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.fr

https://actu.fr· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

actu.fr

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.165.104

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

marge.ns.cloudflare.com.oswald.ns.cloudflare.com.

Performance

Page Speed

372 KB

51 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Libraries

CSS Frameworks

Analytics

Tag Managers

Advertising

CDN

SEO Analysis

A+100/100

actu.fractu.fr

Actu : toute l'information locale et nationale en direct

L'actualité en continu dans vos régions et au plus près de chez vous en Normandie, Bretagne, Occitanie, Pays-de-La-Loire, Ile-de-France, Hauts-de-France…

Title Length56 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Gandi SAS

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.02.2025

Valid Until

24.02.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.actu.fractu.fr

SHA-256 Fingerprint

0F:26:63:BC:1A:73:55:95:B4:C5:1C:5A:D7:02:26:31:82:1B:65:7D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

354

cache-control

🟡 0s(max-age=0)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9ceb8b758d0ea8cb-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' http://actu.fr https://api.actu.fr ht...

Good Warning Issue

Email Infrastructure

Mimecast

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

de-smtp-inbound-1.mimecast.com

de-smtp-inbound-2.mimecast.com

Domain Information

actu.fr

Domain Age

25y 11m

Created

08.03.2000

Expires

12.05.2026

Last Updated

22.04.2025

Registrar

GANDI

DNSSEC

Not Enabled

Privacy & Compliance

Didomi

Cookie Consent Banner

Didomi

GDPR Indicators

Cookie consent banner detected

CMP: Didomi

Data Protection Officer mentioned

Typography & Readability

Inter-Bold + Arial

77/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Inter-Bold

Sans30px

Body Font

Arial

Sans15px

Contrast Ratio

Reading Comfort

~52 CPL

Optimal (45–75)

30px

20px

14px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Optimal line length: ~52 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Advertising

TaboolaMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

sdk.privacy-center.org(2)actu.fr(2)tag.aticdn.net(1)googletagmanager.com(1)static.actu.fr(1)

Website Identity

Facebook X (Twitter)Instagram TikTok Bluesky

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Last analyzed: 16 Feb 2026 at 08:06

Historical Analysis & Change Tracking