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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ethz.ch

https://ethz.ch· First analyzed 11 Feb 2026· Updated 11 Feb 2026

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ethz.ch

Mobile

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Hosting Provider

Swiss Federal Institute of Technology Zurich

IP Address

129.132.19.216

Server Location

🇨🇭 Zurich, Switzerland

ASN

AS559

Organization

Swiss Federal Institute of Technology Zurich

Nameservers

ns2.ethz.ch.ns2.switch.ch.ns1.ethz.ch.

Performance

Page Speed

3.9 MB

35 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Swiss Federal Institute of Technology Zurich

Technology Stack

6 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

SEO Analysis

C64/100

ethz.chethz.ch

ETH Zürich - Homepage | ETH Zürich

No description available for this page.

Title Length34 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 (20/27)

3 issues found

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Security Score

76%Good

Interactive

HTTPS

No WAF

193d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

512

cache-control

🟡 1 Hours(max-age=3600)

content-encoding

📦 Gzip(gzip)

content-length

15517

content-security-policy

frame-ancestors 'self'

Good Warning Issue

Typography & Readability

DINPro

76/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

13/25

1.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

DINPro

Sans40px

Body Font

DINPro

Sans24px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

40px

20px

24px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ 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.

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Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

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Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.cookielaw.org(1)googletagmanager.com(1)local(1)

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Last analyzed: 11 Feb 2026 at 03:11

Historical Analysis & Change Tracking