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.

Disclaimer

Last updated: January 9, 2025

General Disclaimer

The information provided by StackOptic is for general informational purposes only. All analysis results, technology detections, and recommendations are provided "as is" without warranty of any kind, either express or implied. The results should not be considered as definitive, official, or legally binding assessments.

Accuracy of Information

While we strive to provide accurate and up-to-date information, we make no representations or warranties about the completeness, accuracy, reliability, or availability of the analysis results.

Technology detection is based on publicly visible patterns and may not reflect the complete technology stack.
Security assessments are based on HTTP headers and do not constitute a comprehensive security audit.
Performance metrics are point-in-time measurements and may vary based on network conditions.
CMS and framework detection may produce false positives or miss certain technologies.

Not Professional Advice

StackOptic analysis results do not constitute:

Legal advice – consult a qualified attorney for legal matters.
Security audit – engage professional security consultants for comprehensive assessments.
Technical consultation – seek expert advice for critical technical decisions.
Business recommendations – conduct proper due diligence before making business decisions.

Third-Party Websites & Affiliate Links

StackOptic may contain links to third-party websites and affiliate links. We are not responsible for the content, privacy policies, or practices of any third-party sites. The inclusion of any link does not imply endorsement by StackOptic.

Some links may be affiliate links, meaning we may earn a commission if you make a purchase. This does not affect the objectivity of our analysis or the price you pay.

Limitation of Liability

In no event shall StackOptic, its operators, or contributors be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of the service, including but not limited to damages for loss of profits, data, or other intangible losses, even if we have been advised of the possibility of such damages.

Use at Your Own Risk

Your use of StackOptic is at your sole risk. The service is provided on an "AS IS" and "AS AVAILABLE" basis. We reserve the right to modify, suspend, or discontinue the service at any time without notice.

If you have any questions about this disclaimer, please contact us.