onassis.org

https://onassis.org· First analyzed 29 Apr 2026· Updated 29 Apr 2026

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onassis.org

Mobile

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.85.48

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 New York, United States

ASN

AS19551

Organization

Incapsula Inc

CDN

Nameservers

ns3-08.azure-dns.org.ns4-08.azure-dns.info.ns1-08.azure-dns.com.ns2-08.azure-dns.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

575 ms10%

Speed Index

748 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

713 KB

147 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Incapsula Inc

CDN

Technology Stack

7 Technologies Detected

Analytics

CSS Frameworks

Fonts

Tag Managers

Advertising

SEO Analysis

C65/100

Meta Tags11/15

Content9/12

Headings8/8

Technical13/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness2/4

Mobile4/4

Indexability3/3

onassis.orgonassis.org

Onassis Foundation | Onassis Foundation

We create the conditions, explore the ideas and trigger bold discussions that shape and shake society

Title Length39 chars

Recommended: 50-60 chars (~236px / 580px)

Description Length101 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (205/245) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: standard

6,959 URLs

robots.txt

Local SEO

Local Search Readiness

17/100

Poor

6 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

D47/100

Bot Access

20/25

Machine Read.

12/25

Schema Data

0/25

Citation

15/25

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:4%

Words:2,240

Token eff.:Optimal

Sections/1K:35.7

Structured Data

No Schema

Citation Readiness

Opening Summary30w

Descriptive Headingsavg 7.3w

Canonical URL

Open Graph3/3

Twitter Card2/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (7)

AI readiness recommendation preview...

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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.

70/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•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.

43/100

88 mg

CO₂e / view

712.7 KB

Page Weight

80%

Cleaner Than

New Visitor

101 mg

Returning (cached)

50 mg

Annual (10K/mo)

10.6 kg

Emission Segments

Data Center

20 mg

Network

21 mg

Device

47 mg

Resource Breakdown

JavaScript

482.4 KB

Images

643 B

CSS

63.8 KB

Fonts

105.9 KB

HTML

60.0 KB

Green Hosting Not Verified

Incapsula Inc

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

WAF

258d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.01.2026

Valid Until

12.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (11)

onassis.orgdev-admin.onassis.orgdev.onassis.orgadmin.onassis.orgwww.onassis.orgonassistimeline.onassis.orgcavafymap.onassis.orgcavafytimeline.onassis.org+3 more

SHA-256 Fingerprint

8E:4B:25:4F:9F:DF:9F:38:C6:FD:BC:0D:A9:B1:12:43:6A:67:06:8A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

1889

cache-control

🟡 900s(max-age=900, public, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

61106

content-type

text/html; charset=utf-8

date

Wed, 29 Apr 2026 18:49:16 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

onassis-org.mail.protection.outlook.com

Domain Information

onassis.org

Domain Age

23y 11m

Created

20.05.2002

Expires

20.05.2029

Last Updated

26.01.2021

Registrar

NetEarth One Inc. d/b/a NetEarth

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

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.

74/100

Mobile Friendly2 breakpoints

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...

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Typography & Readability

Helvetica Neue World W82_55 Rm

WCAG Partial

57/100

Readability

/30

13/30

14px · LH 1.79

Hierarchy

/20

12/20

1.43x ratio · ✓ H1→H6

WCAG

/25

17/25

1:1 min contrast

Performance

/25

15/25

1 font · 2 req

Heading Font

Helvetica Neue World W82_55 Rm

Sans20px

Body Font

Helvetica Neue World W82_55 Rm

Sans14px

Contrast Ratio

1:1

18 issues

Reading Comfort

~39 CPL

Narrow lines

20px

30px

60px

14px

Major Sixth

Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 6/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 18 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.

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

Buy on MyFontsFlesch 6

Color Palette

6 unique colors

Dark

#0c0c0c

Background· 86.4%

#fef501

Primary· 6.800000000000001%

#0042ff

Primary· 0%

#8a8542

Secondary· 2%

#d3ca20

Accent· 1.8%

#3f4e6f

Secondary· 1.8%

#262d44

Secondary· 1.1%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

TikTok PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)analytics.tiktok.com(3)local(3)connect.facebook.net(2)

Website Identity

onassis.org

23 years old

Location detected: 🇺🇸 United Statesvia ip

NetEarth One Inc. d/b/a NetEarth📧 Microsoft 365en

Social Profiles

Facebook X (Twitter)Instagram LinkedIn TikTok

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Last analyzed: 29 Apr 2026 at 18:49

Historical Analysis & Change Tracking