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ikaros.jp

https://ikaros.jp· First analyzed 29 May 2026· Updated 29 May 2026
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ikaros.jp
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Mobile

Sponsored

Hosting Provider

Impress Holdings, Inc.

IP Address

202.218.13.172

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Niiza, Japan

ASN

AS4694

Organization

Impress Holdings, Inc.

Server

Apache

Nameservers

ns-1873.awsdns-42.co.uk.ns-320.awsdns-40.com.ns-740.awsdns-28.net.ns-1366.awsdns-42.org.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
920 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
936 KB
29 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Impress Holdings, Inc.

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Microsoft Clarity

Advertising

2
Google AdsGoogle AdSense

Libraries

1
jQueryv1.8.0

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

D50/100
13
9
0
Meta Tags8/15
Content7/12
Headings8/8
Technical11/21
E-E-A-T0/7
Images2/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
I
ikaros.jpikaros.jp

イカロス出版

イカロス出版のホームページ。イカロス出版刊行の雑誌や書籍の紹介から、航空関連スクール、就職支援に関わるセミナーやメディアプロモーション支援事業等を展開しています。 あなたの趣味の知識欲を高め、また就職に役立つ情報を提供します！

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length113 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    robots.txt

    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.
    13/25
    Schema Data
    0/25
    Citation
    4/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:10%
    Words:65
    Token eff.:Too Short
    Sections/1K:30
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary11w
    Descriptive Headingsavg 1w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    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.
    A
    83/100
    12
    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
    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
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
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    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.
    38/100
    B
    116 mg
    CO₂e / view
    935.9 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    132 mg
    vs
    Returning (cached)
    66 mg
    Annual (10K/mo)
    13.9 kg
    Emission Segments
    Data Center
    26 mg
    Network
    28 mg
    Device
    62 mg
    Resource Breakdown
    JavaScript
    261.8 KB
    Images
    604.9 KB
    CSS
    42.4 KB
    HTML
    9.1 KB
    Other
    17.7 KB
    Green Hosting Not Verified
    Impress Holdings, Inc.
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    81d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    20.05.2026

    Valid Until

    18.08.2026

    Subject Alternative Names (2)

    *.ikaros.jpikaros.jp

    SHA-256 Fingerprint

    69:29:73:84:25:9A:5E:E6:96:D3:7F:2E:3D:D4:E6:66:17:E9:AB:ED...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    content-length
    9058
    content-type
    text/html
    date
    Fri, 29 May 2026 11:46:21 GMT
    etag
    "2362-649924bea5306"
    last-modified
    Fri, 30 Jan 2026 03:09:07 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (5)

    alt1.aspmx.l.google.com
    alt2.aspmx.l.google.com
    aspmx.l.google.com
    alt3.aspmx.l.google.com

    +1 more

    Domain Information

    ikaros.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.
    C
    60/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Josefin Sans + Arial

    WCAG Partial
    65/100
    Readability
    /30
    17/30

    16px · LH 2.00

    Hierarchy
    /20
    17/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    1:1 min contrast

    Performance
    /25
    13/25

    System fonts

    Heading Font

    Josefin Sans

    Sans48px

    Body Font

    Arial

    Sans16px

    Contrast Ratio

    1:1

    1 issue

    Reading Comfort

    ~40 CPL

    Narrow lines
    48px
    h1
    22px
    h2
    16px
    p

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

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

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

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

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Buy on MyFonts

    Color Palette

    10 unique colors
    Light
    #ffffff
    Background· 22.8%
    #021c55
    Primary· 20.200000000000003%
    #063167
    Accent· 11.4%
    #003995
    Accent· 10.6%
    #0061cf
    Accent· 10%
    #9cb7cb
    Secondary· 7.1%
    #1e589d
    Accent· 5.3%
    #2a98e7
    Accent· 5%

    Business & Marketing Stack

    4 Tools Detected

    Advanced

    Behavior Analytics

    3
    Google Tag ManagerFree
    Google AnalyticsFree
    Microsoft ClarityFree

    User behavior and product analytics

    Advertising

    1
    Google AdsEnterprise

    Ad platforms and retargeting pixels

    2

    Categories

    4

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    Google AdSense

    Sponsored

    Scripts & Styles

    11 Resources

    9
    Scripts
    2
    Styles
    4
    Async
    0
    Defer

    Top Script Sources

    pagead2.googlesyndication.com(2)googletagmanager.com(2)scripts.clarity.ms(1)clarity.ms(1)ajax.googleapis.com(1)

    Website Identity

    ikaros.jp

    Location detected: 🇯🇵 Japanvia tld
    📧 Google Workspaceja

    Sponsored

    Last analyzed: 29 May 2026 at 11:46

    Historical Analysis & Change Tracking