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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kathimerini.gr

https://kathimerini.gr· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

kathimerini.gr

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.148.202

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

lola.ns.cloudflare.com.charles.ns.cloudflare.com.

Performance

Page Speed

1.9 MB

60 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://cdn-eu.piano.io/api/ti...

Technology Stack

13 Technologies Detected

Analytics

Meta Frameworks

Libraries

UI Components

CSS Frameworks

Tag Managers

Advertising

CDN

Languages

Customer Support

Plugins

SEO Analysis

A82/100

kathimerini.grkathimerini.gr

Νέα και Ειδήσεις από την Ελλάδα και τον Κόσμο | Η ΚΑΘΗΜΕΡΙΝΗ

Τα Νέα Σήμερα στην Ελλάδα και τον Κόσμο | Ειδήσεις Online και Έκτακτη Επικαιρότητα τώρα από τη Νο1 Ημερήσια Πολιτική και Οικονομική Εφημερίδα

Title Length60 chars

Recommended: 50-60 chars

Description Length142 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

338 URLs

robots.txt

70 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

88d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.02.2026

Valid Until

19.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

kathimerini.gr*.kathimerini.gr

SHA-256 Fingerprint

D3:5A:55:91:CE:E4:A0:90:1E:C7:A6:C7:C8:24:63:82:13:A7:5D:F5...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d0b3f20a9ee1c05-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

upgrade-insecure-requests

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (7)

aspmx3.googlemail.com

alt2.aspmx.l.google.com

aspmx2.googlemail.com

aspmx4.googlemail.com

+3 more

Domain Information

kathimerini.gr

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

UKASAntenna05Regular + AntennaSemiBold

53/100

Readability

/30

20/40

13px · LH 1.62

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

UKASAntenna05Regular

Sans

Body Font

AntennaSemiBold

Sans13px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

18px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.62 ratio ensures comfortable reading.

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 151 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.cxense.com(2)news.google.com(2)api-esp.piano.io(1)cdn-eu.piano.io(1)experience-eu.piano.io(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 20 Feb 2026 at 04:27

Historical Analysis & Change Tracking