vtol.org

https://vtol.org· First analyzed 09 May 2026· Updated 09 May 2026

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vtol.org

Mobile

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Hosting Provider

Pilo IP BV

IP Address

62.3.51.180

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 St Louis, United States

ASN

AS7393

Organization

Pilo IP BV

Server

Microsoft IIS

Nameservers

ns2.hostek.com.ns1.hostek.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.8 s10%

Speed Index

2.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7.3 MB

55 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Pilo IP BV

Technology Stack

12 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

Fonts

Email Marketing

Web Servers

SEO Analysis

D57/100

Meta Tags8/15

Content12/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

vtol.orgvtol.org

VFS - Welcome!

Founded in 1943 as the American Helicopter Society (AHS), the Vertical Flight Society is the world's oldest and largest technical society dedicated to advanc...

Description truncated.

Title Length14 chars

Recommended: 50-60 chars (~88px / 580px)

Description Length188 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

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Crawlability

Sitemap

robots.txt

6 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.

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AI & LLM Readiness

D42/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

Citation

11/25

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:20%

Words:1,567

Token eff.:Optimal

Sections/1K:10.2

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary24w

Descriptive Headingsavg 7.2w

Canonical URL

Open Graph0/3

Twitter Card0/3

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.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

11/20

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

Forms & Inputs

13/15

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

13/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

8/15

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.

16/100

928 mg

CO₂e / view

7.3 MB

Page Weight

Cleaner Than

New Visitor

1.06 g

Returning (cached)

531 mg

Annual (10K/mo)

111.4 kg

Emission Segments

Data Center

207 mg

Network

223 mg

Device

498 mg

Resource Breakdown

JavaScript

208.4 KB

Images

5.8 MB

CSS

1.3 MB

Fonts

3.2 KB

HTML

13.6 KB

Green Hosting Not Verified

Pilo IP BV

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

65%Fair

Critical / Transactional

HTTPS

No WAF

30d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

10.03.2026

Valid Until

08.06.2026

Subject Alternative Names (1)

vtol.org

SHA-256 Fingerprint

30:F9:E7:C6:F1:EE:B5:A7:99:E3:4A:14:7F:40:4E:F5:DA:9F:07:F5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src 'self'; object-src 'none'; form-action 'self' ht...

content-type

text/html;charset=UTF-8

date

Sat, 09 May 2026 19:57:28 GMT

expires

Tue, 01 Jan 1985 00:00:01 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

vtol-org.mail.protection.outlook.com

Domain Information

vtol.org

Domain Age

29y 6m

Created

07.11.1996

Expires

06.11.2027

Last Updated

14.09.2022

Registrar

Network Solutions, 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.

62/100

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...

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Typography & Readability

Helvetica

WCAG Partial

55/100

Readability

/30

13/30

14px · LH 1.86

Hierarchy

/20

7/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

Helvetica

Sans

Body Font

Helvetica

Sans14px

Contrast Ratio

1:1

34 issues

Reading Comfort

~42 CPL

Narrow lines

33px

25px

19px

14px

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

⚠️ Wide line spacing (1.86). 1.4–1.6 is optimal for body text.

❌ Very complex text: Flesch score 28/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 34 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle Fonts Buy on MyFontsFlesch 29

Color Palette

9 unique colors

15.45:1 AAA Light

#ffffff

Background· 21.900000000000002%

#202620

Secondary· 3.9%

#3c4f2c

Primary· 21%

#4b5e3b

Secondary· 14.600000000000001%

#69725e

Secondary· 5.1%

Business & Marketing Stack

2 Tools Detected

Advanced

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(12)googletagmanager.com(1)

Website Identity

vtol.org

29 years old

Location detected: 🇺🇸 United Statesvia ip

Network Solutions, LLC📧 Microsoft 365en

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 09 May 2026 at 19:58

Historical Analysis & Change Tracking