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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europapress.es

https://europapress.es· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

europapress.es

Mobile

Sponsored

Hosting Provider

Cdn77 FRA

IP Address

79.127.211.129

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS60068

Organization

Cdn77 FRA

Nameservers

dns3.p04.nsone.net.dns4.p04.nsone.net.dns1.p04.nsone.net.dns2.p04.nsone.net.

Performance

Page Speed

170 KB

61 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cdn77 FRA

Technology Stack

7 Technologies Detected

Analytics

Meta Frameworks

UI Components

CSS Frameworks

Fonts

Advertising

SEO Analysis

C62/100

europapress.eseuropapress.es

Europa Press - Agencia de noticias

Noticias y actualidad de España y del mundo. Política, economía, deportes, cultura, ciencia, ocio y sociedad.

Title Length35 chars

Recommended: 50-60 chars

Description Length109 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

45 rules

Sitemap reference found

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

214d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

ZeroSSL

Key Algorithm

RSA (4096 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.09.2025

Valid Until

15.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

europapress.esamp.europapress.esm.europapress.eswww.europapress.comwww.europapress.es

SHA-256 Fingerprint

7B:48:21:3A:29:88:A3:23:46:1A:FC:3C:FD:9C:60:72:1D:19:02:B0...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-expose-headers

Request-Context

age

cache-control

🟡 60s(public, max-age=60, s-maxage=60, stale-while-revalidate=60, ...)

content-encoding

📦 Gzip(gzip)

content-language

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

poster1i.iberlayer.com

poster3i.iberlayer.com

poster4i.iberlayer.com

poster2i.iberlayer.com

Domain Information

europapress.es

DNSSEC

Not Enabled

Privacy & Compliance

Didomi

Cookie Consent Banner

Didomi

GDPR Indicators

Cookie consent banner detected

CMP: Didomi

Typography & Readability

Heebo + Arial

64/100

Readability

/30

12/40

13px · LH 1.85

Hierarchy

/20

25/25

2.62x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Heebo

Sans34px

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

~46 CPL

Optimal (45–75)

34px

29px

17px

15px

13px

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

✅ Strong hierarchy: Headlines are 2.6x 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.

✅ Optimal line length: ~46 characters per line is comfortable to read.

GGoogle Fonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)sdk.privacy-center.org(2)es-config.sensic.net(1)madrid.report.botm.transparentedge.io(1)tags.refinery89.com(1)

Website Identity

Facebook LinkedIn YouTube

Sponsored

Last analyzed: 13 Feb 2026 at 02:00

Historical Analysis & Change Tracking