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

stjude.org

https://stjude.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

stjude.org

Mobile

Sponsored

Hosting Provider

Alsac - MEM

IP Address

68.208.80.132

Server Location

🇺🇸 Memphis, United States

ASN

AS6389

Organization

Alsac - MEM

Server

Apache

CDN

Akamai

WAF

Akamai

Nameservers

ns11.stjude.org.a16-64.akam.net.a5-67.akam.net.a2-66.akam.net.+4 more

Performance

Page Speed

1.2 MB

71 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Facebook Pixel Sentry

Libraries

Other

CSS Frameworks

Web Servers

Customer Support

SEO Analysis

A+94/100

stjude.orgstjude.org

St. Jude Children's Research Hospital

A leading children’s hospital, St. Jude treats the toughest childhood cancers and pediatric diseases. Learn about patient referrals, and donate so families n...

Description truncated.

Title Length37 chars

Recommended: 50-60 chars

Description Length216 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7,644 URLs

robots.txt

33 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

WAF

33d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.03.2025

Valid Until

19.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.stjude.orgstjude.org

SHA-256 Fingerprint

65:1C:C3:D9:EB:C0:9F:D5:30:A9:7D:DE:05:46:ED:8F:72:83:ED:32...

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' giftshop.stjude.org sjcrh.sharepoint....

content-type

text/html; charset=UTF-8

date

Sat, 14 Feb 2026 11:43:24 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

stjude-org.mail.protection.outlook.com

Domain Information

stjude.org

Domain Age

36y 11m

Created

29.03.1989

Expires

30.03.2026

Last Updated

31.03.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

SJ Sans

66/100

Readability

/30

40/40

18px · LH 1.69

Hierarchy

/20

25/25

3.38x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

SJ Sans

Sans62px

Body Font

SJ Sans

Sans18px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

62px

27px

15px

18px

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

✅ Optimal line spacing: 1.69 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.4x 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.

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

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(8)p11.techlab-cdn.com(4)cdn.cookielaw.org(2)sm.stjude.org(1)gstatic.com(1)

Website Identity

Facebook Instagram YouTube

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Last analyzed: 14 Feb 2026 at 11:44

Historical Analysis & Change Tracking