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gu3.co.jp

https://gu3.co.jp· First analyzed 28 May 2026· Updated 28 May 2026
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gu3.co.jp
Desktop screenshot of gu3.co.jp
Mobile screenshot of gu3.co.jp
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.112.165.123

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

OpenResty

Nameservers

ns-113.awsdns-14.com.ns-1465.awsdns-55.org.ns-1829.awsdns-36.co.uk.ns-691.awsdns-22.net.

Performance

76

Core Web Vitals

Weight

First Contentful Paint
3.0 s10%
Speed Index
3.9 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
13.8 MB
62 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Web Servers

1
OpenResty

SEO Analysis

D54/100
16
6
1
Meta Tags9/15
Content8/12
Headings0/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
G
gu3.co.jpgu3.co.jp

株式会社gumi

株式会社gumiの公式サイトです。企業情報、事業内容、IR情報等をご覧いただけます。当社は、"Wow the World!"を企業理念とし、モバイルゲームの開発・運用に加え、ブロックチェーンやXR（VR等）の領域で投資やコンテンツ開発等を行っています。

Title Length8 chars

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

Description Length126 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

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.

Sponsored

AI & LLM Readiness

F36/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
9/25

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
header/footer
Text ratio:3%
Words:63
Token eff.:Too Short
Sections/1K:40
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
82/100
12
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
11/15
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.
1 recommendation
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
30/100
F
1.42 g
CO₂e / view
13.8 MB
Page Weight
5%
Cleaner Than
New Visitor
1.63 g
vs
Returning (cached)
814 mg
Annual (10K/mo)
170.8 kg
Emission Segments
Data Center
70 mg
Network
418 mg
Device
936 mg
Resource Breakdown
JavaScript
500.2 KB
Images
10.0 MB
CSS
3.2 MB
HTML
5.3 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.05.2025

Valid Until

27.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.gu3.co.jpgu3.co.jp

SHA-256 Fingerprint

53:29:41:62:22:B9:8F:FF:4F:04:0C:A4:D0:B9:7E:03:95:90:ED:39...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Thu, 28 May 2026 22:53:15 GMT
etag
W/"d396b1ced0af624e23ddc20a93130dfd"
last-modified
Thu, 28 May 2026 22:00:20 GMT
server
openresty
Good Warning Issue

Email Infrastructure

Google Workspace

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

aspmx2.googlemail.com
aspmx3.googlemail.com
aspmx4.googlemail.com
aspmx5.googlemail.com

+3 more

Domain Information

gu3.co.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
D
54/100
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.
Viewport
width=device-width
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

num

WCAG Partial
57/100
Readability
/30
22/30

16px · LH 1.63

Hierarchy
/20
12/20

1.12x ratio · ✓ H1→H6

WCAG
/25
10/25

1:1 min contrast

Performance
/25
13/25

1 font · 5 req

Heading Font

num

Sans18px

Body Font

num

Sans16px

Contrast Ratio

1:1

29 issues

Reading Comfort

~32 CPL

Narrow lines
18px
h1
28px
h2
20px
h3
16px
p
Major Second
Scale

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

⚠️ Partial contrast: 29 elements below WCAG AA threshold (min 1.0:1).

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

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFonts

Color Palette

10 unique colors
Light
#ffffff
Background· 25.7%
#ebcacb
Primary· 24.2%
#f6f2ea
Secondary· 9.3%
#f4dfd7
Accent· 7.7%
#cb2834
Accent· 7.5%
#e17a87
Accent· 7%
#241618
Secondary· 5.8%
#c9b7b6
Secondary· 4.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

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
3
Async
0
Defer

Top Script Sources

local(3)googletagmanager.com(2)google-analytics.com(1)

Website Identity

gu3.co.jp

Location detected: 🇯🇵 Japanvia tld
📧 Google Workspaceja

Social Profiles

FacebookX (Twitter)

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Last analyzed: 28 May 2026 at 22:53

Historical Analysis & Change Tracking