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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utu.fi

https://utu.fi· First analyzed 17 Feb 2026· Updated 17 Feb 2026

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utu.fi

Sponsored

Hosting Provider

University of Turku

IP Address

130.232.246.90

Server Location

🇫🇮 Turku, Finland

ASN

AS1741

Organization

University of Turku

Nameservers

ns-02.utu.fi.ns1.utu.fi.ns-secondary.funet.fi.

Performance

Page Speed

1.3 MB

36 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Analytics

Tag Managers

Advertising

SEO Analysis

A+90/100

utu.fiutu.fi

Turun yliopisto

Turun yliopisto on 25 000 opiskelijan ja työntekijän aktiivinen akateeminen yhteisö. Tutkimme, opetamme ja teemme työtä paremman tulevaisuuden puolesta.

Title Length15 chars

Recommended: 50-60 chars

Description Length152 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: index

9 URLs

robots.txt

53 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

289d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.12.2025

Valid Until

03.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

utu.fiwww.utu.fi

SHA-256 Fingerprint

0F:52:63:D1:4A:8B:AB:85:26:86:1E:D6:92:C2:5C:55:5A:79:FF:2D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

3469

cache-control

🟢 1 Month(max-age=16588800, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

14340

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtp-in.utu.fi

Domain Information

utu.fi

Domain Age

35y 1m

Created

01.01.1991

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Playfair Display + Noto Sans

81/100

Readability

/30

40/40

20px · LH 1.67

Hierarchy

/20

18/25

2.2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Playfair Display

Serif44px

Body Font

Noto Sans

Sans20px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

44px

27px

18px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.addtoany.com(3)consent.cookiebot.com(2)local(2)googletagmanager.com(1)mtm.utu.fi(1)

Website Identity

Facebook Instagram YouTube TikTok Bluesky

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Last analyzed: 17 Feb 2026 at 03:13

Historical Analysis & Change Tracking