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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20min.ch

https://20min.ch· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

20min.ch

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.13.189

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

CDN

CloudFront

Nameservers

jermaine.ns.cloudflare.com.june.ns.cloudflare.com.

Performance

Page Speed

4.5 MB

214 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

⚙️ SSR

Frontend

Framework

Next.js

Infrastructure

Hosting

Cloudflare

CDN

CloudFront

Technology Stack

9 Technologies Detected

Meta Frameworks

CSS Frameworks

Analytics

Tag Managers

Email Marketing

Advertising

Other

Security

SEO Analysis

D55/100

20min.ch20min.ch

20 Minuten: Aktuelle Nachrichten, Schlagzeilen - News von Jetzt

Alle News auf einen Blick: Beim grössten Schweizer Nachrichtenportal findest du 24/7 Aktuelles, Bilder, Hintergründe und Videos aus der Schweiz und Welt.

Title Length63 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (75/102)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

153 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Static / Informational

HTTPS

No WAF

286d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

29.10.2025

Valid Until

27.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (10)

www.20min.ch*.lessentiel.20min.chwww.lessentiel.luv1.20min.ch*.www.20min.ch*.www.lematin.ch*.v1.20min.ch*.www.lessentiel.lu+2 more

SHA-256 Fingerprint

36:75:94:47:B1:4B:F4:02:62:DB:3B:66:A2:C0:78:7B:37:CD:23:4E...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 60s(max-age=60)

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src 'unsafe-inline' 'self' https: wss: data:; img-sr...

content-type

text/html; charset=utf-8

date

Sat, 14 Feb 2026 00:09:20 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

20min.ch

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Matter-Regular + Matter-Medium

63/100

Readability

/30

32/40

16px · LH 1.25

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Matter-Regular

Sans

Body Font

Matter-Medium

Sans16px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

24px

16px

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

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

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

⚠️ Cramped layout: 100 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

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(14)sb.scorecardresearch.com(1)sst.20min.ch(1)cdn.cookielaw.org(1)dev.visualwebsiteoptimizer.com(1)

Website Identity

20min.ch

📧 Google Workspace

Social Profiles

Facebook Instagram LinkedIn TikTok

Sponsored

Last analyzed: 14 Feb 2026 at 00:09

Historical Analysis & Change Tracking