clarkefoundation.org

https://clarkefoundation.org· First analyzed 28 May 2026· Updated 28 May 2026

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Mobile

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Hosting Provider

GoDaddy

godaddy.com

IP Address

192.169.170.16

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Tempe, United States

ASN

AS398101

Organization

GoDaddy.com, LLC

Server

Apache

Nameservers

ns58.domaincontrol.com.ns57.domaincontrol.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

648 ms10%

Speed Index

842 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7.3 MB

51 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.1.10

cms

Diviv4.27.6Custom

by Elegant Themes

View Theme

Technology Stack

17 Technologies Detected

Plugins

Other

CSS Frameworks

Analytics

Libraries

Fonts

Web Servers

Languages

SEO Analysis

B74/100

Meta Tags9/15

Content10/12

Headings8/8

Technical24/25

E-E-A-T0/7

Images3/7

Links2/5

URL5/5

Social3/5

Freshness4/4

Mobile3/4

Indexability3/3

clarkefoundation.orgclarkefoundation.org

The Arthur C Clarke Foundation - The Arthur C Clarke Foundation

No description available for this page.

Title Length63 chars

Recommended: 50-60 chars (~381px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (40/42) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

5 11 1

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

D44/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

4/25

Citation

13/25

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:3%

Words:861

Token eff.:Optimal

Structured Data

3 JSON-LD

WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary38w

Descriptive Headingsavg 4.8w

Canonical URL

Open Graph1/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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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.

77/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

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

4/15

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.

27/100

924 mg

CO₂e / view

7.3 MB

Page Weight

Cleaner Than

New Visitor

1.06 g

Returning (cached)

528 mg

Annual (10K/mo)

110.8 kg

Emission Segments

Data Center

206 mg

Network

222 mg

Device

496 mg

Resource Breakdown

JavaScript

224.9 KB

Images

6.9 MB

CSS

147.8 KB

Fonts

5.8 KB

HTML

34.1 KB

Green Hosting Not Verified

GoDaddy

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

02.05.2026

Valid Until

31.07.2026

Subject Alternative Names (2)

clarkefoundation.orgwww.clarkefoundation.org

SHA-256 Fingerprint

93:C9:CE:13:1F:83:29:50:09:E4:A9:BE:73:F6:13:85:65:09:73:86...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, must-revalidate, max-age=0)

content-encoding

📦 Gzip(gzip)

content-length

34663

content-type

text/html; charset=UTF-8

date

Thu, 28 May 2026 23:48:32 GMT

expires

Wed, 11 Jan 1984 05:00:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

clarkefoundation.org

Domain Age

22y 5m

Created

11.12.2003

Expires

11.12.2026

Last Updated

25.01.2026

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

56/100

Not Mobile Friendly53 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica + Arial

WCAG Partial

62/100

Readability

/30

20/30

16px · LH 1.70

Hierarchy

/20

14/20

2.25x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

12/25

System fonts

Heading Font

Helvetica

Sans36px

Body Font

Arial

Sans16px

Contrast Ratio

1:1

2 issues

Reading Comfort

~37 CPL

Narrow lines

36px

42px

26px

22px

16px

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

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

⚠️ Partial contrast: 2 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.

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

GGoogle Fonts Buy on MyFontsFlesch 42

Color Palette

9 unique colors

4.02:1 AA Large Light

#ffffff

Background· 62.1%

#7b7f87

Other· 4%

#0b0909

Primary· 18.7%

#bdae9d

Secondary· 3.3%

#7f3078

Secondary· 3.1%

#e3f2f0

Secondary· 2.1%

#69a0ba

Secondary· 1.9%

#181d28

Secondary· 1.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

clarkefoundation.org(17)googletagmanager.com(2)google-analytics.com(1)

Website Identity

The Arthur C Clarke Foundation - The Arthur C Clarke Foundation

Unleashing imagination to shape the future

clarkefoundation.list@gmail.com

clarkefoundation.org/

22 years old

Location detected: 🇺🇸 United Statesvia ip

GoDaddy.com, LLCen

Social Profiles

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 28 May 2026 at 23:48

Historical Analysis & Change Tracking