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

purdue.edu

https://purdue.edu· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

purdue.edu

Mobile

Sponsored

Hosting Provider

Purdue University

IP Address

128.210.7.200

Server Location

🇺🇸 West Lafayette, United States

ASN

AS17

Organization

Purdue University

Nameservers

ns3.purdue.edu.ns5.purdue.edu.ns4.purdue.edu.

Performance

Page Speed

17 KB

96 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9

cms

purdue-home-theme-betaCustom

Technology Stack

12 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Analytics

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

Advertising

Plugins

SEO Analysis

A88/100

purdue.edupurdue.edu

Purdue University

Purdue University is a world-renowned, public research university that advances discoveries in science, technology, engineering and math.

Title Length17 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

294d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 3s(max-age=3, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

21284

content-type

text/html; charset=UTF-8

date

Wed, 11 Feb 2026 00:48:13 GMT

Good Warning Issue

Typography & Readability

Impact + Franklin Gothic

78/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

18/25

8.75x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Impact

Display140px

Body Font

Franklin Gothic

Sans16px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

140px

24px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 8.8x larger than body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 50 elements lack adequate spacing.

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

purdue.edu(7)googletagmanager.com(3)youtube.com(2)c1.rfihub.net(1)cdn.boomtrain.com(1)

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Last analyzed: 11 Feb 2026 at 00:48

Historical Analysis & Change Tracking