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

zdnet.fr

https://zdnet.fr· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

zdnet.fr

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.11.240

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

matt.ns.cloudflare.com.roxy.ns.cloudflare.com.

Performance

Page Speed

740 KB

76 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

cnet-zdnetCustom

Technology Stack

20 Technologies Detected

Advertising

Google Ads Google AdSense Taboola Outbrain

Plugins

Elasticpress Custom Espace Compte

CSS Frameworks

Analytics

Libraries

Other

Other

Tag Managers

Payments

CDN

Security

Customer Support

SEO Analysis

A88/100

zdnet.frzdnet.fr

ZDNET - Actualité, business et technologies pour les professionne ...

Actualité, business et technologies pour les professionnels

Title Length69 chars

Recommended: 50-60 chars

Description Length59 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1,088 URLs

robots.txt

24 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

61d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

22.01.2026

Valid Until

22.04.2026

Subject Alternative Names (2)

*.zdnet.frzdnet.fr

SHA-256 Fingerprint

16:8B:18:E3:FA:47:94:32:D0:91:C5:28:E5:E3:4A:FB:CF:83:2F:F9...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d0bbdf419688f3e-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

c12-ito-mail-relay2.cnet.com

c18-mail.cnet.com

c12-ito-mail-relay1.cnet.com

Domain Information

zdnet.fr

Domain Age

23y 11m

Created

24.03.2002

Expires

15.01.2027

Last Updated

16.01.2026

Registrar

CSC CORPORATE DOMAINS INC.

DNSSEC

Not Enabled

Privacy & Compliance

Didomi

Cookie Consent Banner

Didomi

GDPR Indicators

Cookie consent banner detected

CMP: Didomi

Data Protection Officer mentioned

Typography & Readability

Times New Roman + Source Sans Pro

62/100

Readability

/30

22/40

15px · LH --

Hierarchy

/20

20/25

1.6x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Times New Roman

Serif24px

Body Font

Source Sans Pro

Sans15px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

24px

22px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Optimal line length: ~50 characters per line is comfortable to read.

⚠️ Cramped layout: 36 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

prebid.reworldmediafactory.com(3)zdnet.fr(3)implcit.afcdn.com(2)sdk.mrf.io(2)sdk.privacy-center.org(2)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 20 Feb 2026 at 05:53

Historical Analysis & Change Tracking