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.

Back to Search

qualys.com

https://qualys.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

qualys.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

162.159.152.21

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

seth.ns.cloudflare.com.tara.ns.cloudflare.com.

Performance

Page Speed

2.1 MB

196 requests

Image Optimization

Lazy LoadImageKit

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

11 Technologies Detected

Analytics

Meta Frameworks

UI Components

CSS Frameworks

Tag Managers

Customer Support

Advertising

Other

CDN

SEO Analysis

A88/100

qualys.comqualys.com

Enterprise Cyber Risk and Security Platform | Qualys

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Title Length52 chars

Recommended: 50-60 chars

Description Length150 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

32 rules

Sitemap reference found

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

47d

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/1.1

Valid From

06.01.2026

Valid Until

06.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

qualys.com*.qualys.com

SHA-256 Fingerprint

97:03:17:92:63:BB:6B:6C:8F:89:6D:D9:0C:3E:AC:69:E4:9C:AC:FA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

10547

cf-ray🇩🇪 Frankfurt

9cf39a8b4bab9193-FRA

cache-control

🟡 0s(public,max-age=0,must-revalidate)

cache-status

"Netlify Edge"; hit

connection

keep-alive

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mxa-001ca501.gslb.pphosted.com

mxb-001ca501.gslb.pphosted.com

Domain Information

qualys.com

Domain Age

27 years

Created

09.02.1999

Expires

09.02.2028

Last Updated

08.01.2026

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

Gotham + sans-serif

61/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

21/25

2.4x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Gotham

Sans36px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

36px

74px

24px

16px

15px

Minor Second

Scale

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

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

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

⚠️ Cramped layout: 40 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Customer Support

DriftMid-Market

Live chat and helpdesk tools

Behavior Analytics

Microsoft ClarityFree

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

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

clarity.ms(10)googletagmanager.com(2)munchkin.marketo.net(1)js.driftt.com(1)api.ipify.org(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

Sponsored

Last analyzed: 17 Feb 2026 at 07:34

Historical Analysis & Change Tracking