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.

Back to Search

cnrs.fr

https://cnrs.fr· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

cnrs.fr

Mobile

Sponsored

Hosting Provider

Cegedim S.A.

IP Address

80.94.184.70

Server Location

🇫🇷 Boulogne-Billancourt, France

ASN

AS12601

Organization

Cegedim S.A.

CDN

Nameservers

ns2.cnrs.fr.ns3.cnrs.fr.camus.dr15.cnrs.fr.ns1.renater.fr.+2 more

Performance

Page Speed

1.2 MB

58 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Fonts

Analytics

SEO Analysis

B74/100

cnrs.frcnrs.fr

Centre national de la recherche scientifique (CNRS)

Acteur majeur de la recherche fondamentale et de l’innovation à l’échelle mondiale, le Centre national de la recherche scientifique (CNRS) est le seul organi...

Description truncated.

Title Length51 chars

Recommended: 50-60 chars

Description Length313 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

301d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

09.12.2025

Valid Until

09.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.cnrs.frinee.cnrs.frwww.inee.cnrs.frinsu.cnrs.frin2p3.cnrs.frinp.cnrs.frinshs.cnrs.frwww.inp.cnrs.fr+12 more

SHA-256 Fingerprint

FC:FC:23:09:17:5F:F5:A0:B4:09:6D:24:CE:34:81:82:B1:2B:B2:67...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🔵 1 Days(max-age=86400, public)

content-language

content-security-policy

default-src 'self'; script-src 'self' *.axept.io *.cegedim.c...

content-type

text/html; charset=UTF-8

Good Warning Issue

Typography & Readability

Chivo + Libre Franklin

88/100

Readability

/30

40/40

16px · LH 1.60

Hierarchy

/20

25/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Chivo

Sans40px

Body Font

Libre Franklin

Sans16px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

40px

29px

22px

16px

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

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

✅ Good performance: Using 2 font families keeps load times fast.

⚠️ Cramped layout: 12 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)statistiques.cnrs.fr(2)static.axept.io(1)player.ausha.co(1)

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Last analyzed: 11 Feb 2026 at 10:42

Historical Analysis & Change Tracking