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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amnh.org

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

Export

amnh.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.26.244

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns0054.secondary.cloudflare.com.ns0249.secondary.cloudflare.com.

Performance

Page Speed

1 MB

155 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Google Ads LinkedIn Ads TikTok Pixel

Meta Frameworks

Libraries

Other

CSS Frameworks

Tag Managers

Other

CDN

SEO Analysis

A84/100

amnh.orgamnh.org

American Museum of Natural History | New York City

Explore the natural world, and the known universe. Open daily, 10 am–5:30 pm.

Title Length50 chars

Recommended: 50-60 chars

Description Length77 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

17 rules

Sitemap reference found

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

72d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.01.2026

Valid Until

26.04.2026

Subject Alternative Names (19)

*.amnh.org*.amphibiansoftheworld.amnh.org*.aws.amnh.org*.awsdr.amnh.org*.cbc.amnh.org*.dt-staging.internal.amnh.org*.dt-staging03.internal.amnh.org*.dt-staging04.internal.amnh.org+11 more

SHA-256 Fingerprint

07:5C:65:D0:0B:8A:EE:78:9A:23:0D:4B:E6:E2:C9:CE:AE:9E:FA:18...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

date

Fri, 13 Feb 2026 01:55:56 GMT

content-type

text/html; charset=UTF-8

server

cloudflare

expires

Fri, 13 Feb 2026 02:33:47 GMT

surrogate-control

content="ESI/1.0"

xkey

ez-all l435679 l432699 l435119 l415268 l415269 l436263 l4361...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

amnh-org.mail.protection.outlook.com

Domain Information

amnh.org

Domain Age

34y 10m

Created

12.04.1991

Expires

13.04.2028

Last Updated

02.12.2020

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Georgia + Helvetica

61/100

Readability

/30

40/40

17px · LH 1.50

Hierarchy

/20

18/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Georgia

Serif0

Body Font

Helvetica

Sans17px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

16px

44px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 9 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

TikTok PixelMid-Market

Ad platforms and retargeting pixels

A/B Testing & Optimization

AB TastyMid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(8)googletagmanager.com(4)connect.facebook.net(2)local(2)snap.licdn.com(1)

Website Identity

amnh.org

34 years old

Network Solutions, LLC📧 Microsoft 365

Social Profiles

Instagram YouTube

Sponsored

Last analyzed: 13 Feb 2026 at 01:56

Historical Analysis & Change Tracking