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vassalengine.org

https://vassalengine.org· First analyzed 14 May 2026· Updated 14 May 2026
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vassalengine.org
Desktop screenshot of vassalengine.org
Mobile screenshot of vassalengine.org
Mobile

Sponsored

Hosting Provider

Akamai Technologies, Inc.

IP Address

172.237.96.19

Site Location

🇬🇧 United Kingdomvia ip

Server Location

🇬🇧 London, United Kingdom

ASN

AS63949

Organization

Akamai Technologies, Inc.

Server

Caddy

Nameservers

ns6.vassalengine.org.ns.vassalengine.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
521 ms10%
Speed Index
677 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.2 MB
34 requests

Image Optimization

WebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Akamai Technologies, Inc.

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Caddy

SEO Analysis

D55/100
16
8
0
Meta Tags8/15
Content6/12
Headings7/8
Technical13/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
V
vassalengine.orgvassalengine.org

Vassal

Vassal is an open-source game engine for building and playing online adaptations of board games and card games.

Title Length6 chars

Recommended: 50-60 chars (~35px / 580px)

Description Length111 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    3 rules

    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

    F33/100
    Bot Access
    20/25
    Machine Read.
    5/25
    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
    blockquotesheader/footer
    Text ratio:4%
    Words:140
    Token eff.:Too Short
    Sections/1K:28.6
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary35w
    Descriptive Headingsavg 2.2w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    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.
    B
    75/100
    9
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    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.
    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.
    48/100
    D
    227 mg
    CO₂e / view
    2.2 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    260 mg
    vs
    Returning (cached)
    130 mg
    Annual (10K/mo)
    27.3 kg
    Emission Segments
    Data Center
    11 mg
    Network
    67 mg
    Device
    149 mg
    Resource Breakdown
    JavaScript
    2.7 KB
    Images
    2.2 MB
    CSS
    1.2 KB
    HTML
    6.2 KB
    Green Hosting Verified
    Akamai Technologies, Inc.
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    81%Very Good
    Static / Informational

    HTTPS

    No WAF

    41d

    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+H3

    Valid From

    26.03.2026

    Valid Until

    24.06.2026

    Subject Alternative Names (1)

    vassalengine.org

    SHA-256 Fingerprint

    DB:35:0F:FB:C7:43:AE:FB:54:F7:1F:26:1A:95:76:34:6B:46:DD:36...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=2592000
    content-encoding
    zstd
    content-type
    text/html; charset=utf-8
    date
    Thu, 14 May 2026 14:54:19 GMT
    etag
    "di948lbcrqklhrf-zstd"
    last-modified
    Sun, 03 May 2026 14:36:39 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    two.vassalengine.org

    Domain Information

    vassalengine.org

    Domain Age
    23y 4m

    Created

    14.01.2003

    Expires

    14.01.2027

    Last Updated

    20.11.2025

    Registrar

    Gandi SAS

    DNSSEC
    Not Enabled

    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
    68/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Times New Roman

    WCAG Partial
    68/100
    Readability
    /30
    22/30

    16px · LH --

    Hierarchy
    /20
    14/20

    2x ratio

    WCAG
    /25
    18/25

    3.04:1 min contrast

    Performance
    /25
    14/25

    1 font

    Heading Font

    Times New Roman

    Serif32px

    Body Font

    Times New Roman

    Serif16px

    Contrast Ratio

    3.04:1

    2 issues

    Reading Comfort

    Single Font Family

    left aligned
    32px
    h1
    24px
    h2
    16px
    p

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

    ⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 3.0:1).

    ❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    ✅ Lean font stack: 1 font families keeps load times fast.

    ⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

    Buy on MyFonts

    Color Palette

    6 unique colors
    Light
    #ffffff
    Primary· 40%
    #eeebdf
    Secondary· 30.1%
    #d7d4cb
    Secondary· 12.8%
    #b1ce9a
    Secondary· 6.4%
    #a4b69d
    Secondary· 6.4%
    #788b68
    Secondary· 4.3%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    5 Resources

    3
    Scripts
    2
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    local(2)cdn.jsdelivr.net(1)

    Website Identity

    vassalengine.org

    23 years old
    Location detected: 🇬🇧 United Kingdomvia ip
    Gandi SASen

    Social Profiles

    GitHubDiscord

    Sponsored

    Last analyzed: 14 May 2026 at 14:54

    Historical Analysis & Change Tracking