StackOptic
Back to Search
twanight.org favicon

twanight.org

https://twanight.org· First analyzed 15 May 2026· Updated 15 May 2026
Export
twanight.org
Desktop screenshot of twanight.org
Mobile screenshot of twanight.org
Mobile

Sponsored

Hosting Provider

Host Europe GmbH

IP Address

92.205.61.76

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Strasbourg, France

ASN

AS21499

Organization

Host Europe GmbH

Server

Nginx

Nameservers

ns65.domaincontrol.com.ns66.domaincontrol.com.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.4 MB
32 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
WordPressv6.1.10
Infrastructure
Hosting
Host Europe GmbH

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Other

1
Highcharts

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Web Servers

1
Nginxv1.18.0

Customer Support

1
Zendesk

SEO Analysis

D53/100
14
9
2
Meta Tags7/15
Content8/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images1/7
Links2/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
T
twanight.orgtwanight.org

TWAN

The World At Night (TWAN) is an international effort to present stunning nightscape photos and timelapse videos of the world’s landmarks against celestial at...

Description truncated.
Title Length4 chars

Recommended: 50-60 chars (~27px / 580px)

Description Length219 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (3/3) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

11 URLs

11 sub-sitemaps

robots.txt

Local SEO

Local Search Readiness

6/100
Poor
2 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

F39/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
9/25

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:2%
Words:425
Token eff.:Optimal
Sections/1K:2.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary33w
Descriptive Headingsavg 1.5w
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...
Upgrade to view recommendations

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.
C
66/100
10
Passed
5
Critical
3
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
7/15
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
5/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 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.
19/100
F
552 mg
CO₂e / view
4.4 MB
Page Weight
15%
Cleaner Than
New Visitor
631 mg
vs
Returning (cached)
315 mg
Annual (10K/mo)
66.2 kg
Emission Segments
Data Center
123 mg
Network
132 mg
Device
296 mg
Resource Breakdown
JavaScript
1.1 MB
Images
1.4 MB
CSS
1.8 MB
Fonts
2.2 KB
HTML
26.1 KB
Green Hosting Not Verified
Host Europe GmbH
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

54d

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

10.04.2026

Valid Until

09.07.2026

Subject Alternative Names (1)

twanight.org

SHA-256 Fingerprint

FA:88:D9:6A:5A:CF:1A:9A:7E:10:CB:9B:EE:87:D6:BB:95:76:9E:DC...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Fri, 15 May 2026 17:49:22 GMT
etag
"7445804a6aa67881fbf55a2bccb2d227"
last-modified
Fri, 15 May 2026 17:49:22 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

75

SPF
DKIM
DMARC

MX Records (1)

smtp.google.com

Domain Information

twanight.org

Domain Age
19 years

Created

22.04.2007

Expires

22.04.2027

Last Updated

23.04.2026

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
A
84/100
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, minimum-scale=1.0, shrink-to-fit=no
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
65/100
Readability
/30
26/30

19px · LH 1.50

Hierarchy
/20
5/20
WCAG
/25
13/25

3.89:1 min contrast

Performance
/25
21/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans19px

Contrast Ratio

3.89:1

4 issues

Reading Comfort

~45 CPL

Optimal (45–75)
32px
h2
19px
p

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

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

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 3.9:1).

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

GGoogle FontsFlesch 47

Color Palette

12 unique colors
7.85:1 AAA Dark
#262626
Other· 19%
#c3b8bb
Secondary· 5%
#ffffff
Primary· 0%
#57463c
Secondary· 14.9%
#010202
Secondary· 11.2%
#7c6760
Secondary· 7%
#4c3729
Secondary· 6.4%
#755a4b
Secondary· 6.4%

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

Sponsored

Scripts & Styles

19 Resources

13
Scripts
6
Styles
3
Async
2
Defer

Top Script Sources

twanight.org(7)code.highcharts.com(3)gstatic.com(1)googletagmanager.com(1)google.com(1)

Website Identity

twanight.org

info@twanight.org
19 years old
Location detected: 🇫🇷 Francevia ip
GoDaddy.com, LLC📧 Google Workspace

Sponsored

Last analyzed: 15 May 2026 at 17:49

Historical Analysis & Change Tracking