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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leprogres.fr

https://leprogres.fr· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

leprogres.fr

Sponsored

Hosting Provider

Credit Mutuel group's public

IP Address

145.226.55.19

Server Location

🇫🇷 Strasbourg, France

ASN

AS8255

Organization

Credit Mutuel group's public

Server

eiws

Nameservers

ldnsse1p.e-i.net.ldnsie2p.e-i.net.ldnsse2p.e-i.net.ldnsie1p.e-i.net.

Performance

Page Speed

19 KB

84 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Credit Mutuel group's public

Technology Stack

9 Technologies Detected

Analytics

Meta Frameworks

Libraries

CSS Frameworks

Tag Managers

Advertising

Microsoft Advertising

Customer Support

Zendesk

Security

reCAPTCHA

SEO Analysis

B76/100

leprogres.frleprogres.fr

Le Progrès : info et actu nationale et régionale - Rhône, Loire, Ai...

Actualités A la une générale : en direct, photos et vidéos. Restez informés avec Le Progrès

Title truncated.

Title Length89 chars

Recommended: 50-60 chars

Description Length91 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6,195 URLs

robots.txt

60 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

65%Fair

Critical / Transactional

HTTPS

No WAF

68d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

26.03.2025

Valid Until

26.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.leprogres.frleprogres.fr

SHA-256 Fingerprint

E9:24:B9:D0:04:09:84:67:D5:3D:0E:12:62:42:96:1E:A4:64:75:DF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

cache-control

🟡 55s(public, max-age=55)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src data: 'unsafe-inline' 'unsafe-eval' https:; scri...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

smtp1-inkp.e-i.net

smtp1-insp.e-i.net

Domain Information

leprogres.fr

Domain Age

29y 10m

Created

24.04.1996

Expires

29.06.2026

Last Updated

31.07.2025

Registrar

EURO INFORMATION

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Lucida Bright

48/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Lucida Bright

Sans

Body Font

Lucida Bright

Sans12px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

13px

28px

14px

12px

Perfect Fourth

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 276 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn-files.prsmedia.fr(10)bat.bing.com(2)sdk.privacy-center.org(2)googletagmanager.com(1)boot.dev.pbstck.com(1)

Website Identity

Sponsored

Last analyzed: 17 Feb 2026 at 05:16

Historical Analysis & Change Tracking