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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rockwool.com

https://rockwool.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

rockwool.com

Sponsored

Hosting Provider

Microsoft Azure

azure.microsoft.com

IP Address

20.76.241.59

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS8075

Organization

Microsoft Azure Cloud (westeurope)

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns6.markmonitor.com.ns3.markmonitor.com.ns4.markmonitor.com.ns7.markmonitor.com.+3 more

Performance

Page Speed

796 KB

52 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Plausible Analytics Microsoft Clarity

CSS Frameworks

Tag Managers

Marketing

Other

Other

Frameworks

SEO Analysis

A+90/100

rockwool.comrockwool.com

ROCKWOOL stone wool insulation

Our stone wool insulation is a key component in fire-resilient buildings.

Title Length30 chars

Recommended: 50-60 chars

Description Length73 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: index

149 URLs

robots.txt

11 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

WAF

122d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

22.12.2025

Valid Until

22.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.rockwool.com

SHA-256 Fingerprint

C3:AB:78:24:E2:C6:DD:BD:E4:E3:27:A2:6D:3F:5A:50:2C:BB:65:9D...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cf-cache-status

DYNAMIC

cf-ray

9d0c81c35f5b79df-DUB

content-encoding

📦 Gzip(gzip)

content-length

48186

content-type

text/html

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

rockwool-com.mail.protection.outlook.com

Domain Information

rockwool.com

Domain Age

29y 10m

Created

16.04.1996

Expires

17.04.2026

Last Updated

16.03.2024

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Arial + sans-serif

74/100

Readability

/30

32/40

15px · LH 1.50

Hierarchy

/20

14/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans0

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

16px

36px

28px

18px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

⚠️ Cramped layout: 27 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

PlausibleSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

consent.cookiebot.com(2)d-cdn.rockwool.com(2)googletagmanager.com(1)js.monitor.azure.com(1)plausible.io(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 20 Feb 2026 at 08:07

Historical Analysis & Change Tracking