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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univ-lorraine.fr

https://univ-lorraine.fr· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

univ-lorraine.fr

Sponsored

Hosting Provider

U Lorraine

IP Address

193.50.135.38

Server Location

🇫🇷 Nancy, France

ASN

AS2200

Organization

U Lorraine

Server

Apache

Nameservers

orion.ciril.fr.arcturus.ciril.fr.

Performance

Page Speed

1.2 MB

84 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

GeneratePressv3.6.0

by Tom Usborne

View Theme

Technology Stack

25 Technologies Detected

Plugins

Post Views Counter Popup Maker Accordion Blocks

Contact Form 7

Contact Form 7 Multi Step Module

Ul Api Factuel Ul Api Formul Ul Api Trouver Complianz Gdpr Widget Options Cf7 Conditional Fields Wp Featherlight Gp Premium Menu In Post Ewww Image Optimizer

Libraries

Frameworks

Meta Frameworks

Other

CSS Frameworks

Icon Libraries

Advertising

Web Servers

SEO Analysis

A88/100

univ-lorraine.fruniv-lorraine.fr

Accueil - Université de Lorraine

L'Université de Lorraine couvre tous les domaines scientifiques, pour innover et accompagner les évolutions de notre société

Title Length32 chars

Recommended: 50-60 chars

Description Length124 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (168/194)

1 issues found

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Crawlability

Sitemap

Type: index

robots.txt

7 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

293d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

07.12.2025

Valid Until

07.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

*.peta.univ-lorraine.fr*.pweb.univ-lorraine.fr*.infra.univ-lorraine.fr*.univ-lorraine.fr

SHA-256 Fingerprint

C4:FC:70:CF:6E:72:89:6B:36:B0:4E:B3:33:0A:1A:16:BD:89:9F:20...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

none

cache-control

🟡 3s(max-age=3, must-revalidate, max-age=3600, private)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 16:37:51 GMT

expires

Tue, 17 Feb 2026 17:37:51 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx1.relay.renater.fr

mx2.relay.renater.fr

Domain Information

univ-lorraine.fr

Domain Age

20y 11m

Created

22.03.2005

Expires

05.06.2026

Last Updated

31.07.2025

Registrar

GIP RENATER

DNSSEC

Not Enabled

Privacy & Compliance

Complianz

Cookie Consent Banner

Complianz

GDPR Indicators

Cookie consent banner detected

CMP: Complianz

Typography & Readability

Roboto Condensed + Maven Pro

46/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

25/25

3.75x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Roboto Condensed

Sans45px

Body Font

Maven Pro

Sans12px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

45px

30px

16px

19px

12px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.8x larger than body text.

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

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

⚠️ Cramped layout: 28 elements lack adequate spacing.

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

Privacy & Cookies

ComplianzSMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

univ-lorraine.fr(15)local(4)webstats.univ-lorraine.fr(1)

Website Identity

Facebook Instagram YouTube Discord Threads Bluesky

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Last analyzed: 17 Feb 2026 at 16:38

Historical Analysis & Change Tracking