StackOptic
Back to Search
impactco2.fr favicon

impactco2.fr

https://impactco2.fr· First analyzed 14 May 2026· Updated 14 May 2026
Export
impactco2.fr
Desktop screenshot of impactco2.fr
Mobile screenshot of impactco2.fr
Mobile

Sponsored

Hosting Provider

Outscale SASU

IP Address

148.253.96.193

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Saint-Cloud, France

ASN

AS50624

Organization

Outscale SASU

Nameservers

b.ns.developpement-durable.gouv.fr.nsa.perf1.fr.nsb.perf1.com.a.ns.developpement-durable.gouv.fr.+1 more

Performance

80

Core Web Vitals

Weight

First Contentful Paint
2.2 s10%
Speed Index
2.9 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
67 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
CMS
Notion
Infrastructure
Hosting
Outscale SASU
CDN
Vercel Image

Technology Stack

3 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

SEO Analysis

C65/100
19
8
1
Meta Tags9/15
Content10/12
Headings8/8
Technical14/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
I
impactco2.frimpactco2.fr

Accueil | Impact CO₂

Sensibiliser sa communauté grâce aux ressources ludiques et pédagogiques de l'ADEME sur l’impact carbone des gestes et objets du quotidien.

Title Length20 chars

Recommended: 50-60 chars (~120px / 580px)

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (14/14) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

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.

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
13/25

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:0%
Words:588
Token eff.:Optimal
Sections/1K:3.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w
Descriptive Headingsavg 4.8w
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...
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.
A
81/100
13
Passed
2
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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.
42/100
C
151 mg
CO₂e / view
1.2 MB
Page Weight
70%
Cleaner Than
New Visitor
173 mg
vs
Returning (cached)
86 mg
Annual (10K/mo)
18.1 kg
Emission Segments
Data Center
34 mg
Network
36 mg
Device
81 mg
Resource Breakdown
JavaScript
497.6 KB
Images
77.2 KB
CSS
129.9 KB
HTML
257.5 KB
Other
258.7 KB
Green Hosting Not Verified
Outscale SASU
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Static / Informational

HTTPS

No WAF

56d

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

Valid From

11.04.2026

Valid Until

10.07.2026

Subject Alternative Names (1)

impactco2.fr

SHA-256 Fingerprint

56:C8:A7:01:BE:51:75:19:68:F8:4F:AF:CD:62:74:4B:34:C5:C8:53...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
⚪ Custom(s-maxage=900, stale-while-revalidate=31535100)
content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self';base-uri 'self';font-src 'self' https: da...
content-type
text/html; charset=utf-8
date
Thu, 14 May 2026 16:56:25 GMT
etag
"k84dmjqz09ki6j"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.ox.numerique.gouv.fr

Domain Information

impactco2.fr

Domain Age
3y 8m

Created

15.09.2022

Expires

15.09.2026

Last Updated

18.09.2025

Registrar

NAMESHIELD

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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
67/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG AA
77/100
Readability
/30
19/30

16px · LH --

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
19/25

4.6:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans32px

Body Font

Arial

Sans16px

Contrast Ratio

4.6:1

WCAG AA (≥4.5:1)

Reading Comfort

~39 CPL

Narrow lines
32px
h1
32px
h2
16px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

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

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 44

Color Palette

9 unique colors
8.72:1 AAA Light
#ffffff
Background· 80.29999999999998%
#494c47
Other· 2.9%
#e1e8e7
Primary· 2.1%
#47887c
Secondary· 1.7%
#d6d2c8
Secondary· 1.7%
#b2d9d6
Secondary· 1.5%

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

Sponsored

Scripts & Styles

23 Resources

20
Scripts
3
Styles
19
Async
1
Defer

Top Script Sources

local(19)stats.beta.gouv.fr(1)

Website Identity

impactco2.fr

3 years old
Location detected: 🇫🇷 Francevia tld
NAMESHIELDfr

Social Profiles

GitHub

Sponsored

Last analyzed: 14 May 2026 at 16:56

Historical Analysis & Change Tracking