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dhc.co.jp

https://dhc.co.jp· First analyzed 04 May 2026· Updated 04 May 2026
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dhc.co.jp
Desktop screenshot of dhc.co.jp
Mobile screenshot of dhc.co.jp
Mobile

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Hosting Provider

IP Address

180.10.249.53

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Minamishinagawa, Japan

ASN

AS4713

Organization

NTT Communications Corporation

Server

Apache

Nameservers

ns01.dhc.co.jp.ns02.dhc.co.jp.ek-mail01.cobuy.jp.ek-mail02.cobuy.jp.

Performance

90

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%
12.6 MB
250 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
NTT Communications Corporation

Technology Stack

13 Technologies Detected

SEO Analysis

C64/100
18
9
1
Meta Tags10/15
Content10/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile4/4
Indexability3/3
D
dhc.co.jpdhc.co.jp

化粧品・健康食品・ダイエットの通販|DHC公式オンラインショップ

DHC公式通販サイト。スキンケア、ダイエット、サプリメント、アパレルなど税込3,780円以上で送料無料。期間限定セールやポイントサービス実施中!

Title Length32 chars

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

Description Length72 chars

Recommended: 120-160 chars

Issues (1)

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

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

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.

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AI & LLM Readiness

F34/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
7/25

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:3%
Words:2,589
Token eff.:Optimal
Sections/1K:0.8

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1w
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.
C
62/100
11
Passed
5
Critical
1
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • Accessibility recommendation preview...

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.
18/100
F
1.60 g
CO₂e / view
12.6 MB
Page Weight
5%
Cleaner Than
New Visitor
1.83 g
vs
Returning (cached)
913 mg
Annual (10K/mo)
191.7 kg
Emission Segments
Data Center
357 mg
Network
383 mg
Device
857 mg
Resource Breakdown
JavaScript
329.4 KB
Images
11.9 MB
CSS
385.8 KB
HTML
52.5 KB
Green Hosting Not Verified
NTT Communications Corporation
8 recommendations
  • Carbon footprint recommendation preview...
F

Security Score

31%Critical
Interactive

HTTPS

No WAF

259d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

18.12.2025

Valid Until

18.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.dhc.co.jp

SHA-256 Fingerprint

3A:29:F2:43:76:15:7F:69:D1:88:1B:F3:15:18:8B:3D:34:1C:CE:2D...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 4 Hours(max-age=14400)
connection
close
content-length
477
content-type
text/html
date
Mon, 04 May 2026 22:38:26 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

dhc-co-jp.mail.protection.outlook.com

Domain Information

dhc.co.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
B
75/100
Mobile Friendly7 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
1 recommendation
  • Mobile compatibility recommendation preview...

Typography & Readability

Arial

WCAG Partial
64/100
Readability
/30
20/30

18px · LH 1.45

Hierarchy
/20
8/20
WCAG
/25
15/25

4.2:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans18px

Contrast Ratio

4.2:1

9 issues

Reading Comfort

~1697507 CPL

Too wide
24px
h2
22px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.45 ratio (ideal range 1.4–1.6).

❌ Very long lines: ~1697507 chars/line causes eye strain. Add max-width constraint.

⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 4.2:1).

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

Fluid TypeFlesch 40

Color Palette

11 unique colors
Light
#ffffff
Background· 47.1%
#d11732
Primary· 6.6%
#cdd9ca
Secondary· 6.6%
#8fc1b0
Secondary· 6.1%
#c49991
Secondary· 5.7%
#77949d
Secondary· 5.7%
#24162a
Secondary· 5.3%
#e9e5bb
Accent· 5%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

3

User behavior and product analytics

Advertising

1

Ad platforms and retargeting pixels

Reviews & Social Proof

1

Customer reviews and testimonials

3

Categories

5

Total Tools

0

Enterprise

2

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

24 Resources

20
Scripts
4
Styles
20
Async
0
Defer

Top Script Sources

cdn.hera.d2c.ne.jp(9)analytics.tiktok.com(3)cdn.microad.jp(3)googletagmanager.com(2)d.line-scdn.net(2)

Website Identity

dhc.co.jp

Location detected: 🇯🇵 Japanvia tld
📧 Microsoft 365ja

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Last analyzed: 04 May 2026 at 22:39

Historical Analysis & Change Tracking