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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iiss.org

https://iiss.org· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

iiss.org

Sponsored

Hosting Provider

Episerver Stockholm

IP Address

217.114.94.2

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS30811

Organization

Episerver Stockholm

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns46.domaincontrol.com.ns45.domaincontrol.com.

Performance

Page Speed

71.9 MB

93 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Framework

React

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Episerver Stockholm

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://pi-live.sagepay.com/ap...

Technology Stack

9 Technologies Detected

Frameworks

CSS Frameworks

Libraries

Fonts

Analytics

Tag Managers

CDN

SEO Analysis

B70/100

iiss.orgiiss.org

The International Institute for Strategic Studies

We are a world-leading authority on global security, political risk and military conflict.

Title Length49 chars

Recommended: 50-60 chars

Description Length90 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (71/71)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

5,621 URLs

robots.txt

3 rules

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

WAF

36d

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

Valid From

26.12.2025

Valid Until

26.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.iiss.org

SHA-256 Fingerprint

E0:CB:C2:40:C2:AF:BB:13:86:EA:6E:61:5D:DC:13:31:F1:9A:83:05...

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers

Origin, X-Requested-With, Content-Type, Accept

access-control-allow-origin

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cfbd3e6eeec3727-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

default-src 'self' data: mediastream: blob: filesystem: ws: ...

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

iiss-org.mail.protection.outlook.com

Domain Information

iiss.org

Domain Age

28y 10m

Created

07.04.1997

Expires

08.04.2026

Last Updated

15.07.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Playfair Display + serif

51/100

Readability

/30

25/40

18px · LH 2.22

Hierarchy

/20

18/25

3.56x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Playfair Display

Serif64px

Body Font

serif

Serif18px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

64px

32px

18px

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

⚠️ Wide line spacing (2.22). Consider 1.4-1.8 for better flow.

✅ Strong hierarchy: Headlines are 3.6x 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.

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

GGoogle Fonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

gstatic.com(1)googletagmanager.com(1)cdn-ukwest.onetrust.com(1)google.com(1)pi-live.sagepay.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 18 Feb 2026 at 07:32

Historical Analysis & Change Tracking