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obspm.fr

https://obspm.fr· First analyzed 23 Apr 2026· Updated 23 Apr 2026
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obspm.fr
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Mobile

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Hosting Provider

Observatoire de Paris

IP Address

145.238.193.38

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Montreuil, France

ASN

AS2200

Organization

Observatoire de Paris

Server

Apache

Nameservers

ns1-p.obspm.fr.ns2-m.obspm.fr.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
670 ms10%
Speed Index
871 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
734 KB
22 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Observatoire de Paris

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

C69/100
21
5
1
Meta Tags9/15
Content12/12
Headings5/8
Technical15/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
O
obspm.frobspm.fr

Observatoire de Paris - PSL - Centre de recherche en astronomie et ...

Fondé en 1667, l’Observatoire de Paris est le plus grand pôle national de recherche en astronomie. Situés sur ses campus de Paris, Meudon et (…)

Title truncated.
Title Length80 chars

Recommended: 50-60 chars (~492px / 580px)

Description Length144 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (80 chars, ~492px). Will be truncated in search results.

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,063 URLs

robots.txt

16 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100
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

D41/100
Bot Access
20/25
Machine Read.
12/25
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
navheader/footer
Text ratio:11%
Words:1,007
Token eff.:Optimal
Sections/1K:5
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary24w
Descriptive Headingsavg 2w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
A
81/100
12
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
65/100
B
91 mg
CO₂e / view
734.1 KB
Page Weight
80%
Cleaner Than
New Visitor
104 mg
vs
Returning (cached)
52 mg
Annual (10K/mo)
10.9 kg
Emission Segments
Data Center
20 mg
Network
22 mg
Device
49 mg
Resource Breakdown
JavaScript
139.6 KB
Images
227.1 KB
CSS
354.6 KB
HTML
11.5 KB
Other
1.3 KB
Green Hosting Not Verified
Observatoire de Paris
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

51%Poor
Interactive

HTTPS

No WAF

204d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.11.2025

Valid Until

13.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.observatoiredeparis.psl.euobservatoiredeparis.psl.eu

SHA-256 Fingerprint

E8:76:52:BA:C9:65:F1:18:B3:68:99:AB:E3:FA:D1:C0:73:D9:5C:E7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 0s(max-age=0)
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
11492
content-type
text/html; charset=utf-8
date
Thu, 23 Apr 2026 00:57:25 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mx2.relay.renater.fr
mx1.relay.renater.fr

Domain Information

obspm.fr

Domain Age
31y 4m

Created

31.12.1994

Expires

31.12.2026

Last Updated

31.01.2026

Registrar

GIP RENATER

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected

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.
B
75/100
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, maximum-scale=5

Typography & Readability

Arago + Century Gothic Paneuropean

WCAG Partial
66/100
Readability
/30
20/30

19px · LH 1.33

Hierarchy
/20
16/20

2.5x ratio

WCAG
/25
12/25

3.64:1 min contrast

Performance
/25
18/25

2 fonts · 5 req

Heading Font

Arago

Sans48px

Body Font

Century Gothic Paneuropean

Sans19px

Contrast Ratio

3.64:1

31 issues

Reading Comfort

~34 CPL

Narrow lines
48px
h1
56px
h2
64px
h4
19px
p
Minor Second
Scale

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

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 15/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 31 elements below WCAG AA threshold (min 3.6:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 15

Color Palette

10 unique colors
14.58:1 AAA Light
#ffffff
Text· 13.6%
#292830
Secondary· 4.1%
#96134a
Primary· 0%
#1c0204
Accent· 31.6%
#21141f
Secondary· 15.1%
#9a6fbd
Secondary· 7.2%
#aa4221
Accent· 6.7%
#eda847
Accent· 6.5%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

5 Resources

3
Scripts
2
Styles
1
Async
0
Defer

Top Script Sources

local(2)analytics.obspm.fr(1)

Website Identity

obspm.fr

31 years old
Location detected: 🇫🇷 Francevia tld
GIP RENATERen

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Last analyzed: 23 Apr 2026 at 00:57

Historical Analysis & Change Tracking