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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cnam.fr

https://cnam.fr· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

cnam.fr

Sponsored

Hosting Provider

CNAM

IP Address

163.173.128.18

Server Location

🇫🇷 Bois-Colombes, France

ASN

AS2200

Server

Apache

Nameservers

ns2.nic.fr.thales.cnam.fr.asimov.cnam.fr.

Performance

Page Speed

1.9 MB

45 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CNAM

Technology Stack

4 Technologies Detected

Analytics

Matomo Microsoft Clarity

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

C64/100

cnam.frcnam.fr

Conservatoire national des arts et métiers - Cnam

No description available for this page.

Title Length49 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

12 rules

Sitemap reference found

Sponsored

Security Score

15%Critical

Critical / Transactional

HTTPS

No WAF

292d

Certificate Details

Type

Domain Validated (DV)

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/2

Valid From

08.12.2025

Valid Until

08.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.cnam.frcnam.fr

SHA-256 Fingerprint

ED:4A:8E:68:C1:AD:68:A4:3E:49:83:8F:44:E6:39:81:44:C5:96:4E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-language

en-GB

content-security-policy

content-type

text/html;charset=UTF-8

date

Wed, 18 Feb 2026 08:37:12 GMT

referrer-policy

no-referrer

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

incoming1.cnam.fr

incoming2.cnam.fr

Domain Information

cnam.fr

Domain Age

31y 1m

Created

31.12.1994

Expires

31.12.2026

Last Updated

31.01.2026

Registrar

GIP RENATER

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Crimson Pro + system-ui

45/100

Readability

/30

32/40

16px · LH 1.20

Hierarchy

/20

8/25

1x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Crimson Pro

Sans16px

Body Font

system-ui

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

16px

48px

28px

16px

Perfect Fifth

Scale

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

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

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 43 elements lack adequate spacing.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 18 Feb 2026 at 08:37

Historical Analysis & Change Tracking