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

atlanticcouncil.org

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

Export

atlanticcouncil.org

Mobile

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.1

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Nginx

CDN

Fastly

Nameservers

norm.ns.cloudflare.com.fay.ns.cloudflare.com.

Performance

Page Speed

2.7 MB

127 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Framework

React

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Pantheon

CDN

Fastly

Detected API Sources

https://player.vimeo.com/api/p...

Technology Stack

21 Technologies Detected

Plugins

Cookie Notice Tooltips Pro Wplyr Media Block Content Visibility

Duracelltomi Google Tag Manager

Analytics

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Frameworks

Libraries

CSS Frameworks

Tag Managers

Marketing

Advertising

Web Servers

SEO Analysis

A88/100

atlanticcouncil.orgatlanticcouncil.org

Atlantic Council - Shaping the global future together

The Atlantic Council is a nonpartisan organization that galvanizes US global leadership and engagement in partnership with allies and partners.

Title Length53 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (16/19)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

8 rules

Sitemap reference found

Allows all crawlers

Sponsored

A+

Security Score

95%Excellent

Interactive

HTTPS

No WAF

47d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.01.2026

Valid Until

01.04.2026

Subject Alternative Names (12)

atlanticcouncil.orgcdn.atlanticcouncil.orgchinapathfinder.orgdfrlab.orgheatactionplatform.onebillionresilient.orgn7initiative.orgonebillionresilient.orgwww.atlanticcouncil.org+4 more

SHA-256 Fingerprint

13:30:F8:08:85:E2:1D:4A:74:AE:11:1D:D4:74:CC:9B:06:57:FC:F5...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-headers

Content-Type, Authorization

access-control-allow-methods

GET,POST

age

17912

cache-control

🔵 1 Week(public, max-age=604800)

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

atlanticcouncil-org.mail.protection.outlook.com

Domain Information

atlanticcouncil.org

Domain Age

19y 2m

Created

12.12.2006

Expires

12.12.2027

Last Updated

30.11.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

proxima-nova + sans-serif

78/100

Readability

/30

40/40

22px · LH 1.50

Hierarchy

/20

20/25

1.91x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

proxima-nova

Sans42px

Body Font

sans-serif

Sans22px

Contrast Ratio

Reading Comfort

~102 CPL

Needs attention

42px

40px

35px

25px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

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

⚠️ Wide lines: ~102 chars/line. Consider max-width for better reading flow.

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)atlanticcouncil.org(4)youtube.com(2)connect.facebook.net(2)snap.licdn.com(2)

Website Identity

atlanticcouncil.org

19 years old

GoDaddy.com, LLC📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 13 Feb 2026 at 05:10

Historical Analysis & Change Tracking