color Palette

14 unique colors

5.91:1 AA Light

#f0f0f2

Background· 13.600000000000001%

#655958

Other· 7.9%

#21252e

Primary· 6.6%

#554142

Secondary· 6.6%

#dfe0e7

Secondary· 6%

#409195

Secondary· 5.5%

#2b3f46

Secondary· 5.2%

#b7c7cc

Secondary· 4.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)googletagmanager.com(1)

Website Identity

tezukaosamu.net

17 years old

Location detected: 🇯🇵 Japanvia ip

Japan Registry Services Co., Ltd.ja

Social Profiles

Facebook X (Twitter)YouTube

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Last analyzed: 06 May 2026 at 12:42

Historical Analysis & Change Tracking