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

stackoverflow.com

https://stackoverflow.com· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

stackoverflow.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

198.252.206.1

Server Location

🇺🇸 New York, United States

ASN

AS13335

Organization

Stack Exchange, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

sureena.ns.cloudflare.com.damian.ns.cloudflare.com.

Performance

Page Speed

669 KB

75 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Magento

Technology Stack

17 Technologies Detected

Other

D3.js Chart.js Highcharts

Frameworks

Libraries

CSS Frameworks

Analytics

Advertising

Google Ads Google AdSense

Other

Other

CDN

Customer Support

SEO Analysis

B72/100

stackoverflow.comstackoverflow.com

Newest Questions - Stack Overflow

No description available for this page.

Title Length33 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

3 issues found

Upgrade to view details

Sponsored

Security Score

50%Poor

Critical / Transactional

HTTPS

WAF

39d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Tue, 10 Feb 2026 19:52:41 GMT

content-type

text/html; charset=utf-8

content-encoding

📦 Gzip(gzip)

cf-ray🇩🇪 Frankfurt

9cbe25f90c6e043a-FRA

cf-cache-status

DYNAMIC

cache-control

🟣 Private(private)

Good Warning Issue

Typography & Readability

-apple-system

30/100

Readability

/30

12/40

12px · LH 1.31

Hierarchy

/20

18/25

2.25x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans27px

Body Font

-apple-system

Sans12px

Contrast Ratio

Reading Comfort

~124 CPL

Needs attention

27px

16px

11px

19px

12px

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

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

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

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

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

❌ Very long lines: ~124 chars/line causes eye strain. Use max-width: 65ch.

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

stackoverflow.com(13)local(2)cdn.cookielaw.org(2)ajax.googleapis.com(1)accounts.google.com(1)

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Last analyzed: 10 Feb 2026 at 19:53

Historical Analysis & Change Tracking