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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kajabi.com

https://kajabi.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

kajabi.com

Sponsored

Hosting Provider

Webflow

webflow.com

IP Address

198.202.211.1

Server Location

🇺🇸 San Francisco, United States

ASN

AS209242

Organization

Webflow, Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

lennox.ns.cloudflare.com.galilea.ns.cloudflare.com.

Performance

Page Speed

476 KB

78 requests

Image Optimization

Lazy LoadWebPAVIFResponsiveFastly Image Optimizer

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Webflow

CDN

Cloudflare

Technology Stack

9 Technologies Detected

Analytics

Libraries

Other

UI Components

CSS Frameworks

Tag Managers

CDN

SEO Analysis

A+90/100

kajabi.comkajabi.com

Turn What You Know Into What You’re Known For | Kajabi

Kajabi is the operating system for human expertise—helping real experts build, sell, and grow trusted businesses with clarity, momentum, and AI-powered support.

Title Length54 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

1 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

56%Poor

Interactive

HTTPS

WAF

48d

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

09.01.2026

Valid Until

09.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.kajabi.com

SHA-256 Fingerprint

B9:8A:B7:8C:8F:81:97:55:77:20:86:29:9A:D2:03:FA:DC:98:40:2B...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age

77035

alt-svc

h3=":443"; ma=86400

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0b34575877d296-FRA

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx.l.google.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

aspmx2.googlemail.com

+1 more

Domain Information

kajabi.com

Domain Age

19y 8m

Created

23.06.2006

Expires

23.06.2026

Last Updated

22.11.2025

Registrar

1API GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Haffer

71/100

Readability

/30

32/40

24px · LH 1.20

Hierarchy

/20

18/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Haffer

Sans60px

Body Font

Haffer

Sans24px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

60px

32px

20px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.5x larger than 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.

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

⚠️ Cramped layout: 47 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

AmplitudeMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.jsdelivr.net(4)cdn.prod.website-files.com(2)googletagmanager.com(1)beehiiv-adnetwork-production.s3.amazonaws.com(1)cdn.amplitude.com(1)

Website Identity

X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 20 Feb 2026 at 04:19

Historical Analysis & Change Tracking