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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unesco.org

https://unesco.org· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

unesco.org

$Desktop screenshot of unesco.org$

$Mobile screenshot of unesco.org$

Mobile

Sponsored

Hosting Provider

The United Nations Educational, Scientific and Cultural Organization

IP Address

193.242.192.41

Server Location

🇫🇷 Fontenoy, France

ASN

AS3215

Organization

The United Nations Educational, Scientific and Cultural Organization

CDN

Nameservers

ns.unicc.org.ns1.unesco.org.ns-nadc.unicc.org.ns0.unesco.org.

Performance

Page Speed

1.5 MB

41 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

8 Technologies Detected

Analytics

Frameworks

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Email Marketing

SEO Analysis

B76/100

unesco.orgunesco.org

UNESCO : Building Peace through Education, Science and Culture, com...

Learn more about UNESCO's role, vision and results. UNESCO is the United Nations Educational, Scientific and Cultural Organization. Our aim is to promote pea...

Title truncated. Description truncated.

Title Length93 chars

Recommended: 50-60 chars

Description Length206 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (30/38)

3 issues found

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Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

116d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

transfer-encoding

chunked

x-content-type-options

nosniff

x-xss-protection

1; mode=block

accept-ranges

bytes

age

12365

cache-control

🟡 4 Hours(max-age=14400, public)

Good Warning Issue

Typography & Readability

Inter

53/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

18/25

3.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Inter

Sans60px

Body Font

Inter

Sans18px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

60px

36px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.3x 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.

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

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Matomo (Piwik)Mid-Market

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)local(2)tag.aticdn.net(1)

Sponsored

Last analyzed: 10 Feb 2026 at 20:17

Historical Analysis & Change Tracking