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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uvigo.es

https://uvigo.es· First analyzed 20 Feb 2026· Updated 20 Feb 2026

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uvigo.es

Sponsored

Hosting Provider

Universidad de Vigo

IP Address

193.146.32.200

Server Location

🇪🇸 Vigo, Spain

ASN

AS766

Organization

Universidad de Vigo

Server

Apache

Nameservers

dns2.uvigo.es.sun.rediris.es.chico.rediris.es.dns.uvigo.es.

Performance

Page Speed

2.1 MB

86 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Universidad de Vigo

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

Libraries

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

B70/100

uvigo.esuvigo.es

Inicio | Universidade de Vigo

A Universidade de Vigo é unha institución pública, innovadora e con vocación internacional. Ten unha ampla oferta en títulos de grao, posgrao, mestrados e pr...

Description truncated.

Title Length29 chars

Recommended: 50-60 chars

Description Length256 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

Type: index

11 URLs

robots.txt

57 rules

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

341d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

28.01.2026

Valid Until

28.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.uvigo.gal

SHA-256 Fingerprint

6F:41:88:D0:CA:84:44:68:27:F7:EA:F3:AD:AE:9C:E1:63:29:83:94...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(must-revalidate, no-cache, private)

content-encoding

📦 Gzip(gzip)

content-language

content-length

33365

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 10:53:40 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx03.puc.rediris.es

mx04.puc.rediris.es

Domain Information

uvigo.es

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Roboto Thin + Roboto Light

51/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

21/25

3.12x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

10/20

4 fonts

Heading Font

Roboto Thin

Sans50px

Body Font

Roboto Light

Sans16px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

50px

30px

22px

21px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 65 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)google-analytics.com(1)googletagmanager.com(1)app.unigow.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok

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Last analyzed: 20 Feb 2026 at 10:53

Historical Analysis & Change Tracking