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

jyu.fi

https://jyu.fi· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

jyu.fi

Sponsored

Hosting Provider

University of Jyvaskyla

IP Address

130.234.6.163

Server Location

🇫🇮 Jyväskylä, Finland

ASN

AS1741

Organization

University of Jyvaskyla

Server

Apache

CDN

Varnish

Nameservers

ens2.jyu.fi.ns-secondary.funet.fi.ens1.jyu.fi.

Performance

Page Speed

2.5 MB

37 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Libraries

Other

CSS Frameworks

Icon Libraries

Analytics

Advertising

Web Servers

SEO Analysis

B76/100

jyu.fijyu.fi

Jyväskylän yliopiston verkkosivujen etusivu | Jyväskylän yliopisto

Jyväskylän yliopisto on Suomen suurimpia ja monialaisimpia tiedeyliopistoja. Kuudessa tiedekunnassamme voi opiskella yli sataa oppiainetta.

Title Length66 chars

Recommended: 50-60 chars

Description Length139 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

13 URLs

robots.txt

80 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

86d

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/2

Valid From

14.05.2025

Valid Until

14.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

jyu.fiwww.jyu.fi

SHA-256 Fingerprint

7F:C3:1F:13:DC:08:39:EB:93:6A:88:51:60:6C:03:60:0D:E4:08:0B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

226

cache-control

🟡 900s(max-age=900, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

24317

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mailgw2.jyu.fi

mailgw1.jyu.fi

Domain Information

jyu.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

Aleo + Lato

72/100

Readability

/30

22/40

15px · LH --

Hierarchy

/20

25/25

2.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Aleo

Sans40px

Body Font

Lato

Sans15px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

40px

27px

15px

24px

15px

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

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

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

✅ Clean layout: Consistent left alignment throughout.

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

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)policy.app.cookieinformation.com(2)jyu.piwik.pro(1)cdn.jsdelivr.net(1)cdn-eu.readspeaker.com(1)

Website Identity

Facebook Instagram YouTube

Sponsored

Last analyzed: 16 Feb 2026 at 19:20

Historical Analysis & Change Tracking