ddo.jp

https://ddo.jp· First analyzed 22 Apr 2026· Updated 22 Apr 2026

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ddo.jp

Mobile

Sponsored

Hosting Provider

SAKURA Internet Inc.

IP Address

153.120.6.153

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Ishikari, Japan

ASN

AS7684

Organization

SAKURA Internet Inc.

Server

Apache

Nameservers

ns2.ddo.jp.ns.ddo.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

714 ms10%

Speed Index

928 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

35 KB

6 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

SAKURA Internet Inc.

Technology Stack

1 Technologies Detected

Web Servers

Apache

SEO Analysis

F35/100

Meta Tags4/15

Content8/12

Headings0/8

Technical5/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ddo.jpddo.jp

Dynamic DO!.jp - ダイナミックDNS -

No description available for this page.

Title Length28 chars

Recommended: 50-60 chars (~172px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• 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 (3/4) — critical for accessibility and SEO

13 issues found

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Local SEO

Local Search Readiness

5/100

Poor

2 13 2

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

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AI & LLM Readiness

F24/100

Bot Access

20/25

Machine Read.

1/25

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

Text ratio:10%

Words:144

Token eff.:Too Short

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 (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.

36/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

3/20

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

Forms & Inputs

3/15

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

1/15

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

5 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.

50/100

A+

4 mg

CO₂e / view

35.1 KB

Page Weight

95%

Cleaner Than

New Visitor

5 mg

Returning (cached)

3 mg

Annual (10K/mo)

516 g

Emission Segments

Data Center

1 mg

Network

1 mg

Device

2 mg

Resource Breakdown

JavaScript

1.1 KB

Images

20.1 KB

HTML

13.9 KB

Green Hosting Not Verified

SAKURA Internet Inc.

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

297d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

SECOM Trust Systems Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

28.01.2026

Valid Until

14.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

ddo.jp

SHA-256 Fingerprint

E3:20:F7:44:8F:34:C1:54:80:5D:A3:90:18:C6:7C:44:A0:2E:C8:4F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

Keep-Alive

content-type

text/html;charset=euc-jp

date

Wed, 22 Apr 2026 16:53:58 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

keep-alive

timeout=5, max=100

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

ms.furu.jp

ms2.furu.jp

Domain Information

ddo.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.

31/100

Not Mobile Friendly

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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

63/100

Readability

/30

23/30

16px · LH --

Hierarchy

/20

9/20

WCAG

/25

17/25

1.15:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Open Sans

Body Font

Open Sans

Sans16px

Contrast Ratio

1.15:1

25 issues

Reading Comfort

Single Family

left aligned

16px

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

✅ Easy to read: Flesch score 81/100 — accessible to general audiences.

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 1.1:1).

✅ 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 MyFontsFlesch 81

Color Palette

6 unique colors

Light

#ffffff

Background· 42.10000000000001%

#31802f

Secondary· 46.70000000000001%

#245c23

Primary· 3.6%

#64a063

Secondary· 3.1%

#3e913e

Secondary· 2.9%

#a7cda7

Secondary· 1.8%

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

jsfunc.js?2(1)

Website Identity

ddo.jp

[email protected]

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 22 Apr 2026 at 16:55

Historical Analysis & Change Tracking