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

du.edu

https://du.edu· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

du.edu

Mobile

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.1

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

ns1.p201.dns.oraclecloud.net.ns2.p201.dns.oraclecloud.net.ns3.p201.dns.oraclecloud.net.ns4.p201.dns.oraclecloud.net.

Performance

Page Speed

2.1 MB

163 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

18 Technologies Detected

Advertising

Google Ads Google AdSense LinkedIn Ads TikTok Pixel Microsoft Advertising

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Crazy Egg

CSS Frameworks

Tailwind CSS

Foundation

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

UI Components

Tag Managers

Web Servers

Customer Support

SEO Analysis

B76/100

du.edudu.edu

University of Denver

At the University of Denver, learning leads to momentum. Discover programs, careers with purpose, and experiences that take you beyond the classroom.

Title Length20 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

35 rules

Sitemap reference found

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.02.2026

Valid Until

04.05.2026

Subject Alternative Names (20)

1day4du.du.eduadminapps.du.eduaging.du.edualumnitravel.du.edualumniweekend.du.edubiology.du.edubootcamp.du.educannabiseducation.du.edu+12 more

SHA-256 Fingerprint

F7:10:B7:9B:A2:46:BD:FC:2D:C4:0C:54:74:8A:E4:18:A8:8D:CC:72...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

192

cache-control

🟡 1800s(max-age=1800, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

40497

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxb-00241a02.gslb.pphosted.com

mxa-00241a02.gslb.pphosted.com

Domain Information

du.edu

DNSSEC

Not Enabled

Privacy & Compliance

Termly

Cookie Consent Banner

Termly

GDPR Indicators

Cookie consent banner detected

CMP: Termly

Typography & Readability

neue-haas-unica + sans-serif

66/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

25/25

4.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

neue-haas-unica

Sans78px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~79 CPL

Optimal (45–75)

78px

24px

45px

20px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.3x larger than 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.

⚠️ Risky: Text appears on background images without overlay protection.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

9 Tools Detected

Enterprise

Behavior Analytics

Crazy EggSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

TikTok PixelMid-Market

Microsoft AdsEnterprise

Reddit PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

TermlySMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(5)googletagmanager.com(3)snap.licdn.com(3)connect.facebook.net(2)script.crazyegg.com(1)

Website Identity

du.edu

Social Profiles

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 14 Feb 2026 at 02:19

Historical Analysis & Change Tracking