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shonenjump.com

https://shonenjump.com· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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shonenjump.com
Desktop screenshot of shonenjump.com
Mobile screenshot of shonenjump.com
Mobile

Sponsored

Hosting Provider

Impress Holdings, Inc.

IP Address

202.218.223.232

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 tabashi City, Japan

ASN

AS4694

Organization

Impress Holdings, Inc.

Server

Apache

Nameservers

ns-816.awsdns-38.net.ns-1230.awsdns-25.org.ns-1592.awsdns-07.co.uk.ns-509.awsdns-63.com.

Performance

93

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%
83 KB
54 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Impress Holdings, Inc.

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

F34/100
11
7
2
Meta Tags8/15
Content0/12
Headings0/8
Technical13/25
E-E-A-T0/7
Images0/7
Links1/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
S
shonenjump.comshonenjump.com

To viz.com from shonenjump.com

To viz.com from shonenjump.com

Title Length30 chars

Recommended: 50-60 chars (~190px / 580px)

Description Length30 chars

Recommended: 120-160 chars

Issues (2)

  • • Very thin content (21 words). Search engines need substantial content for ranking.
  • • Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

16 rules

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.

Sponsored

AI & LLM Readiness

F25/100
Bot Access
20/25
Machine Read.
3/25
Schema Data
0/25
Citation
2/25

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:17
Token eff.:Too Short

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 (11)
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.
C
68/100
8
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
8/20
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •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.
42/100
A+
10 mg
CO₂e / view
83.5 KB
Page Weight
95%
Cleaner Than
New Visitor
12 mg
vs
Returning (cached)
6 mg
Annual (10K/mo)
1.2 kg
Emission Segments
Data Center
2 mg
Network
3 mg
Device
6 mg
Resource Breakdown
JavaScript
45.4 KB
Images
15.4 KB
HTML
19.7 KB
Other
3.0 KB
Green Hosting Not Verified
Impress Holdings, Inc.
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Static / Informational

HTTPS

No WAF

291d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

15.01.2026

Valid Until

13.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

viz.comvytalfestival.comvizmedia.com*.rwbystatue.com*.haikasoru.comtuxedogin.comsigikki.comtuxedo-gin.com+12 more

SHA-256 Fingerprint

61:F5:42:8D:D5:5E:3D:07:F1:0D:60:AE:0C:AF:28:78:39:AE:84:68...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-type
text/html
date
Tue, 28 Apr 2026 03:49:50 GMT
server
Apache
x-frame-options
SAMEORIGIN
Good Warning Issue

Email Infrastructure

Google Workspace

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com
aspmx2.googlemail.com
aspmx3.googlemail.com
aspmx.l.google.com

+1 more

Domain Information

shonenjump.com

Domain Age
23y 10m

Created

18.06.2002

Expires

02.03.2027

Last Updated

28.02.2025

Registrar

Japan Registry Services Co., Ltd.

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
51/100
Mobile Friendly1 breakpoint
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,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Avenir

WCAG AA
59/100
Readability
/30
16/30

28px · LH 1.15

Hierarchy
/20
8/20

0.57x ratio

WCAG
/25
19/25

6.7:1 min contrast

Performance
/25
16/25

2 fonts

Heading Font

Avenir

Sans16px

Body Font

Avenir

Sans28px

Contrast Ratio

6.7:1

WCAG AA (≥4.5:1)

Reading Comfort

~39 CPL

Narrow lines
16px
h1
16px
h2
56px
h3
39px
h4
28px
p
Major Sixth
Scale

✅ Excellent readability: 28px body text is ideal for all devices.

⚠️ Tight line spacing (1.15). Increase to 1.4–1.6 for better readability.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.7:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

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

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFonts

Color Palette

9 unique colors
Light
#f2f2f2
Background· 52.900000000000006%
#3b302c
Secondary· 9.1%
#ff0000
Primary· 0%
#770907
Accent· 3.4%
#b08646
Secondary· 2.5%
#fefb14
Accent· 2.2%
#f3e80a
Accent· 2%
#f6cccd
Accent· 0.2%

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

6 Resources

4
Scripts
2
Styles
4
Async
0
Defer

Top Script Sources

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

Website Identity

shonenjump.com

23 years old
Location detected: 🇯🇵 Japanvia ip
Japan Registry Services Co., Ltd.📧 Google Workspaceja

Sponsored

Last analyzed: 28 Apr 2026 at 03:50

Historical Analysis & Change Tracking