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?

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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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mountsinai.org

https://mountsinai.org· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

mountsinai.org

Mobile

Sponsored

Hosting Provider

Mount Sinai School of Medicine

IP Address

146.203.138.44

Server Location

🇺🇸 New York, United States

ASN

AS11452

Organization

Mount Sinai School of Medicine

Server

Apache

CDN

Akamai

WAF

Akamai

Nameservers

a1-223.akam.net.a9-66.akam.net.a18-67.akam.net.a11-66.akam.net.+2 more

Performance

Page Speed

3.3 MB

112 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Mount Sinai School of Medicine

CDN

Akamai

Technology Stack

14 Technologies Detected

Libraries

CSS Frameworks

Analytics

Meta Frameworks

UI Components

Other

Icon Libraries

Fonts

Tag Managers

Web Servers

Customer Support

SEO Analysis

B72/100

mountsinai.orgmountsinai.org

Mount Sinai Health System - New York City | Mount Sinai - New York

Located in New York City, the Mount Sinai Health System is an integrated health care system providing exceptional patient care to our local and global commun...

Description truncated.

Title Length67 chars

Recommended: 50-60 chars

Description Length163 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

robots.txt

66 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

68d

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

20.04.2025

Valid Until

22.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

mountsinai.organalyticscenter.mountsinai.orgappcenter.mountsinai.orgcarelink.mountsinaiconnect.orgcarelinkdev.mountsinaiconnect.orgcarelinktst.mountsinaiconnect.orgcheardatacenter.mssm.eduepicclnkhswebprd.carelink.mountsinaiconnect.org+12 more

SHA-256 Fingerprint

5D:26:91:43:88:5D:B5:6B:E0:6F:5B:64:2A:79:A8:21:42:0C:9E:C9...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-headers

Authorization, X-Requested-With, Content-Type, Accept, Origi...

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-length

32703

content-type

text/html;charset=UTF-8

date

Fri, 13 Feb 2026 23:31:07 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (10)

smtp-agent03.mountsinai.org

smtp-agent12.mountsinai.org

smtp-agent13.mountsinai.org

smtp-agent04.mountsinai.org

+6 more

Domain Information

mountsinai.org

Domain Age

29y 12m

Created

23.02.1996

Expires

24.02.2031

Last Updated

31.12.2025

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Mount Sinai Sans + Arial

76/100

Readability

/30

40/40

19px · LH 1.40

Hierarchy

/20

8/25

1.42x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Mount Sinai Sans

Sans27px

Body Font

Arial

Sans19px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

27px

30px

24px

18px

19px

✅ Excellent readability: 19px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)mountsinai.containers.piwik.pro(2)assets.sitescdn.net(2)cdnjs.cloudflare.com(2)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Pinterest

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Last analyzed: 13 Feb 2026 at 23:31

Historical Analysis & Change Tracking