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

univ-lyon1.fr

https://univ-lyon1.fr· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

univ-lyon1.fr

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Hosting Provider

Centre Inter-etablissement pour les Services

IP Address

134.214.126.72

Server Location

🇫🇷 Décines-Charpieu, France

ASN

AS2060

Organization

Centre Inter-etablissement pour les Services

Server

Nginx

Nameservers

dns.univ-lyon1.fr.dns2.univ-lyon1.fr.ccpnvx.in2p3.fr.ccpntc3.in2p3.fr.

Performance

Page Speed

2.8 MB

58 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Centre Inter-etablissement pour les Services

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Social

Web Servers

SEO Analysis

C62/100

univ-lyon1.fruniv-lyon1.fr

Université Claude Bernard Lyon 1

Les activités de formation et de recherche dans les secteurs des sciences de la santé, des sciences et technologies et des sciences du sport, situent L'Unive...

Description truncated.

Title Length32 chars

Recommended: 50-60 chars

Description Length256 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (20/26)

4 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

28 rules

Sitemap reference found

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Security Score

56%Poor

Interactive

HTTPS

No WAF

59d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.04.2025

Valid Until

17.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.univ-lyon1.fruniv-lyon1.fr

SHA-256 Fingerprint

22:6B:8C:55:54:73:5F:93:17:CC:87:22:C9:C9:15:4D:D0:42:B6:9B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-language

en-GB

content-type

text/html;charset=UTF-8

date

Mon, 16 Feb 2026 20:57:11 GMT

server

nginx

strict-transport-security

max-age=63072000; includeSubdomains, max-age=31536000; inclu...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mailinblack.univ-lyon1.fr

Domain Information

univ-lyon1.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

GDPR Indicators

Typography & Readability

din_lightregular + Arial

56/100

Readability

/30

20/40

12px · LH 1.67

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

din_lightregular

Sans

Body Font

Arial

Sans12px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

22px

35px

12px

Golden Ratio

Scale

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 27 elements lack adequate spacing.

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Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

univ-lyon1.fr(8)local(2)

Website Identity

Facebook X (Twitter)Instagram

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Last analyzed: 16 Feb 2026 at 20:57

Historical Analysis & Change Tracking