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

nouvelobs.com

https://nouvelobs.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

nouvelobs.com

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.194.132

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

obs.ns1.fr.ns3.nameshield.net.ns2.observatoiredesmarques.fr.

Performance

Page Speed

125 KB

27 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

10 Technologies Detected

CSS Frameworks

Bootstrap

Tailwind CSS

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Advertising

Snapchat Pixel Outbrain

Frameworks

Libraries

Meta Frameworks

Customer Support

SEO Analysis

A88/100

nouvelobs.comnouvelobs.com

Le Nouvel Obs - Actualités en France et dans le monde

Le Nouvel Obs - Magazine d’actualité français. Découvrez toutes les analyses en direct de l’actualité politique, sociale, culturelle, en France et dans le mo...

Description truncated.

Title Length53 chars

Recommended: 50-60 chars

Description Length161 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

336 rules

Sponsored

A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

378d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.01.2026

Valid Until

26.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

*.nouvelobs.com

SHA-256 Fingerprint

33:C1:FA:DE:D3:C1:30:E4:8F:80:18:94:73:34:1B:47:93:DC:B5:C4...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 120s(public, max-age=120)

content-encoding

⚡ Brotli(br)

content-length

28176

content-security-policy

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

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (6)

alt3.aspmx.l.google.com

alt1.aspmx.l.google.com

alt4.aspmx.l.google.com

aspmx.l.google.com

+2 more

Domain Information

nouvelobs.com

Domain Age

28y 1m

Created

19.01.1998

Expires

18.01.2027

Last Updated

16.01.2026

Registrar

Nameshield SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

latino-gothic-variable + sans-serif

61/100

Readability

/30

20/40

14px · LH 1.60

Hierarchy

/20

18/25

2.44x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

latino-gothic-variable

Sans33px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

33px

15px

16px

14px

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.4x 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.

AAdobe Fonts Buy on MyFontsVariable Fonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)applets.ebxcdn.com(1)cmp.nouvelobs.com(1)cdn.sitestream.co(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok Bluesky

Sponsored

Last analyzed: 13 Feb 2026 at 08:30

Historical Analysis & Change Tracking