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iquilezles.org

https://iquilezles.org· First analyzed 08 May 2026· Updated 08 May 2026
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iquilezles.org
Desktop screenshot of iquilezles.org
Mobile screenshot of iquilezles.org
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.219.101.218

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Apache

Nameservers

ns-1808.awsdns-34.co.uk.ns-533.awsdns-02.net.ns-80.awsdns-10.com.ns-1240.awsdns-27.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
370 ms10%
Speed Index
481 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
33 KB
13 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

2 Technologies Detected

Payments

1
PayPal

Web Servers

1
Apache

SEO Analysis

D56/100
15
9
2
Meta Tags11/15
Content8/12
Headings1/8
Technical15/25
E-E-A-T3/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
I
iquilezles.orgiquilezles.org

Inigo Quilez :: computer graphics, maths, shaders, fractals, demoscene

Tutorials and articles of Inigo Quilez on computer graphics, fractals, math, art, demoscene, shaders and more.

Title Length70 chars

Recommended: 50-60 chars (~418px / 580px)

Description Length110 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (11/11) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

61 rules

Sitemap reference found

Local SEO

Local Search Readiness

5/100
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

F23/100
Bot Access
5/25
Machine Read.
8/25
Schema Data
0/25
Citation
10/25

AI Bot Access

1/14 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:23%
Words:345
Token eff.:Optimal
Sections/1K:11.6

Structured Data

No Schema

Citation Readiness

Opening Summary
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 (11)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
B
70/100
9
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
7/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
72/100
A+
3 mg
CO₂e / view
33.1 KB
Page Weight
95%
Cleaner Than
New Visitor
4 mg
vs
Returning (cached)
2 mg
Annual (10K/mo)
396 g
Emission Segments
Data Center
<0.001 g
Network
1 mg
Device
2 mg
Resource Breakdown
Images
28.2 KB
CSS
1.7 KB
HTML
3.3 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

No WAF

305d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

08.02.2026

Valid Until

09.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

iquilezles.orgwww.iquilezles.org

SHA-256 Fingerprint

A8:71:5E:E2:3B:5A:63:50:AC:BB:6F:4A:61:D3:2E:F5:83:7D:B3:5C...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-length
3045
content-type
text/html; charset=UTF-8
date
Fri, 08 May 2026 11:48:52 GMT
server
Apache
vary
Accept-Encoding
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

iquilezles.org

Domain Age
17y 5m

Created

03.12.2008

Expires

03.12.2030

Last Updated

15.02.2026

Registrar

Gandi SAS

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.
C
64/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

sans-serif

WCAG Fail
59/100
Readability
/30
22/30

18px · LH 1.80

Hierarchy
/20
8/20
WCAG
/25
15/25

1:1 min contrast

Performance
/25
14/25

0 fonts

Heading Font

sans-serif

Sans

Body Font

sans-serif

Sans18px

Contrast Ratio

1:1

25 issues

Reading Comfort

Single Font Family

left aligned
21px
h3

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

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

❌ Low contrast: 25 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

✅ Lean font stack: 0 font families keeps load times fast.

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

Flesch 48

Color Palette

5 unique colors
3.94:1 AA Large Dark
#282828
Primary· 62.8%
#838486
Other· 1.7%

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

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

iquilezles.org

iquilezles@hotmail.com
17 years old
Location detected: 🇺🇸 United Statesvia ip
Gandi SASen

Sponsored

Last analyzed: 08 May 2026 at 11:49

Historical Analysis & Change Tracking