What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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actu-environnement.com

https://actu-environnement.com· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

Mobile

Sponsored

Hosting Provider

Datacampus Hosting

IP Address

109.69.189.105

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS50446

Organization

Datacampus Hosting

Server

Apache

Nameservers

a.dns.gandi.net.c.dns.gandi.net.b.dns.gandi.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.8 s10%

Speed Index

4.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.1 MB

119 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Datacampus Hosting

Technology Stack

10 Technologies Detected

Analytics

CSS Frameworks

Libraries

UI Components

Tag Managers

Advertising

Web Servers

SEO Analysis

C62/100

Meta Tags8/15

Content10/12

Headings8/8

Technical16/25

E-E-A-T2/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

actu-environnement.comactu-environnement.com

Actu Environnement : actualité, news, newsletter environnement et d...

Média d'informations indépendant sur l'environnement et le développement durable, Actu-Environnement diffuse chaque jour des actualités sociétales, technique...

Title truncated. Description truncated.

Title Length87 chars

Recommended: 50-60 chars (~531px / 580px)

Description Length185 chars

Recommended: 120-160 chars

Issues (2)

• Title is too long (87 chars, ~531px). Will be truncated in search results.
• Most images missing alt text (36/64) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

131 rules

Local SEO

Local Search Readiness

14/100

Poor

4 14

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D44/100

Bot Access

16/25

Machine Read.

12/25

Schema Data

3/25

Citation

13/25

AI Bot Access

8/14 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:13%

Words:1,821

Token eff.:Optimal

Sections/1K:23.6

Depth:2/5

Structured Data

1 JSON-LD

Organization×1.1

sameAs entity links

Citation Readiness

Opening Summary42w

Descriptive Headingsavg 8.8w

Canonical URL

Open Graph3/3

Twitter Card0/3

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.

51/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

14/20

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

7/15

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.

26/100

420 mg

CO₂e / view

4.1 MB

Page Weight

15%

Cleaner Than

New Visitor

480 mg

Returning (cached)

240 mg

Annual (10K/mo)

50.4 kg

Emission Segments

Data Center

21 mg

Network

124 mg

Device

276 mg

Resource Breakdown

JavaScript

364.7 KB

Images

3.6 MB

CSS

125.5 KB

HTML

21.4 KB

Green Hosting Verified

Datacampus

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

76%Good

Interactive

HTTPS

No WAF

57d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

22.05.2025

Valid Until

21.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

actu-environnement.comwww.actu-environnement.com

SHA-256 Fingerprint

1E:97:32:93:1E:F2:35:CC:A6:33:E6:AA:C8:6B:1B:AD:0C:C6:CA:96...

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-length

21592

content-security-policy

default-src https: 'unsafe-inline' 'unsafe-eval'; object-src...

content-type

text/html; charset=ISO-8859-1

date

Sat, 25 Apr 2026 20:57:37 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

actuenvironnement-com01b.mail.protection.outlook.com

Domain Information

actu-environnement.com

Domain Age

23y 3m

Created

29.01.2003

Expires

29.01.2027

Last Updated

29.12.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

52/100

Mobile Friendly5 breakpoints

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=1.0

5 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Verdana

WCAG Partial

52/100

Readability

/30

12/30

13px · LH 1.38

Hierarchy

/20

10/20

1.31x ratio · ✓ H1→H6

WCAG

/25

16/25

1.23:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Verdana

Sans17px

Body Font

Verdana

Sans13px

Contrast Ratio

1.23:1

11 issues

Reading Comfort

~43 CPL

Narrow lines

17px

20px

16px

13px

Minor Second

Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.2:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFlesch 54

Color Palette

6 unique colors

9:1 AAA Dark

#494949

Text· 41.6%

#ffffff

Background· 18%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)googletagmanager.com(4)connect.facebook.net(2)snap.licdn.com(1)

Website Identity

Actu-Environnement

Organization

www.actu-environnement.com/

23 years old

Location detected: 🇫🇷 Francevia ip

Gandi SAS📧 Microsoft 365

Social Profiles

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 25 Apr 2026 at 20:58

Historical Analysis & Change Tracking