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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itu.int

https://itu.int· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

itu.int

Mobile

Sponsored

Hosting Provider

ITU Geneva

IP Address

156.106.253.250

Server Location

🇨🇭 Geneva, Switzerland

ASN

AS8414

Organization

ITU Geneva

Nameservers

ns6.itu.ch.ns7.itu.ch.ns8.itu.ch.ns.itu.ch.+3 more

Performance

Page Speed

1.5 MB

98 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

ITU Geneva

Technology Stack

11 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Social

Customer Support

SEO Analysis

D58/100

itu.intitu.int

ITU: Connecting the world and beyond

The United Nations agency for digital technologies

Title Length36 chars

Recommended: 50-60 chars

Description Length50 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag - page may not be mobile-friendly

6 issues found

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Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

50d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-length

34301

content-security-policy

frame-ancestors 'self' teams.microsoft.com *.teams.microsoft...

content-type

text/html; charset=utf-8

date

Wed, 11 Feb 2026 00:04:22 GMT

Good Warning Issue

Typography & Readability

DroidSerifRegular + Arial

45/100

Readability

/30

20/40

11px · LH 1.50

Hierarchy

/20

18/25

2.54x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

DroidSerifRegular

Serif28px

Body Font

Arial

Sans11px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

28px

18px

11px

❌ Critical: 11px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

⚠️ Risky: Text appears on background images without overlay protection.

✅ Optimal line length: ~49 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

ContentsquareEnterprise

User behavior and product analytics

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)googletagmanager.com(3)static.hotjar.com(2)google-analytics.com(2)cse.google.com(1)

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Last analyzed: 11 Feb 2026 at 00:04

Historical Analysis & Change Tracking