theinvisiblegorilla.com

https://theinvisiblegorilla.com· First analyzed 20 May 2026· Updated 20 May 2026

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Mobile

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Hosting Provider

GigeNET

IP Address

209.212.153.4

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Arlington Heights, United States

ASN

AS32181

Organization

GigeNET

Server

LiteSpeed

Nameservers

ns2.vervehosting.com.ns3.vervehosting.com.ns.vervehosting.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

436 ms10%

Speed Index

567 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.6 MB

10 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

GigeNET

Technology Stack

1 Technologies Detected

Web Servers

LiteSpeed

SEO Analysis

F39/100

Meta Tags9/15

Content4/12

Headings0/8

Technical5/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile4/4

Indexability3/3

theinvisiblegorilla.comtheinvisiblegorilla.com

The Invisible Gorilla

The Invisible Gorilla by Christopher Chabris and Daniel Simons examines the everyday cognitive illusions that affect how we understand ourselves and our world.

Title Length21 chars

Recommended: 50-60 chars (~117px / 580px)

Description Length159 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Local SEO

Local Search Readiness

0/100

Poor

15 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

F27/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

5/25

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:18%

Words:186

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary149w

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

53/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

3/20

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

1/15

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.

39/100

207 mg

CO₂e / view

1.6 MB

Page Weight

60%

Cleaner Than

New Visitor

236 mg

Returning (cached)

118 mg

Annual (10K/mo)

24.8 kg

Emission Segments

Data Center

46 mg

Network

50 mg

Device

111 mg

Resource Breakdown

Images

1.6 MB

CSS

1.1 KB

HTML

2.0 KB

Green Hosting Not Verified

GigeNET

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

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/2+H3

Valid From

11.04.2026

Valid Until

10.07.2026

Subject Alternative Names (4)

*.theinvisiblegorilla.cominvisiblegorilla.dansimons.comtheinvisiblegorilla.comwww.invisiblegorilla.dansimons.com

SHA-256 Fingerprint

65:3B:51:E6:01:AA:2B:74:B3:C9:26:2E:4D:88:BF:4F:AB:85:6B:05...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...

content-encoding

⚡ Brotli(br)

content-length

1732

content-type

text/html

date

Wed, 20 May 2026 23:23:53 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

theinvisiblegorilla.com

Domain Information

theinvisiblegorilla.com

Domain Age

18 years

Created

20.05.2008

Expires

20.05.2032

Last Updated

09.08.2024

Registrar

eNom, LLC

DNSSEC

Not Enabled

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.

37/100

Not Mobile Friendly

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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica

WCAG AA

63/100

Readability

/30

17/30

14px · LH --

Hierarchy

/20

10/20

WCAG

/25

22/25

5.69:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Helvetica

Body Font

Helvetica

Sans14px

Contrast Ratio

5.69:1

WCAG AA (≥4.5:1)

Reading Comfort

~78 CPL

Wide lines

14px

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

⚠️ Wide lines: ~78 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 45

Color Palette

8 unique colors

6.3:1 AA Light

#ffffff

Background· 76.6%

#5d5f6f

Secondary· 2.5%

#10a096

Primary· 8%

#b8c8c3

Secondary· 5.5%

#72a89e

Secondary· 3.2%

#e5daa2

Accent· 2.3%

#faf6ca

Accent· 1.3%

#549a8f

Secondary· 0.5%

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

theinvisiblegorilla.com

18 years old

Location detected: 🇺🇸 United Statesvia ip

eNom, LLC

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Last analyzed: 20 May 2026 at 23:24

Historical Analysis & Change Tracking