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.

LiteSpeed Cache - Websites Using LiteSpeed Cache

What Is LiteSpeed Cache?

LiteSpeed Cache (LSCache) is a free, comprehensive WordPress caching and optimization plugin designed to work with LiteSpeed Web Server for maximum performance. With over five million active installations, it is one of the most popular WordPress performance plugins, particularly favored by hosting providers running LiteSpeed server technology.

Server-Level Caching

When running on LiteSpeed Web Server or OpenLiteSpeed, LSCache operates at the server level rather than the PHP level, providing significantly faster cache serving than PHP-based caching plugins. Cached pages are served directly by the web server without invoking PHP, resulting in response times measured in milliseconds.

The plugin also functions as a comprehensive optimization tool on non-LiteSpeed servers (Apache, Nginx), though without the server-level caching advantage.

Page Optimization

CSS Optimization includes minification, combination, and critical CSS generation that inlines above-the-fold styles for faster rendering. JavaScript Optimization provides minification, combination, defer, and delay loading options. HTML Minification removes unnecessary whitespace and comments.

Image Optimization

The QUIC.cloud Image Optimization service compresses and converts images to WebP and AVIF formats through a cloud-based API. Images are optimized without quality loss at the selected compression level. Lazy loading defers off-screen image loading until they enter the viewport.

Object and Database Caching

Object Cache supports Redis and Memcached backends for caching database query results and computed values. Database Optimization cleans post revisions, auto-drafts, trashed posts, spam comments, and transient data to reduce database size and improve query performance.

CDN Integration

Built-in CDN support through QUIC.cloud provides global content distribution. The plugin also integrates with Cloudflare and other CDN providers for asset delivery optimization.

Crawler

The built-in Crawler automatically visits pages to generate and refresh cache entries, ensuring visitors always receive cached content rather than triggering cache generation on their first visit.

Why Choose LiteSpeed Cache

WordPress sites hosted on LiteSpeed servers choose LSCache for its unmatched server-level caching performance. Even on other servers, the comprehensive optimization features including image optimization, critical CSS, and database cleanup make it a compelling free alternative to premium caching plugins.

LiteSpeed Cache

Websites Using LiteSpeed Cache