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

aacr.org

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

Export

aacr.org

Sponsored

Hosting Provider

Liquid Web, L.L.C

IP Address

199.189.226.196

Server Location

🇺🇸 Ashburn, United States

ASN

AS32244

Organization

Liquid Web, L.L.C

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

auth00.dcat.masergy.com.auth00.dfwb.masergy.com.

Performance

Page Speed

1.3 MB

81 requests

Image Optimization

WebPResponsiveUploadcare

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

AACR Theme 2019

by Weidenhammer Digital

Technology Stack

18 Technologies Detected

Plugins

Widget Logic Email Subscribers Premium Cookie Notice Events Manager

Analytics

Facebook Pixel Crazy Egg

Advertising

Twitter Ads LinkedIn Ads Snapchat Pixel

Libraries

CSS Frameworks

Tag Managers

CDN

SEO Analysis

A82/100

aacr.orgaacr.org

American Association for Cancer Research (AACR)

The AACR is the first and largest cancer research organization. Our mission is to prevent and cure cancer through research, education, communication, collabo...

Description truncated.

Title Length47 chars

Recommended: 50-60 chars

Description Length254 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

46 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

10.01.2026

Valid Until

10.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.aacr.org

SHA-256 Fingerprint

A2:EB:87:DC:80:10:69:F5:D6:25:5E:70:E5:F7:19:8A:B1:CC:9F:58...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9d0d1ca0ba4165a6-FRA

content-encoding

zstd

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

aacr-org.mail.protection.outlook.com

Domain Information

aacr.org

Domain Age

29y 11m

Created

23.03.1996

Expires

24.03.2031

Last Updated

28.01.2026

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

Data Protection Officer mentioned

Typography & Readability

Gotham A

62/100

Readability

/30

24/40

14px · LH 1.30

Hierarchy

/20

15/25

1.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Gotham A

Sans16px

Body Font

Gotham A

Sans14px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

16px

40px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

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

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

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 59 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Crazy EggSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

aacr.org(8)script.crazyegg.com(2)connect.facebook.net(2)google-analytics.com(2)googletagmanager.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 20 Feb 2026 at 09:52

Historical Analysis & Change Tracking