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manga-one.com

https://manga-one.com· First analyzed 22 May 2026· Updated 22 May 2026
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manga-one.com
Desktop screenshot of manga-one.com
Mobile screenshot of manga-one.com
Mobile

Sponsored

Hosting Provider

NTT PC Communications, Inc.

IP Address

202.229.192.106

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS2514

Nameservers

ns-1873.awsdns-42.co.uk.ns-59.awsdns-07.com.ns-682.awsdns-21.net.ns-1209.awsdns-23.org.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
828 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.4 MB
162 requests

Image Optimization

Lazy LoadWebPAVIF
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Styling
Tailwind CSS
Infrastructure
Hosting
NTT PC Communications, Inc.

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Twitter Ads

SEO Analysis

D59/100
18
6
0
Meta Tags8/15
Content5/12
Headings8/8
Technical11/21
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
M
manga-one.commanga-one.com

マンガワン

小学館の漫画が読める総合webコミックサイト 「モブサイコ」「ケンガンアシュラ」などマンガワンオリジナル作品を多数掲載。 まんが雑誌「サンデー」「スピリッツ」「スペリオール」「ちゃお」「flowers」などの連載作品等も読める！

Title Length5 chars

Recommended: 50-60 chars (~31px / 580px)

Description Length114 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    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

    F37/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    0/25
    Citation
    8/25

    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:1%
    Words:599
    Token eff.:Optimal

    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 (10)
    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
    69/100
    8
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    10/20
    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
    0/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 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.
    35/100
    E
    298 mg
    CO₂e / view
    2.4 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    341 mg
    vs
    Returning (cached)
    170 mg
    Annual (10K/mo)
    35.8 kg
    Emission Segments
    Data Center
    67 mg
    Network
    72 mg
    Device
    160 mg
    Resource Breakdown
    JavaScript
    512.4 KB
    Images
    723.6 KB
    CSS
    1.0 MB
    Fonts
    30.0 KB
    HTML
    15.5 KB
    Other
    100.5 KB
    Green Hosting Not Verified
    NTT PC Communications, Inc.
    7 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    81%Very Good
    Static / Informational

    HTTPS

    No WAF

    55d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    18.04.2026

    Valid Until

    17.07.2026

    Subject Alternative Names (2)

    *.manga-one.commanga-one.com

    SHA-256 Fingerprint

    C7:76:9E:FF:9D:E7:4E:7A:97:F7:4B:79:18:98:B8:88:8B:DE:3C:96...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    ⚪ Custom(s-maxage=31536000, stale-while-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Fri, 22 May 2026 16:42:32 GMT
    etag
    "3sbaqk30ds1m18"
    vary
    RSC, Next-Router-State-Tree, Next-Router-Prefetch, Accept-En...
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    25

    SPF
    DKIM
    DMARC

    Domain Information

    manga-one.com

    Domain Age
    11y 6m

    Created

    29.10.2014

    Expires

    29.10.2027

    Last Updated

    29.09.2025

    Registrar

    Japan Registry Services Co., Ltd.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked
    Data Protection Officer mentioned

    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.
    C
    62/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Jost

    WCAG Partial
    72/100
    Readability
    /30
    22/30

    16px · LH 1.40

    Hierarchy
    /20
    15/20

    1.12x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    1:1 min contrast

    Performance
    /25
    20/25

    1 font · 2 req

    Heading Font

    Jost

    Sans18px

    Body Font

    Jost

    Sans16px

    Contrast Ratio

    1:1

    11 issues

    Reading Comfort

    Single Font Family

    left aligned
    18px
    h1
    24px
    h2
    16px
    p
    Perfect Fourth
    Scale

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

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ✅ Easy to read: Flesch score 84/100 — accessible to general audiences.

    ⚠️ Partial contrast: 11 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.

    GGoogle FontsBuy on MyFontsFluid TypeFlesch 84

    Color Palette

    5 unique colors
    17.76:1 AAA Dark
    #181818
    Text· 62.2%
    #ffffff
    Text· 10.6%

    Business & Marketing Stack

    5 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Facebook PixelMid-Market
    Twitter/X AdsMid-Market

    Ad platforms and retargeting pixels

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    5

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    22 Resources

    18
    Scripts
    4
    Styles
    15
    Async
    0
    Defer

    Top Script Sources

    local(5)googletagmanager.com(4)connect.facebook.net(2)in.treasuredata.com(1)sync.im-apps.net(1)

    Website Identity

    manga-one.com

    11 years old
    Location detected: 🇯🇵 Japanvia ip
    Japan Registry Services Co., Ltd.ja

    Social Profiles

    X (Twitter)

    Sponsored

    Last analyzed: 22 May 2026 at 16:43

    Historical Analysis & Change Tracking