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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nationalacademies.org

https://nationalacademies.org· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

Mobile

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Hosting Provider

National Academy of Sciences

IP Address

144.171.1.16

Server Location

🇺🇸 Washington, United States

ASN

AS7301

Organization

National Academy of Sciences

CDN

Fastly

Nameservers

a28-67.akam.net.a5-65.akam.net.a6-66.akam.net.a16-67.akam.net.+2 more

Performance

Page Speed

895 KB

49 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

HubSpot CMS

Infrastructure

Hosting

National Academy of Sciences

CDN

Fastly

Technology Stack

7 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

Marketing

Advertising

SEO Analysis

B70/100

nationalacademies.orgnationalacademies.org

National Academies of Sciences, Engineering, and Medicine

Our work helps shape sound policies, inform public opinion, and advance the pursuit of science, engineering, and medicine.

Title Length57 chars

Recommended: 50-60 chars

Description Length122 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

58d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

connection

keep-alive

content-length

373532

date

Wed, 11 Feb 2026 10:30:52 GMT

strict-transport-security

max-age=31557600

Good Warning Issue

Typography & Readability

Merriweather

66/100

Readability

/30

40/40

27px · LH 1.40

Hierarchy

/20

13/25

1.89x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Merriweather

Serif51px

Body Font

Merriweather

Serif27px

Contrast Ratio

Reading Comfort

~167 CPL

Needs attention

51px

35px

16px

27px

✅ Excellent readability: 27px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

❌ Very long lines: ~167 chars/line causes eye strain. Use max-width: 65ch.

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Business & Marketing Stack

7 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)snap.licdn.com(1)scripts.clarity.ms(1)js.hs-banner.com(1)js.hs-analytics.net(1)

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Last analyzed: 11 Feb 2026 at 10:31

Historical Analysis & Change Tracking