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k-1.co.jp

https://k-1.co.jp· First analyzed 19 May 2026· Updated 19 May 2026
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k-1.co.jp
Desktop screenshot of k-1.co.jp
Mobile screenshot of k-1.co.jp
Mobile

Sponsored

Hosting Provider

Directorz Co., Ltd.

IP Address

27.133.241.156

Site Location

🇯🇵 渋谷区, Japanvia schema_nap

Server Location

🇯🇵 Shibuya City, Japan

ASN

AS4713

Organization

Directorz Co., Ltd.

Server

Nginx

CDN

CDN

Nameservers

dns2.directorz.jp.dns1.directorz.jp.

Performance

92

Core Web Vitals

Weight

First Contentful Paint
1.3 s10%
Speed Index
1.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.2 MB
161 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Shopify
ecommerce
Shopify Theme
Shopify Theme

Detected Apps

Instagram ShoppingTikTok

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

7 Technologies Detected

Fonts

2
Adobe Fonts (Typekit)Adobe Fonts

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

B73/100
22
5
1
Meta Tags10/15
Content11/12
Headings8/8
Technical18/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile1/4
Indexability3/3
K
k-1.co.jpk-1.co.jp

K-1 OFFICIAL SITE | Martial Arts Event

This is the official website of K-1, which operates the martial arts events "K-1 WORLD GP", "Krush", "Krush-EX", "K-1 Amateur", "K-1 Koshien/College", and "K...

Description truncated.
Title Length38 chars

Recommended: 50-60 chars (~225px / 580px)

Description Length396 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (141/184) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

25/100
Needs Work
7 12 1

Sponsored

AI & LLM Readiness

D51/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
1/25
Citation
17/25

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
def. listsnav
Text ratio:4%
Words:2,796
Token eff.:Optimal
Sections/1K:2.1
Depth:2/5

Structured Data

1 JSON-LD
SearchAction

Citation Readiness

Opening Summary198w
Descriptive Headingsavg 12.8w
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

Sponsored

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
86/100
14
Passed
1
Critical
2
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
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.
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.
23/100
F
537 mg
CO₂e / view
4.2 MB
Page Weight
15%
Cleaner Than
New Visitor
614 mg
vs
Returning (cached)
307 mg
Annual (10K/mo)
64.4 kg
Emission Segments
Data Center
120 mg
Network
129 mg
Device
288 mg
Resource Breakdown
JavaScript
77.5 KB
Images
1.1 MB
CSS
3.0 MB
HTML
31.6 KB
Other
8.3 KB
Green Hosting Not Verified
Directorz Co., Ltd.
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

91d

Certificate Details

Type

Domain Validated (DV)

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

12.08.2025

Valid Until

18.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

k-1.co.jpwww.k-1.co.jp

SHA-256 Fingerprint

D6:77:BC:C9:55:F0:0C:35:AD:EE:E8:63:92:FB:14:4F:98:13:31:F8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟣 Private(private, must-revalidate)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Tue, 19 May 2026 12:56:03 GMT
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

dmail.kagoya.net

Domain Information

k-1.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
76/100
Mobile Friendly3 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

BIZ UDPGothic

WCAG AAA
81/100
Readability
/30
24/30

22px · LH 1.50

Hierarchy
/20
15/20

0.73x ratio · ✓ H1→H6

WCAG
/25
22/25

17.31:1 min contrast

Performance
/25
20/25

2 fonts · 2 req

Heading Font

BIZ UDPGothic

Sans16px

Body Font

BIZ UDPGothic

Sans22px

Contrast Ratio

17.31:1

WCAG AAA (≥7:1)

Reading Comfort

~62 CPL

Optimal (45–75)
16px
h1
60px
h2
32px
h3
22px
p

✅ Excellent readability: 22px body text is ideal for all devices.

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

✅ Optimal line length: ~62 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 17.3:1).

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

AAdobe FontsBuy on MyFontsFluid TypeFlesch 48

Color Palette

16 unique colors
15.93:1 AAA Light
#ffffff
Text· 10.6%
#232127
Text· 6.5%
#b07d2a
Accent· 9.2%
#bd9843
Secondary· 8.1%
#292d3b
Secondary· 7.8%
#6e542c
Secondary· 6.9%
#3c2f28
Secondary· 6.1%
#090419
Primary· 5.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

22 Resources

17
Scripts
5
Styles
11
Async
0
Defer

Top Script Sources

cse.google.com(4)googletagmanager.com(4)youtube.com(2)google-analytics.com(2)d.shutto-translation.com(2)

Website Identity

K-1公式サイト

Corporation
+81364505072
www.k-1.co.jp/

神宮前6-34-20 原宿リージェンシー1F, 渋谷区

150-0001, 渋谷区, 東京都

JP

Location detected: 🇯🇵 Japan, 渋谷区via schema_nap
en

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Last analyzed: 19 May 2026 at 12:56

Historical Analysis & Change Tracking