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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uva.es

https://uva.es· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

uva.es

Sponsored

Hosting Provider

Super.so

super.so

IP Address

157.88.25.8

Server Location

🇪🇸 Valladolid, Spain

ASN

AS44593

Organization

UVA

Server

Nginx

Nameservers

ns3.uva.es.sun.rediris.es.chico.rediris.es.ns1.uva.es.+1 more

Performance

Page Speed

817 KB

45 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Super.so

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Microsoft Clarity Segment

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

Web Servers

Nginx

SEO Analysis

C62/100

uva.esuva.es

UVa

La Universidad de Valladolid (UVa) es una universidad publica fundada en 1241 con cuatro campus. Imparte estudios de Grado, Master y Doctorado. Miembro del C...

Description truncated.

Title Length3 chars

Recommended: 50-60 chars

Description Length191 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

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Crawlability

Sitemap

Type: standard

123 URLs

robots.txt

11 rules

Sponsored

Security Score

66%Fair

Interactive

HTTPS

No WAF

275d

Certificate Details

Type

Domain Validated (DV)

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

19.11.2025

Valid Until

19.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.uva.esuva.es

SHA-256 Fingerprint

D6:B6:30:5E:B3:8D:83:7B:A6:2C:D0:5A:B5:55:A4:D8:0F:47:92:A7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 900s(max-age=900)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src 'self' https://www.uva.es https://comunicacion.u...

content-type

text/html

date

Mon, 16 Feb 2026 23:26:39 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

uva-es.mail.protection.outlook.com

Domain Information

uva.es

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Montserrat + Lato

49/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

11/25

1.27x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Montserrat

Sans30px

Body Font

Lato

Sans24px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

30px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

⚠️ Cramped layout: 15 elements lack adequate spacing.

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Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)googletagmanager.com(3)google-analytics.com(2)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

Facebook X (Twitter)Instagram YouTube Telegram

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Last analyzed: 16 Feb 2026 at 23:26

Historical Analysis & Change Tracking