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nderf.org

https://nderf.org· First analyzed 13 May 2026· Updated 13 May 2026
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nderf.org
Desktop screenshot of nderf.org
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Mobile

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Hosting Provider

HostGator
hostgator.com

IP Address

192.185.117.193

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS31898

Organization

HostGator.com LLC

Server

Apache

Nameservers

ns418.websitewelcome.com.ns417.websitewelcome.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
623 ms10%
Speed Index
810 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
22.2 MB
21 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
HostGator

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv3.7.1

Analytics

1
Google Analytics

Web Servers

1
Apache

SEO Analysis

C69/100
20
4
1
Meta Tags9/15
Content12/12
Headings8/8
Technical14/21
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
N
nderf.orgnderf.org

Near-Death Experience Research Foundation (NDERF) | Real NDE Storie...

The Near-Death Experience Research Foundation (NDERF) documents and studies near-death and consciousness experiences from around the world.

Title truncated.
Title Length79 chars

Recommended: 50-60 chars (~478px / 580px)

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (79 chars, ~478px). Will be truncated in search results.

5 issues found

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Local SEO

Local Search Readiness

13/100
Poor
4 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

D49/100
Bot Access
20/25
Machine Read.
14/25
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
nav
Text ratio:22%
Words:2,136
Token eff.:Optimal
Sections/1K:5.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary19w
Descriptive Headingsavg 3.5w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
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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.
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
18/20
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.
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.
15/100
F
2.82 g
CO₂e / view
22.2 MB
Page Weight
5%
Cleaner Than
New Visitor
3.22 g
vs
Returning (cached)
1.61 g
Annual (10K/mo)
338.0 kg
Emission Segments
Data Center
629 mg
Network
676 mg
Device
1.51 g
Resource Breakdown
JavaScript
30.8 KB
Images
21.9 MB
CSS
257.8 KB
HTML
12.7 KB
Other
20.0 KB
Green Hosting Not Verified
HostGator
8 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

39d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

24.03.2026

Valid Until

22.06.2026

Subject Alternative Names (20)

*.nderf.orgnderf.orgwww.chinese.nderf.orgwww.chinesesimple.nderf.orgwww.croatian.nderf.orgwww.czech.nderf.orgwww.danish.nderf.orgwww.esperanto.nderf.org+12 more

SHA-256 Fingerprint

F1:1F:08:5B:D3:FA:AA:A0:61:DB:97:4A:B6:D1:5A:11:69:42:EC:4A...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Wed, 13 May 2026 08:07:58 GMT
last-modified
Thu, 30 Apr 2026 19:08:16 GMT
server
Apache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

nderf.org

Domain Information

nderf.org

Domain Age
27y 8m

Created

31.08.1998

Expires

30.08.2026

Last Updated

04.08.2024

Registrar

eNom, LLC

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.
C
69/100
Mobile Friendly6 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
3 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Inter

WCAG Partial
74/100
Readability
/30
26/30

20px · LH 1.50

Hierarchy
/20
16/20

2x ratio · ✓ H1→H6

WCAG
/25
16/25

1:1 min contrast

Performance
/25
16/25

1 font

Heading Font

Inter

Sans40px

Body Font

Inter

Sans20px

Contrast Ratio

1:1

8 issues

Reading Comfort

~39 CPL

Narrow lines
40px
h1
32px
h2
28px
h3
24px
h4
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 35/100. 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 2.0x larger than body text.

Buy on MyFontsFlesch 35

Color Palette

10 unique colors
Light
#c7ccce
Other· 9.2%
#e6fefe
Background· 24.099999999999998%
#4897d0
Primary· 17.5%
#adb8c0
Secondary· 11.7%
#422b3d
Secondary· 10.5%
#7f9db5
Secondary· 8.6%
#9d747f
Secondary· 6.7%
#556d8f
Secondary· 5.9%

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

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Scripts & Styles

8 Resources

6
Scripts
2
Styles
1
Async
0
Defer

Top Script Sources

local(2)ssl.google-analytics.com(1)cdn.jsdelivr.net(1)code.jquery.com(1)unpkg.com(1)

Website Identity

nderf.org

27 years old
Location detected: 🇺🇸 United Statesvia ip
eNom, LLCen

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Last analyzed: 13 May 2026 at 08:08

Historical Analysis & Change Tracking