webastro.net

https://webastro.net· First analyzed 24 May 2026· Updated 24 May 2026

Export

webastro.net

$Desktop screenshot of webastro.net$

Mobile

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

51.210.154.29

Site Location

🇫🇷 Acheville, Francevia schema_nap

Server Location

🇫🇷 Strasbourg, France

ASN

AS16276

Organization

OVH

Server

Nginx

Nameservers

ns3181753.ip-51-210-154.eu.webastro.net.sdns2.ovh.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

929 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

52 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

OVHcloud

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Languages

SEO Analysis

C68/100

Meta Tags10/15

Content12/12

Headings3/8

Technical22/25

E-E-A-T2/7

Images1/7

Links2/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

webastro.netwebastro.net

Webastro: la communauté de l'astronomie

Axé sur un forum très actif, Webastro est un portail communautaire convivial destiné à tous ceux qui ont un jour levé les yeux vers les étoiles. De nombreux ...

Description truncated.

Title Length39 chars

Recommended: 50-60 chars (~242px / 580px)

Description Length245 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (12/13) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

378 URLs

378 sub-sitemaps

robots.txt

3 rules

Allows all crawlers

Local SEO

Local Search Readiness

22/100

Needs Work

6 14

Sponsored

AI & LLM Readiness

D45/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

5/25

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

navheader/footer

Text ratio:7%

Words:958

Token eff.:Optimal

Sections/1K:9.4

Depth:2/5

Structured Data

3 JSON-LD

Organization×1.1WebSite

Citation Readiness

Opening Summary31w

Descriptive Headingsavg 2w

Canonical URL

Open Graph2/3

Twitter Card1/3

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.

49/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

13/20

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

Forms & Inputs

5/15

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

6/15

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

4 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.

66/100

112 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

129 mg

Returning (cached)

64 mg

Annual (10K/mo)

13.5 kg

Emission Segments

Data Center

6 mg

Network

33 mg

Device

74 mg

Resource Breakdown

JavaScript

296.0 KB

Images

175.5 KB

CSS

549.8 KB

Fonts

76.6 KB

HTML

15.1 KB

Green Hosting Verified

OVHcloud

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

25%Critical

Critical / Transactional

HTTPS

No WAF

32d

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

27.03.2026

Valid Until

25.06.2026

Subject Alternative Names (2)

webastro.netwww.webastro.net

SHA-256 Fingerprint

19:4D:C5:0C:E3:E4:5E:D7:BA:A2:16:22:0A:F9:C0:B0:1C:8A:79:30...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache="Set-Cookie", max-age=900, public, s-maxage=900, st...)

content-encoding

📦 Gzip(gzip)

content-length

15169

content-security-policy

frame-ancestors 'self'

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

webastro.net

Domain Information

webastro.net

Domain Age

23y 1m

Created

18.04.2003

Expires

18.04.2027

Last Updated

19.04.2026

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.

72/100

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

ubuntu

WCAG Partial

53/100

Readability

/30

18/30

14px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

15/25

1.16:1 min contrast

Performance

/25

13/25

2 fonts · 2 req

Heading Font

ubuntu

Sans

Body Font

ubuntu

Sans14px

Contrast Ratio

1.16:1

23 issues

Reading Comfort

~35 CPL

Narrow lines

21px

20px

18px

14px

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

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

⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 1.2:1).

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

GGoogle Fonts Buy on MyFontsFluid TypeFlesch 41

Color Palette

11 unique colors

5.78:1 AA Dark

#000000

Primary· 11.8%

#838787

Other· 4.1%

#1c1719

Text· 19.2%

#263545

Secondary· 13.1%

#1c2833

Primary· 10.6%

#b8a99b

Secondary· 7.7%

#415467

Secondary· 6.7%

#6b5a56

Secondary· 6.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

webastro.net(9)googletagmanager.com(2)google-analytics.com(1)

Website Identity

Webastro

Organization

www.webastro.net/

23 years old

5 Rue du Maréchal Leclerc, Acheville

62320, Acheville, France

Location detected: 🇫🇷 France, Achevillevia schema_nap

Key-Systems GmbHen-US

Social Profiles

Facebook

Sponsored

Last analyzed: 24 May 2026 at 06:08

Historical Analysis & Change Tracking