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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barcelo.com

https://barcelo.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

barcelo.com

Sponsored

Hosting Provider

Akamai Technologies, Inc.

IP Address

104.126.37.129

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS20940

Organization

Akamai Technologies, Inc.

Server

Apache

Nameservers

a5-67.akam.net.a12-64.akam.net.a9-66.akam.net.a2-64.akam.net.+2 more

Performance

Page Speed

1.5 MB

177 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Web Servers

SEO Analysis

A88/100

barcelo.combarcelo.com

Barceló® Hotel Group - Hotels and Resorts | Barcelo.com

Book at the best Hotels and Resorts at the Best Guaranteed Price ✔ Enjoy the Barceló, Occidental, Allegro and Royal Hideaway experience!

Title Length55 chars

Recommended: 50-60 chars

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (151/215)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

32 URLs

robots.txt

138 rules

Sitemap reference found

Sponsored

Security Score

55%Poor

Critical / Transactional

HTTPS

No WAF

341d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.01.2026

Valid Until

23.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.barcelo.combarcelo.com

SHA-256 Fingerprint

7A:84:2E:21:29:4A:1B:00:9D:7F:6A:7B:A5:CC:DB:C8:17:5A:1E:6A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' https://*.stay-app.com;

content-type

text/html;charset=utf-8

date

Mon, 16 Feb 2026 21:04:02 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

barcelo-com.mail.protection.outlook.com

Domain Information

barcelo.com

Domain Age

29y 6m

Created

18.08.1996

Expires

17.08.2026

Last Updated

31.07.2025

Registrar

Entorno Digital, S.A.

DNSSEC

Not Enabled

Privacy & Compliance

Didomi

Cookie Consent Banner

Didomi

GDPR Indicators

Cookie consent banner detected

CMP: Didomi

Data Protection Officer mentioned

Typography & Readability

Museo Sans

73/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

18/25

2.4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Museo Sans

Sans36px

Body Font

Museo Sans

Sans15px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

36px

28px

24px

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.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Microsoft AdsEnterprise

CriteoEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

tags.tiqcdn.com(9)local(4)sdk.privacy-center.org(2)barcelo.com(2)googletagmanager.com(1)

Website Identity

barcelo.com

29 years old

Entorno Digital, S.A.📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 16 Feb 2026 at 21:04

Historical Analysis & Change Tracking