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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uzh.ch

https://uzh.ch· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

uzh.ch

Mobile

Sponsored

Hosting Provider

Universitaet Zuerich

IP Address

130.60.184.132

Server Location

🇨🇭 Zurich, Switzerland

ASN

AS559

Organization

Universitaet Zuerich

Server

Apache

Nameservers

ns1.uzh.ch.ns2.uzh.ch.ns3.uzh.ch.

Performance

Page Speed

2.5 MB

47 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Universitaet Zuerich

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

Meta Frameworks

Libraries

CSS Frameworks

Web Servers

SEO Analysis

C64/100

uzh.chuzh.ch

Universität Zürich | Universität Zürich | UZH

Die Universität Zürich gehört zu den besten Forschungsuniversitäten Europas und bietet das breiteste Angebot an Studienfächern in der Schweiz.

Title Length45 chars

Recommended: 50-60 chars

Description Length145 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (20/24)

4 issues found

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Crawlability

Sitemap

Type: standard

2,714 URLs

robots.txt

19 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.01.2026

Valid Until

17.04.2026

Subject Alternative Names (3)

uzh.chwww.uzh.chwww.uzh.edu

SHA-256 Fingerprint

FF:5C:14:C5:F7:22:20:0D:67:DA:98:10:28:A8:D4:2C:DF:CD:CA:E0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Thu, 12 Feb 2026 21:23:17 GMT

expires

Thu, 01 Jan 1970 00:00:00 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

uzh-ch.mail.protection.outlook.com

Domain Information

uzh.ch

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Source Sans Pro

71/100

Readability

/30

40/40

18px · LH 1.60

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Source Sans Pro

Sans18px

Body Font

Source Sans Pro

Sans18px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

18px

26px

18px

Minor Third

Scale

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

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

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)webstats.uzh.ch(1)

Website Identity

Facebook Instagram LinkedIn TikTok

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Last analyzed: 12 Feb 2026 at 21:23

Historical Analysis & Change Tracking