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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xataka.com

https://xataka.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

xataka.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

18.165.140.49

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

CDN

CloudFront

Nameservers

ns-1736.awsdns-25.co.uk.ns-788.awsdns-34.net.ns-118.awsdns-14.com.ns-1462.awsdns-54.org.

Performance

Page Speed

1 MB

160 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Substack

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Meta Frameworks

Libraries

CSS Frameworks

Fonts

Tag Managers

Customer Support

Security

SEO Analysis

B72/100

xataka.comxataka.com

Xataka - Tecnología y gadgets, móviles, informática, electrónica

Publicación de noticias sobre gadgets y tecnología. Últimas tecnologías en electrónica de consumo y novedades tecnológicas en móviles, tablets, informática, etc

Title Length64 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1,110 URLs

robots.txt

146 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

186d

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

Valid From

21.07.2025

Valid Until

19.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.blogdecine.com*.moda.trendencias.com*.vitonica.com*.xataka.com.br*.directoalpaladar.com.mx*.3djuegosguias.com*.xatakahome.com*.decoracion.trendencias.com+12 more

SHA-256 Fingerprint

C1:58:B9:55:E5:9A:91:2D:F2:E2:8D:93:2F:51:DC:FC:F4:B3:78:31...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔵 Public(public, s-maxage=60)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

countrycode

date

Sat, 14 Feb 2026 22:44:27 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

+1 more

Domain Information

xataka.com

Domain Age

21y 6m

Created

26.07.2004

Expires

26.07.2026

Last Updated

26.06.2025

Registrar

NameCheap, 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

-apple-system + Arial

85/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

25/25

2.4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans36px

Body Font

Arial

Sans15px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

36px

14px

18px

15px

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

✅ 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.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

connect.facebook.net(4)apis.google.com(3)sdk.mrf.io(2)googletagmanager.com(2)cdn.lib.getjad.io(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

Sponsored

Last analyzed: 14 Feb 2026 at 22:44

Historical Analysis & Change Tracking