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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francetravail.fr

https://francetravail.fr· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

francetravail.fr

Mobile

Sponsored

Hosting Provider

PEP

IP Address

185.215.64.79

Server Location

🇫🇷 Paris, France

ASN

AS205461

Nameservers

nsa.perf1.fr.nsc.perf1.com.nsb.perf1.com.dns1.pole-emploi.fr.+1 more

Performance

Page Speed

192 KB

29 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

PEP

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://guidances-applicatives...

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

D41/100

francetravail.frfrancetravail.fr

Accueil | France Travail

Title Length24 chars

Recommended: 50-60 chars

Description Length24 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (5/5)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

15 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

96d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

22.05.2025

Valid Until

22.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

francetravail.frwww.francetravail.fr

SHA-256 Fingerprint

6A:68:09:88:AE:B9:4A:DA:3A:E5:41:ED:8F:F2:8C:6D:4E:83:6A:64...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 900s(max-age=900)

content-encoding

📦 Gzip(gzip)

content-length

5275

content-type

text/html

date

Sun, 15 Feb 2026 11:27:10 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

smtp1.francetravail.fr

Domain Information

francetravail.fr

Domain Age

10y 5m

Created

08.09.2015

Expires

04.09.2026

Last Updated

07.09.2025

Registrar

NAMESHIELD

DNSSEC

Not Enabled

Typography & Readability

Marianne + system-ui

71/100

Readability

/30

25/40

16px · LH 1.00

Hierarchy

/20

16/25

1.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Marianne

Sans24px

Body Font

system-ui

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

24px

16px

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

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.francetravail.fr(2)guidances-applicatives.francetravail.fr(2).(1)tag.aticdn.net(1)cdn.tagcommander.com(1)

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Last analyzed: 15 Feb 2026 at 11:27

Historical Analysis & Change Tracking