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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illinoisstate.edu

https://illinoisstate.edu· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

illinoisstate.edu

Sponsored

Hosting Provider

Illinois State University

IP Address

138.87.50.5

Server Location

🇺🇸 Normal, United States

ASN

AS7386

Organization

Illinois State University

Server

Apache

Nameservers

ens1.ilstu.edu.awsens2.ilstu.edu.

Performance

Page Speed

3.5 MB

56 requests

Image Optimization

Lazy LoadResponsiveimgix

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Illinois State University

CDN

Imgix

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Facebook Pixel Matomo

Libraries

UI Components

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

B70/100

illinoisstate.eduillinoisstate.edu

Illinois State University - Illinois’ first public university

Founded in 1857, Illinois State University is a top ranked public university in the town of Normal. Explore ISU's 200+ programs and the Redbird community.

Title Length61 chars

Recommended: 50-60 chars

Description Length155 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

robots.txt

5 rules

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

30d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Internet2

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

19.12.2025

Valid Until

19.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

ilstu.edu*.illinoisstate.edu*.ilstu.eduillinoisstate.edu

SHA-256 Fingerprint

5F:A8:AA:98:30:F1:33:33:4F:FC:93:01:C9:3B:EB:1E:D7:B7:B6:6C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 20:29:50 GMT

keep-alive

timeout=5, max=100

server

Apache

strict-transport-security

max-age=157680000

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

illinoisstate-edu.mail.protection.outlook.com

Domain Information

illinoisstate.edu

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

ISUCondBold + ISULight

69/100

Readability

/30

40/40

23px · LH 1.60

Hierarchy

/20

18/25

2.16x ratio

WCAG

/25

11/15

Contrast: undefined

Performance

/25

10/20

4 fonts

Heading Font

ISUCondBold

Sans49px

Body Font

ISULight

Sans23px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

49px

63px

31px

23px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 47 elements lack adequate spacing.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.illinoisstate.edu(5)connect.facebook.net(3)local(2)matomo-web-office.apps.paas03.ilstu.edu(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok

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Last analyzed: 17 Feb 2026 at 20:30

Historical Analysis & Change Tracking