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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stanfordhealthcare.org

https://stanfordhealthcare.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.233.235.201

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Apache

Nameservers

ns-657.awsdns-18.net.ns-1310.awsdns-35.org.ns-1899.awsdns-45.co.uk.ns-485.awsdns-60.com.

Performance

Page Speed

1013 KB

29 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Analytics

Tag Managers

Web Servers

SEO Analysis

A84/100

stanfordhealthcare.orgstanfordhealthcare.org

Stanford Health Care (SHC) - Stanford Medical Center | Stanford Hea...

Stanford Health Care delivers the highest levels of care and compassion. SHC treats cancer, heart disease, brain disorders, primary care issues, and many more.

Title truncated.

Title Length75 chars

Recommended: 50-60 chars

Description Length159 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: standard

13,287 URLs

robots.txt

27 rules

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

198d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

08.08.2025

Valid Until

06.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

*.stanfordhealthcare.orgwww.stanfordhealthcare.orgstanfordhealthcare.org

SHA-256 Fingerprint

5B:3F:5F:E2:17:EB:EA:BB:8A:4F:58:4F:23:A5:D3:38:C6:7E:AA:14...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

3740

cache-control

🟡 12 Hours(max-age=43200)

content-encoding

📦 Gzip(gzip)

content-length

40219

content-type

text/html;charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

stanfordhealthcare-org.mail.protection.outlook.com

Domain Information

stanfordhealthcare.org

Domain Age

11y 8m

Created

20.06.2014

Expires

20.06.2026

Last Updated

22.11.2024

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Source Sans Pro

73/100

Readability

/30

32/40

18px · LH 1.39

Hierarchy

/20

18/25

3.56x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Source Sans Pro

Sans64px

Body Font

Source Sans Pro

Sans18px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

64px

30px

24px

18px

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

✅ Strong hierarchy: Headlines are 3.6x 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.

⚠️ Cramped layout: 21 elements lack adequate spacing.

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

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)assets.adobedtm.com(3)siteintercept.qualtrics.com(2)googletagmanager.com(1)zn6yf3gkbyv99pi86-shcpx.siteintercept.qualtrics.com(1)

Website Identity

Facebook X (Twitter)YouTube

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Last analyzed: 20 Feb 2026 at 07:06

Historical Analysis & Change Tracking