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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ehu.es

https://ehu.es· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

ehu.es

Sponsored

Hosting Provider

Universidad del Pais Vasco - Euskal Herriko Unibertsitatea

IP Address

158.227.0.65

Server Location

🇪🇸 Bilbao, Spain

ASN

AS15488

Organization

Universidad del Pais Vasco - Euskal Herriko Unibertsitatea

Server

Apache

Nameservers

chico.rediris.es.sun.rediris.es.dns1.ehu.es.dns2.ehu.es.

Performance

Page Speed

1.3 MB

96 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Universidad del Pais Vasco - Euskal Herriko Unibertsitatea

Technology Stack

9 Technologies Detected

Analytics

Frameworks

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Payments

Web Servers

SEO Analysis

D58/100

ehu.esehu.es

University of the Basque Country - EHU

No description available for this page.

Title Length38 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (31/41)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

robots.txt

18 rules

Sitemap reference found

Sponsored

Security Score

15%Critical

Critical / Transactional

HTTPS

No WAF

212d

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

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

18.09.2025

Valid Until

18.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

*.ehu.eusehu.eus*.ehu.esehu.es

SHA-256 Fingerprint

A4:97:8B:65:81:FA:A9:5B:20:56:47:48:FC:D4:4D:16:1D:62:AC:6D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

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

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Tue, 17 Feb 2026 20:33:18 GMT

expires

Thu, 01 Jan 1970 00:00:00 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

ehu-es.mail.protection.outlook.com

Domain Information

ehu.es

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

ehuSans + sans-serif

79/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

20/25

1.6x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

ehuSans

Sans24px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

24px

15px

Minor Second

Scale

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 8 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)consent.cookiebot.com(2)cse.google.com(2)googletagmanager.com(1)google.com(1)

Website Identity

Facebook Instagram TikTok Bluesky

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Last analyzed: 17 Feb 2026 at 20:33

Historical Analysis & Change Tracking