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csj.jp

https://csj.jp· First analyzed 08 May 2026· Updated 08 May 2026
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csj.jp
Desktop screenshot of csj.jp
Mobile screenshot of csj.jp
Mobile

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Hosting Provider

IP Address

218.45.242.8

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS17676

Organization

IPR

Server

Apache

CDN

CloudFront

Nameservers

dns3.odn.ne.jp.ns.chemistry.or.jp.

Performance

88

Core Web Vitals

Weight

First Contentful Paint
1.6 s10%
Speed Index
2.1 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
376 KB
38 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

6 Technologies Detected

SEO Analysis

D48/100
13
8
2
Meta Tags4/15
Content8/12
Headings7/8
Technical8/21
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
csj.jpcsj.jp

公益社団法人日本化学会

No description available for this page.

Title Length11 chars

Recommended: 50-60 chars (~68px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • Missing meta description — important for click-through rates in SERPs
  • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

Local SEO

Local Search Readiness

6/100
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

F28/100
Bot Access
20/25
Machine Read.
3/25
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
nav
Text ratio:6%
Words:180
Token eff.:Too Short
Sections/1K:77.8
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 2w
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
68/100
9
Passed
4
Critical
1
Warnings
Images & Alt Text
15/20
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
10/15
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...

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.
40/100
A
47 mg
CO₂e / view
376.5 KB
Page Weight
90%
Cleaner Than
New Visitor
53 mg
vs
Returning (cached)
27 mg
Annual (10K/mo)
5.6 kg
Emission Segments
Data Center
10 mg
Network
11 mg
Device
25 mg
Resource Breakdown
JavaScript
118.4 KB
Images
112.7 KB
CSS
111.6 KB
HTML
33.8 KB
Green Hosting Not Verified
IPR
5 recommendations
  • Carbon footprint recommendation preview...
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

270d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.02.2026

Valid Until

02.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.chemistry.or.jpchemistry.or.jp

SHA-256 Fingerprint

50:7F:00:4E:1D:C8:9E:3E:59:46:26:C1:73:DD:65:09:55:96:5F:38...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

accept-ranges
bytes
connection
keep-alive
content-type
text/html
date
Fri, 08 May 2026 10:53:34 GMT
server
Apache
transfer-encoding
chunked
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

Domain Information

csj.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.
F
26/100
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.
5 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

ヒラギノ角ゴ Pro W3

WCAG Partial
51/100
Readability
/30
18/30

14px · LH 1.50

Hierarchy
/20
10/20

1.43x ratio

WCAG
/25
13/25

1.27:1 min contrast

Performance
/25
10/25

3 fonts

Heading Font

ヒラギノ角ゴ Pro W3

Sans20px

Body Font

ヒラギノ角ゴ Pro W3

Sans14px

Contrast Ratio

1.27:1

39 issues

Reading Comfort

Single Font Family

left aligned
20px
h1
32px
h2
14px
h3
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 39 elements below WCAG AA threshold (min 1.3:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

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

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

Color Palette

7 unique colors
Light
#ffffff
Background· 31.400000000000002%
#014c7c
Primary· 15.2%
#d2dcd3
Secondary· 9.2%
#00325b
Accent· 7.1%
#7d93a6
Secondary· 5.6%
#373251
Secondary· 2.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

7 Resources

6
Scripts
1
Styles
1
Async
0
Defer

Top Script Sources

local(4)ajax.googleapis.com(1)googletagmanager.com(1)

Website Identity

csj.jp

Location detected: 🇯🇵 Japanvia tld
ja

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Last analyzed: 08 May 2026 at 10:54

Historical Analysis & Change Tracking