theskepticsguide.org

https://theskepticsguide.org· First analyzed 08 May 2026· Updated 08 May 2026

Export

Mobile

Sponsored

Hosting Provider

WP Engine

wpengine.com

IP Address

141.193.213.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Austin, United States

ASN

AS209242

Organization

WPEngine, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

luke.ns.cloudflare.com.jule.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

8.6 MB

151 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Sgu Websitev1.0Custom

by Digital Gravity Media

Technology Stack

37 Technologies Detected

CSS Frameworks

Analytics

Libraries

UI Components

Slick Carousel Fancybox

Icon Libraries

Font Awesome Ionicons

Fonts

Google Fonts

CDN

Cloudflare

Customer Support

Zendesk

SEO Analysis

B78/100

Meta Tags7/15

Content11/12

Headings6/8

Technical23/25

E-E-A-T5/7

Images4/7

Links2/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

theskepticsguide.orgtheskepticsguide.org

The Skeptics Guide to the Universe

No description available for this page.

Title Length34 chars

Recommended: 50-60 chars (~207px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

2 rules

Local SEO

Local Search Readiness

22/100

Needs Work

6 11

Sponsored

AI & LLM Readiness

D54/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

6/25

Citation

14/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:2%

Words:577

Token eff.:Optimal

Sections/1K:31.2

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbList

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 3.8w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

13/20

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

Semantic Structure

15/20

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

11/15

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

ARIA & Roles

5/15

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

3 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.

35/100

890 mg

CO₂e / view

8.6 MB

Page Weight

Cleaner Than

New Visitor

1.02 g

Returning (cached)

509 mg

Annual (10K/mo)

106.8 kg

Emission Segments

Data Center

44 mg

Network

262 mg

Device

585 mg

Resource Breakdown

JavaScript

720.8 KB

Images

1.1 MB

CSS

6.7 MB

Fonts

2.3 KB

HTML

35.2 KB

Other

300 B

Green Hosting Verified

WP Engine

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

26%Critical

Interactive

HTTPS

WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.04.2026

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.theskepticsguide.org

SHA-256 Fingerprint

8A:56:36:9C:58:9C:11:0F:A1:9D:54:35:6D:8D:F8:80:F4:19:87:D4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟢 1 Month(max-age=15552000, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray

9f87c07c8ffe15e0-SJC

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com

aspmx3.googlemail.com

alt2.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

theskepticsguide.org

Domain Age

20y 1m

Created

05.04.2006

Expires

05.04.2030

Last Updated

03.05.2021

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

63/100

Mobile Friendly8 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, maximum-scale=1.0, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Questrial

WCAG Partial

70/100

Readability

/30

24/30

18px · LH 1.60

Hierarchy

/20

13/20

1.94x ratio · ✓ H1→H6

WCAG

/25

17/25

1:1 min contrast

Performance

/25

16/25

2 fonts · 10 req

Heading Font

Questrial

Sans35px

Body Font

Questrial

Sans18px

Contrast Ratio

1:1

12 issues

Reading Comfort

~34 CPL

Narrow lines

35px

40px

78px

40px

18px

Perfect Fourth

Scale

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 45/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle Fonts Buy on MyFontsFluid Type (rem)Flesch 45

Color Palette

10 unique colors

3.09:1 AA Large Dark

#302a2a

Other· 27.1%

#727773

Other· 7.5%

#675549

Secondary· 13.4%

#191f2b

Secondary· 13.2%

#fcf9eb

Primary· 6.3%

#c4b18c

Secondary· 6.2%

#aa8160

Secondary· 5.9%

#905e3f

Secondary· 5.3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

theskepticsguide.org(12)connect.facebook.net(3)google.com(2)gstatic.com(1)googletagmanager.com(1)

Website Identity

The Skeptics Guide to the Universe

Organization

Weekly science podcast produced by the SGU Productions llc. Also provides blogs, forums, videos and resources.

www.theskepticsguide.org/

20 years old

Location detected: 🇺🇸 United Statesvia ip

NameCheap, Inc.📧 Google Workspaceen-US

Social Profiles

Facebook X (Twitter)Instagram TikTok

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Last analyzed: 08 May 2026 at 10:24

Historical Analysis & Change Tracking