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

iu.edu

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

Export

iu.edu

Mobile

Sponsored

Hosting Provider

Indiana University

IP Address

129.79.123.143

Server Location

🇺🇸 Bloomington, United States

ASN

AS87

Organization

Indiana University

Nameservers

dns1.iu.edu.dns3.iu.edu.dns2.iu.edu.

Performance

Page Speed

587 KB

75 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Indiana University

Detected API Sources

https://player.vimeo.com/api/p...

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Google Ads LinkedIn Ads Snapchat Pixel

Libraries

CSS Frameworks

Fonts

Tag Managers

SEO Analysis

A80/100

iu.eduiu.edu

Bring On Tomorrow: Solving tomorrow's problems today

Indiana University empowers students to succeed through top-ranked academics, groundbreaking research, and service that strengthens Indiana and beyond.

Title Length52 chars

Recommended: 50-60 chars

Description Length151 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

27 rules

Sitemap reference found

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

127d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Internet2

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

18.06.2025

Valid Until

18.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

iu.eduwww.iu.edu

SHA-256 Fingerprint

9B:5E:DF:C8:1D:BC:03:06:46:DD:CF:1D:A7:38:DA:37:CB:90:25:C4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

content-encoding

📦 Gzip(gzip)

content-length

27338

content-type

text/html; charset=UTF-8

date

Wed, 11 Feb 2026 13:21:48 GMT

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

iu-edu.mail.protection.outlook.com

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

-apple-system + BentonSans

86/100

Readability

/30

40/40

18px · LH 1.78

Hierarchy

/20

25/25

4.22x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

-apple-system

Sans76px

Body Font

BentonSans

Sans18px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

76px

26px

20px

18px

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

✅ Optimal line spacing: 1.78 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.2x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 15 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Snapchat PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(6)connect.facebook.net(3)snap.licdn.com(2)a.dpmsrv.com(1)ib.adnxs.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 11 Feb 2026 at 13:21

Historical Analysis & Change Tracking