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

princeton.edu

https://princeton.edu· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

princeton.edu

Mobile

Sponsored

Hosting Provider

Princeton University

IP Address

140.180.223.22

Server Location

🇺🇸 Princeton, United States

ASN

AS88

Organization

Princeton University

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

a6-64.akam.net.ns6.dnsmadeeasy.com.a7-65.akam.net.a20-65.akam.net.+5 more

Performance

Page Speed

1.4 MB

19 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

9 Technologies Detected

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Analytics

Libraries

CSS Frameworks

Icon Libraries

Advertising

CDN

SEO Analysis

A82/100

princeton.eduprinceton.edu

Home | Princeton University

Through teaching and research, we educate people who will contribute to society and develop knowledge that will make a difference in the world.

Title Length27 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

79d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age

413

cache-control

🟡 60s(max-age=60, public, s-maxage=2764800)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cbe7d8b4c83dcc2-FRA

content-encoding

📦 Gzip(gzip)

content-language

Good Warning Issue

Typography & Readability

Helvetica Neue

70/100

Readability

/30

32/40

14px · LH 1.57

Hierarchy

/20

18/25

7.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Helvetica Neue

Sans100px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

100px

60px

24px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.57 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 7.1x larger than body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 32 elements lack adequate spacing.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)googletagmanager.com(1)

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Last analyzed: 10 Feb 2026 at 20:52

Historical Analysis & Change Tracking