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gijutu.co.jp

https://gijutu.co.jp· First analyzed 01 Jun 2026· Updated 01 Jun 2026
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gijutu.co.jp
Desktop screenshot of gijutu.co.jp
Mobile screenshot of gijutu.co.jp
Mobile

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Hosting Provider

Server Hosting Service

IP Address

119.245.214.95

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Nakano City, Japan

ASN

AS2514

Organization

Server Hosting Service

Server

Apache

Nameservers

ns4.sphere.ad.jp.ns3.sphere.ad.jp.

Performance

94

Core Web Vitals

Weight

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

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Server Hosting Service

Technology Stack

1 Technologies Detected

Web Servers

1
Apache

SEO Analysis

D40/100
11
11
2
Meta Tags5/15
Content10/12
Headings6/8
Technical6/21
E-E-A-T0/7
Images1/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
G
gijutu.co.jpgijutu.co.jp

技術情報協会　セミナー　出版　雑誌　通信教育

技術者、研究開発者のためのセミナーのライブ配信、アーカイブ配信、書籍、雑誌の発刊、電子図書館の開館などで社会に貢献します。「技術情報協会」

Title Length22 chars

Recommended: 50-60 chars (~136px / 580px)

Description Length69 chars

Recommended: 120-160 chars

Issues (2)

  • • Most images missing alt text (73/73) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

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Local SEO

Local Search Readiness

0/100
Poor
15 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

F31/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
1/25

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:5%
Words:470
Token eff.:Optimal

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.
D
47/100
6
Passed
6
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
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
5/15
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.
4 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.
43/100
A
47 mg
CO₂e / view
379.3 KB
Page Weight
90%
Cleaner Than
New Visitor
54 mg
vs
Returning (cached)
27 mg
Annual (10K/mo)
5.6 kg
Emission Segments
Data Center
11 mg
Network
11 mg
Device
25 mg
Resource Breakdown
JavaScript
29.6 KB
Images
271.2 KB
HTML
78.5 KB
Green Hosting Not Verified
Server Hosting Service
4 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

21%Critical
Interactive

HTTPS

No WAF

201d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

18.11.2025

Valid Until

19.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.gijutu.co.jpgijutu.co.jp

SHA-256 Fingerprint

60:B5:02:E7:AB:71:E7:60:32:15:0A:F7:2E:40:78:3D:32:CD:64:FD...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
connection
Keep-Alive
content-length
80111
content-type
text/html
date
Mon, 01 Jun 2026 00:44:08 GMT
etag
"5023a848-138ef-652ead87508ed"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

gijutu.co.jp

Domain Information

gijutu.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.
F
28/100
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...
Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG AAA
81/100
Readability
/30
24/30

16px · LH --

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
24/25

8.59:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Times New Roman

Serif32px

Body Font

Times New Roman

Serif16px

Contrast Ratio

8.59:1

WCAG AAA (≥7:1)

Reading Comfort

~54 CPL

Optimal (45–75)
32px
h1
16px
p

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

✅ Optimal line length: ~54 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.6:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Buy on MyFontsFlesch 49

Color Palette

6 unique colors
Light
#ffffff
Background· 62.599999999999994%
#e6f0fc
Primary· 20.599999999999998%
#2c5685
Secondary· 6.8%
#95adbe
Secondary· 3.8%
#58716f
Secondary· 3.6%

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Scripts & Styles

1 Resources

1
Scripts
0
Styles
0
Async
0
Defer

Top Script Sources

mm_menu.js(1)

Website Identity

gijutu.co.jp

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 01 Jun 2026 at 00:44

Historical Analysis & Change Tracking

gijutu.co.jp Technology Stack - Built With Apache | StackOptic | StackOptic