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

carnegiehall.org

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

Export

carnegiehall.org

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.73.146

Server Location

🇺🇸 New York, United States

ASN

AS19551

Organization

Incapsula Inc

CDN

Nameservers

ns4-03.azure-dns.info.ns1-03.azure-dns.com.ns2-03.azure-dns.net.ns3-03.azure-dns.org.

Performance

Page Speed

1.3 MB

103 requests

Image Optimization

Lazy Loadimgix

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Alpine.js

Infrastructure

Hosting

Incapsula Inc

CDN

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

16 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising

Libraries

Other

Frameworks

UI Components

Other

CSS Frameworks

Tag Managers

Customer Support

SEO Analysis

B76/100

carnegiehall.orgcarnegiehall.org

Official Website | Carnegie Hall

Carnegie Hall's mission is to present extraordinary music and musicians, and to bring the transformative power of music to the widest possible audience.

Title Length32 chars

Recommended: 50-60 chars

Description Length152 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7,116 URLs

robots.txt

16 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

251d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

29.09.2025

Valid Until

29.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

carnegiehall.orgwww.carnegiehall.org

SHA-256 Fingerprint

84:11:0F:3F:61:94:19:97:2A:9D:E4:AB:39:28:8F:2A:81:85:9B:69...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ch

Sec-CH-UA,Sec-CH-UA-Mobile,Sec-CH-UA-Platform,Sec-CH-UA-Arch...

cache-control

🔴 No Cache(no-cache, no-store)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 06:50:17 GMT

expires

-1

Good Warning Issue

Email Infrastructure

Barracuda

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

d96828a.ess.barracudanetworks.com

d96828b.ess.barracudanetworks.com

Domain Information

carnegiehall.org

Domain Age

30y 10m

Created

04.05.1995

Expires

05.05.2026

Last Updated

03.12.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Fournier + Cadiz

79/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

18/25

4.21x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Fournier

Sans67px

Body Font

Cadiz

Sans16px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

67px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.75 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: 16 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

9 Tools Detected

Enterprise

Customer Support

ZendeskEnterprise

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Reddit PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)googletagmanager.com(4)connect.facebook.net(3)google-analytics.com(1)pixel.byspotify.com(1)

Website Identity

Facebook Instagram TikTok

Sponsored

Last analyzed: 20 Feb 2026 at 06:50

Historical Analysis & Change Tracking