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

aarp.org

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

Export

aarp.org

Mobile

Sponsored

Hosting Provider

Incapsula Inc

IP Address

45.60.172.55

Server Location

🇺🇸 San Mateo, United States

ASN

AS19551

Organization

Incapsula Inc

Server

Apache

CDN

CloudFront

Nameservers

pdns83.ultradns.org.pdns83.ultradns.biz.pdns83.ultradns.com.pdns83.ultradns.net.

Performance

Page Speed

764 KB

154 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Incapsula Inc

CDN

CloudFront

Detected API Sources

https://cdn.id5-sync.com/api/1...

Technology Stack

10 Technologies Detected

CSS Frameworks

Frameworks

Libraries

Fonts

Analytics

Advertising

Web Servers

Icon Libraries

Customer Support

SEO Analysis

A88/100

aarp.orgaarp.org

AARP® Official Site - Join & Explore the Benefits

AARP is the nation's largest nonprofit, nonpartisan organization dedicated to empowering Americans 50 and older to choose how they live as they age.

Title Length49 chars

Recommended: 50-60 chars

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (136/185)

1 issues found

Upgrade to view details

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

WAF

123d

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

460

cache-control

🟡 0s(s-maxage=900, max-age=0)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' appsec.aarp.org secure.aarp.org cms...

content-type

text/html; charset=UTF-8

Good Warning Issue

Typography & Readability

Lato + sans-serif

88/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

3x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Lato

Sans48px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

48px

30px

24px

20px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Protected text on images: Using gradient for readability.

GGoogle Fonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(6)tagan.adlightning.com(3)cdn.aarp.net(2)securepubads.g.doubleclick.net(2)cdn.id5-sync.com(1)

Website Identity

aarp.org

Sponsored

Last analyzed: 11 Feb 2026 at 06:17

Historical Analysis & Change Tracking