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altema.jp

https://altema.jp· First analyzed 19 May 2026· Updated 19 May 2026
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altema.jp
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Mobile screenshot of altema.jp
Mobile

Sponsored

Hosting Provider

Akamai Technologies

IP Address

23.50.131.138

Site Location

🇯🇵 Japanvia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS20940

Organization

Akamai Technologies

CDN

Akamai

WAF

Akamai

Nameservers

a7-64.akam.net.a5-66.akam.net.a1-164.akam.net.a12-65.akam.net.+2 more

Performance

86

Core Web Vitals

Weight

First Contentful Paint
1.8 s10%
Speed Index
2.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
983 KB
192 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Akamai Technologies
CDN
Akamai

Technology Stack

14 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

UI Components

2
Slick CarouselLightbox

CSS Frameworks

2
Tailwind CSS
Bootstrap

Advertising

2
Google AdsGoogle AdSense

Libraries

1
jQueryv2.1.3

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Other

1
Google Optimize

Customer Support

1
Zendesk

SEO Analysis

B78/100
24
5
0
Meta Tags7/15
Content10/12
Headings8/8
Technical22/25
E-E-A-T5/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
A
altema.jpaltema.jp

アルテマ｜国内最大級のゲーム攻略サイト - アルテマ

【国内最大級】ゲーム・スマホアプリの総合攻略サイト「アルテマ」です。人気ゲームから最新ゲームまで幅広く攻略情報を掲載。ゲームの最新情報や人気ランキングも最速で更新しているので、ご活用ください。

Title Length26 chars

Recommended: 50-60 chars (~161px / 580px)

Description Length96 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    153 URLs

    153 sub-sitemaps

    robots.txt

    22 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    7/100
    Poor
    2 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

    D51/100
    Bot Access
    19/25
    Machine Read.
    11/25
    Schema Data
    7/25
    Citation
    14/25

    AI Bot Access

    13/14 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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    def. lists
    Text ratio:3%
    Words:273
    Token eff.:Too Short
    Sections/1K:36.6
    Depth:1/5

    Structured Data

    1 JSON-LD
    Article×1.2Person×1.3(min)Organization×1.1(min)

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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.
    B
    79/100
    14
    Passed
    4
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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
    9/15
    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.
    66/100
    B
    99 mg
    CO₂e / view
    983.0 KB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    114 mg
    vs
    Returning (cached)
    57 mg
    Annual (10K/mo)
    11.9 kg
    Emission Segments
    Data Center
    5 mg
    Network
    29 mg
    Device
    65 mg
    Resource Breakdown
    JavaScript
    475.5 KB
    Images
    2.1 KB
    CSS
    430.0 KB
    HTML
    17.0 KB
    Other
    58.3 KB
    Green Hosting Verified
    Akamai Technologies
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    WAF

    184d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    18.11.2025

    Valid Until

    19.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.altema.jpaltema.jp

    SHA-256 Fingerprint

    D8:07:D5:2C:B6:94:E9:80:BB:8A:9F:F2:C7:BB:84:70:0C:3E:50:CB...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 6 Hours(max-age=22807, public)
    content-encoding
    📦 Gzip(gzip)
    content-length
    17125
    content-type
    text/html; charset=UTF-8
    date
    Tue, 19 May 2026 04:40:49 GMT
    expires
    Tue, 19 May 2026 11:00:55 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (1)

    altemamail.sakura.ne.jp

    Domain Information

    altema.jp

    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
    61/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Hiragino Kaku Gothic Pro

    WCAG Partial
    55/100
    Readability
    /30
    13/30

    12px · LH 1.50

    Hierarchy
    /20
    12/20

    1x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    13/25

    1 font · 1 req

    Heading Font

    Hiragino Kaku Gothic Pro

    Sans12px

    Body Font

    Hiragino Kaku Gothic Pro

    Sans12px

    Contrast Ratio

    1:1

    25 issues

    Reading Comfort

    ~79 CPL

    Wide lines
    12px
    h1
    26px
    h2
    12px
    p

    ❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

    ⚠️ Wide lines: ~79 chars/line. Use max-width: 65ch for comfortable reading.

    ⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 1.0:1).

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

    Buy on MyFontsFlesch 43

    Color Palette

    12 unique colors
    11.24:1 AAA Light
    #ffffff
    Background· 41.400000000000006%
    #3f393f
    Text· 6%
    #110809
    Primary· 8.6%
    #262034
    Secondary· 8.4%
    #9e8d81
    Secondary· 6.8%
    #47656a
    Secondary· 5.7%
    #835844
    Secondary· 5.6%
    #32201d
    Secondary· 5.3%

    Business & Marketing Stack

    6 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Google AdsEnterprise
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    Social Media

    2
    Twitter/X WidgetsFree
    Facebook SDKFree

    Social widgets and sharing tools

    3

    Categories

    6

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    17
    Async
    0
    Defer

    Top Script Sources

    googletagmanager.com(7)dmp.im-apps.net(3)connect.facebook.net(3)sync.im-apps.net(1)d.line-scdn.net(1)

    Website Identity

    altema.jp

    Location detected: 🇯🇵 Japanvia tld
    ja

    Sponsored

    Last analyzed: 19 May 2026 at 04:41

    Historical Analysis & Change Tracking