skepticalscience.com

https://skepticalscience.com· First analyzed 22 Apr 2026· Updated 22 Apr 2026

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Mobile

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Hosting Provider

Host Virtual, Inc

IP Address

192.73.240.141

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS36236

Organization

Host Virtual, Inc

Server

Apache

Nameservers

ns-1631.awsdns-11.co.uk.ns-919.awsdns-50.net.ns-1380.awsdns-44.org.ns-154.awsdns-19.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.9 s10%

Speed Index

2.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.2 MB

141 requests

Image Optimization

Lazy LoadResponsiveJetpack Photon (WordPress)

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

7 Technologies Detected

Libraries

Analytics

CSS Frameworks

Fonts

Web Servers

SEO Analysis

D59/100

Meta Tags13/15

Content11/12

Headings6/8

Technical8/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

skepticalscience.comskepticalscience.com

Global Warming and Climate Change skepticism examined

Examines the science and arguments of global warming skepticism. Common objections like 'global warming is caused by the sun', 'temperature has changed natur...

Description truncated.

Title Length53 chars

Recommended: 50-60 chars (~327px / 580px)

Description Length259 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (88/109) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

8 rules

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

F35/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

10/25

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

blockquotes

Text ratio:30%

Words:13,148

Token eff.:Excessive

Sections/1K:0.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 7.8w

Canonical URL

Open Graph1/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

42/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

6/20

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

Forms & Inputs

0/15

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

5/15

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

ARIA & Roles

11/15

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

4 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.

29/100

152 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

173 mg

Returning (cached)

87 mg

Annual (10K/mo)

18.2 kg

Emission Segments

Data Center

34 mg

Network

36 mg

Device

81 mg

Resource Breakdown

JavaScript

391.4 KB

Images

741.2 KB

CSS

41.6 KB

Fonts

591 B

HTML

48.0 KB

Other

1.9 KB

Green Hosting Not Verified

Host Virtual, Inc

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

50d

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

HTTP Protocol

HTTP/1.1

Valid From

14.03.2026

Valid Until

12.06.2026

Subject Alternative Names (1)

skepticalscience.com

SHA-256 Fingerprint

1E:33:8A:D1:1B:6D:BF:44:A4:71:6E:45:21:A8:28:0C:BA:20:0C:0B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

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

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

48805

content-type

text/html; charset=utf-8

date

Wed, 22 Apr 2026 18:18:07 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

tinkerbell.skepticalscience.com

Domain Information

skepticalscience.com

Domain Age

18y 10m

Created

25.06.2007

Expires

25.06.2027

Last Updated

25.11.2025

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

43/100

Not 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial

WCAG Partial

60/100

Readability

/30

19/30

14px · LH --

Hierarchy

/20

8/20

1.43x ratio · ✓ H1→H6

WCAG

/25

14/25

3.25:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Arial

Sans20px

Body Font

Arial

Sans14px

Contrast Ratio

3.25:1

3 issues

Reading Comfort

~73 CPL

Optimal (45–75)

20px

18px

16px

14px

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

✅ Optimal line length: ~72 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 3.2:1).

✅ 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.

GGoogle FontsFlesch 39

Color Palette

8 unique colors

3.55:1 AA Large Light

#ffffff

Background· 15.5%

#8f858d

Other· 7.4%

#e9eef1

Primary· 37.3%

#23689f

Accent· 11.7%

#adbec1

Secondary· 6.7%

#6d435d

Secondary· 6.3%

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

skepticalscience.com(13)googletagmanager.com(4)google-analytics.com(1)gstatic.com(1)google.com(1)

Website Identity