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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ssllabs.com

https://ssllabs.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

ssllabs.com

Mobile

Sponsored

Hosting Provider

QUALYS, Inc.

IP Address

69.67.183.100

Server Location

🇺🇸 Phoenix, United States

ASN

AS27385

Organization

QUALYS, Inc.

Server

Apache

CDN

Cloudflare

WAF

Cloudflare

Nameservers

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

Performance

Page Speed

109 KB

19 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

QUALYS, Inc.

CDN

Cloudflare

Technology Stack

4 Technologies Detected

Analytics

Tag Managers

Web Servers

SEO Analysis

F35/100

ssllabs.comssllabs.com

Qualys SSL Labs

Bringing you the best SSL/TLS and PKI testing tools and documentation.

Title Length15 chars

Recommended: 50-60 chars

Description Length70 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

5 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

162d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.07.2025

Valid Until

24.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (19)

www.ssllabs.comssllabs.comapi.ssllabs.comclienttest.ssllabs.complaintext.ssllabs.comentrust.ssllabs.comglobalsign.ssllabs.comcasecurity.ssllabs.com+11 more

SHA-256 Fingerprint

9C:4A:E7:BF:51:70:EE:75:98:B8:DE:28:9E:1B:E7:FE:54:C2:54:D4...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, max-age=0, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-language

en-GB

content-length

2495

content-security-policy

default-src 'self' ssllabs.com *.ssllabs.com www.qualys.com ...

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (4)

ssllabs.com.s10b1.psmtp.com

ssllabs.com.s10b2.psmtp.com

ssllabs.com.s10a1.psmtp.com

ssllabs.com.s10a2.psmtp.com

Domain Information

ssllabs.com

Domain Age

17y 1m

Created

01.01.2009

Expires

01.01.2028

Last Updated

01.12.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Arial

63/100

Readability

/30

20/40

13px · LH 1.54

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

46px

24px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.54 ratio ensures comfortable reading.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using text-shadow for readability.

✅ Clean layout: Consistent left alignment throughout.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)google-analytics.com(1)qualys.com(1)

Sponsored

Last analyzed: 12 Feb 2026 at 23:01

Historical Analysis & Change Tracking