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.

Back to Search

visitportugal.com

https://visitportugal.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

visitportugal.com

Sponsored

Hosting Provider

RCE SGE

IP Address

195.225.181.138

Server Location

🇵🇹 Lisbon, Portugal

ASN

AS202277

Organization

RCE SGE

Server

Nginx

CDN

Varnish

Nameservers

dns2.host-redirect.com.dns3.host-redirect.com.dns4.host-redirect.com.dns1.host-redirect.com.

Performance

Page Speed

24 KB

56 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

16 Technologies Detected

CSS Frameworks

Analytics

Libraries

Meta Frameworks

Other

UI Components

Other

Icon Libraries

Tag Managers

Social

Web Servers

SEO Analysis

D58/100

visitportugal.comvisitportugal.com

Homepage | www.visitportugal.com

No description available for this page.

Title Length32 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

80 rules

Sponsored

Security Score

10%Critical

Critical / Transactional

HTTPS

No WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

30.12.2025

Valid Until

30.03.2026

Subject Alternative Names (1)

www.visitportugal.com

SHA-256 Fingerprint

F7:9C:01:E4:CE:4E:26:03:B8:7F:ED:30:07:E3:09:2A:38:D0:99:48...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-credentials

true

access-control-allow-headers

Origin, Accept, X-Requested-With, Content-Type, Access-Contr...

access-control-allow-methods

GET, HEAD, OPTIONS, POST, PUT

access-control-allow-origin

www.visitportugal.com

akamai-grn

0.c6fc733e.1771365594.82c58d3

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

visitportugal-com.mail.protection.outlook.com

Domain Information

visitportugal.com

Domain Age

24y 3m

Created

06.11.2001

Expires

06.11.2026

Last Updated

11.08.2025

Registrar

eNom, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Arial

90/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans28px

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

28px

22px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

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

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.visitportugal.com(10)googletagmanager.com(5)cdn.appconsent.io(2)local(1)

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Last analyzed: 17 Feb 2026 at 22:00

Historical Analysis & Change Tracking