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staruml.io

https://staruml.io· First analyzed 24 May 2026· Updated 24 May 2026
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staruml.io
Desktop screenshot of staruml.io
Mobile screenshot of staruml.io
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.183.209

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

mcgrory.ns.cloudflare.com.irma.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
708 ms10%
Speed Index
920 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.2 MB
73 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Astro
Styling
Tailwind CSS
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

CDN

1
Cloudflare

SEO Analysis

C64/100
18
7
0
Meta Tags5/15
Content11/12
Headings8/8
Technical17/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile1/4
Indexability3/3
S
staruml.iostaruml.io

StarUML

A sophisticated software modeler for agile and concise modeling

Title Length7 chars

Recommended: 50-60 chars (~46px / 580px)

Description Length63 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    robots.txt

    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

    D54/100
    Bot Access
    20/25
    Machine Read.
    20/25
    Schema Data
    0/25
    Citation
    14/25

    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
    nav
    Text ratio:11%
    Words:1,027
    Token eff.:Optimal
    Sections/1K:35.1
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary112w
    Descriptive Headingsavg 3w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    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
    78/100
    12
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    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.
    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.
    51/100
    D
    229 mg
    CO₂e / view
    2.2 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    262 mg
    vs
    Returning (cached)
    131 mg
    Annual (10K/mo)
    27.5 kg
    Emission Segments
    Data Center
    11 mg
    Network
    67 mg
    Device
    151 mg
    Resource Breakdown
    JavaScript
    353 B
    Images
    2.2 MB
    CSS
    12.4 KB
    Fonts
    1.4 KB
    HTML
    11.4 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    78%Good
    Static / Informational

    HTTPS

    WAF

    54d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    19.04.2026

    Valid Until

    18.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    staruml.io

    SHA-256 Fingerprint

    EB:F1:53:FB:F4:CA:F3:BB:3B:75:3F:AB:3E:2B:4F:E5:4B:69:38:53...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    cf-cache-status
    DYNAMIC
    cf-ray
    a00edff61bfe8f93-BOS
    content-encoding
    ⚡ Brotli(br)
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    20

    SPF
    DKIM
    DMARC

    MX Records (5)

    aspmx2.googlemail.com
    alt1.aspmx.l.google.com
    aspmx3.googlemail.com
    alt2.aspmx.l.google.com

    +1 more

    Domain Information

    staruml.io

    Domain Age
    12y 10m

    Created

    09.07.2013

    Expires

    09.07.2029

    Last Updated

    05.12.2025

    Registrar

    101domain GRS Limited

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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.
    B
    72/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Newsreader + Geist

    WCAG Partial
    76/100
    Readability
    /30
    23/30

    16px · LH 1.50

    Hierarchy
    /20
    16/20

    2.25x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    20/25

    2 fonts · 1 req

    Heading Font

    Newsreader

    Serif36px

    Body Font

    Geist

    Sans16px

    Contrast Ratio

    1:1

    8 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    36px
    h1
    30px
    h2
    24px
    h3
    16px
    p

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

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

    ⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 8 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 2.2x larger than body text.

    GGoogle FontsBuy on MyFontsFlesch 37

    Color Palette

    7 unique colors
    10.76:1 AAA Light
    #ffffff
    Primary· 70.99999999999999%
    #3b3e41
    Other· 6.3%
    #f4f2eb
    Secondary· 2.6%
    #3a6eae
    Secondary· 0.7%

    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
    1
    Async
    1
    Defer

    Top Script Sources

    googletagmanager.com(1)local(1)static.cloudflareinsights.com(1)

    Website Identity

    staruml.io

    12 years old
    Location detected: 🇨🇦 Canadavia ip
    101domain GRS Limited📧 Google Workspaceen

    Sponsored

    Last analyzed: 24 May 2026 at 19:58

    Historical Analysis & Change Tracking