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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icann.org

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

Export

icann.org

Mobile

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Hosting Provider

ICANN

IP Address

192.0.43.7

Server Location

🇺🇸 Anthony, United States

ASN

AS16876

Organization

ICANN

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

c.icann-servers.net.ns.icann.org.b.icann-servers.net.a.icann-servers.net.

Performance

Page Speed

592 KB

92 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

5 Technologies Detected

Frameworks

CSS Frameworks

Fonts

Analytics

CDN

SEO Analysis

D52/100

icann.orgicann.org

Internet Corporation for Assigned Names and Numbers (ICANN)

ICANN’s mission is to help ensure a stable, secure, and unified global Internet.

Title Length59 chars

Recommended: 50-60 chars

Description Length80 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

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Security Score

76%Good

Interactive

HTTPS

WAF

60d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Wed, 11 Feb 2026 01:08:49 GMT

content-type

text/html; charset=utf-8

server

cloudflare

x-ratelimit-remaining

180

x-ratelimit-requested-tokens

x-ratelimit-burst-capacity

200

Good Warning Issue

Typography & Readability

Noto Sans + sans-serif

61/100

Readability

/30

32/40

32px · LH 1.25

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Sans

Sans

Body Font

sans-serif

Sans32px

Contrast Ratio

Reading Comfort

~63 CPL

Optimal (45–75)

24px

20px

16px

32px

✅ Excellent readability: 32px body text is ideal for all devices.

✅ 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.

✅ Optimal line length: ~63 characters per line is comfortable to read.

⚠️ Cramped layout: 8 elements lack adequate spacing.

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Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

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Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.cookielaw.org(3)polyfills-6YOLJV4E.js(1)scripts-46WXS36Y.js(1)main-7P4VBV3J.js(1)static.cloudflareinsights.com(1)

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Last analyzed: 11 Feb 2026 at 01:09

Historical Analysis & Change Tracking