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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sipri.org

https://sipri.org· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

sipri.org

Mobile

Sponsored

Hosting Provider

SUNET C

IP Address

193.10.14.94

Server Location

🇸🇪 Solna, Sweden

ASN

AS1653

Server

Apache

Nameservers

ns1.sipri.org.ns2.sipri.org.sunic.sunet.se.

Performance

Page Speed

601 KB

28 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

6 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Analytics

Advertising

Web Servers

SEO Analysis

C64/100

sipri.orgsipri.org

Home | SIPRI

Stockholm International Peace Research Institute (SIPRI): the independent resource on global security

Title Length12 chars

Recommended: 50-60 chars

Description Length101 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

56 URLs

robots.txt

59 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

20%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔵 1 Days(max-age=86400, public)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

13048

content-type

text/html; charset=UTF-8

content-language

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

sipri-org.mail.protection.outlook.com

Domain Information

sipri.org

Domain Age

28y 4m

Created

16.10.1997

Expires

15.10.2026

Last Updated

23.08.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

ITCFranklinGothicStd-Book + Georgia

41/100

Readability

/30

20/40

12px · LH 1.40

Hierarchy

/20

18/25

4x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

ITCFranklinGothicStd-Book

Sans48px

Body Font

Georgia

Serif12px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

48px

16px

21px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.0x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 29 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)stats.sipri.org(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

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Last analyzed: 14 Feb 2026 at 07:42

Historical Analysis & Change Tracking