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

inist.fr

https://inist.fr· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

inist.fr

Sponsored

Hosting Provider

Cnrs DR Nancy

IP Address

193.54.110.70

Server Location

🇫🇷 Paris, France

ASN

AS2200

Organization

Cnrs DR Nancy

Server

Apache

Nameservers

ns102.inist.fr.ns4.cnrs.fr.ns101.inist.fr.

Performance

Page Speed

1.5 MB

61 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

Inistv2.0

by Inist-Cnrs

View Theme

Technology Stack

10 Technologies Detected

Plugins

Sugar Calendar Lite Feedzy Rss Feeds

Libraries

CSS Frameworks

Analytics

Web Servers

Languages

Security

SEO Analysis

A82/100

inist.frinist.fr

Inist - Institut de l'Information Scientifique et Technique | CNRS

Institut de l'Information Scientifique et Technique - Information et services numériques pour la recherche - IST - science ouverte

Title Length66 chars

Recommended: 50-60 chars

Description Length130 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (20/23)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

237d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

14.10.2025

Valid Until

14.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.inist.frinist.fr

SHA-256 Fingerprint

6F:5C:E8:65:65:EB:AF:B0:09:E7:DC:29:53:B5:DC:3C:6B:29:68:43...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

19395

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 10:47:57 GMT

link

<https://www.inist.fr/wp-json/>; rel="https://api.w.org/"

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

pxmxmail-1.inist.fr

pxmxmail-2.inist.fr

Domain Information

inist.fr

Domain Age

31y 1m

Created

31.12.1994

Expires

31.12.2026

Last Updated

31.01.2026

Registrar

GIP RENATER

DNSSEC

Not Enabled

Typography & Readability

Barlow

76/100

Readability

/30

30/40

22px · LH --

Hierarchy

/20

25/25

2.32x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Barlow

Sans51px

Body Font

Barlow

Sans22px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

51px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 12 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

inist.fr(16)gstatic.com(1)piwik2.inist.fr(1)ajax.googleapis.com(1)google.com(1)

Website Identity

Facebook Instagram LinkedIn YouTube Bluesky

Sponsored

Last analyzed: 19 Feb 2026 at 10:48

Historical Analysis & Change Tracking