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.

Technology Comparison

Google Analytics Premium vs Google Tag Manager

Side-by-side comparison based on real-world adoption data from 7,096 detections across analyzed websites.

Market Share Distribution

Google Analytics Premium (0%)Google Tag Manager (100%)

Total Detections

Google Analytics Premium

7,068

Google Tag Manager

HIGHER

Websites Using

Google Analytics Premium

7,067

Google Tag Manager

HIGHER

Used Together

websites use both

0% OVERLAP

Google Analytics Premium

Analytics

Google Analytics Premium was a paid version of Google Analytics offering advanced features and higher data limits for large enterprises. It has since been superseded by Google Analytics 360.

28 detections

28 sites

Visit Website View Profile

Google Tag Manager

Analytics

Free tag management system for deploying marketing and analytics tags without code changes. Supports triggers, variables, and version control.

7,068 detections

7067 sites

Visit Website View Profile

Our Analysis

Google Tag Manager is significantly more popular than Google Analytics Premium in our dataset, appearing on 7067 websites compared to 28. 26 websites use both technologies together (0% overlap). Both are in the Analytics category, making them direct alternatives.

Frequently Asked Questions

What is the difference between Google Analytics Premium and Google Tag Manager?

Google Analytics Premium was a paid version of Google Analytics offering advanced features and higher data limits for large enterprises. It has since been superseded by Google Analytics 360. Free tag management system for deploying marketing and analytics tags without code changes. Supports triggers, variables, and version control. Both belong to the Analytics category, making them direct alternatives.

Which is more popular, Google Analytics Premium or Google Tag Manager?

Based on our analysis of real websites, Google Tag Manager is more widely adopted with 7,068 detections compared to Google Analytics Premium's 28.

Can Google Analytics Premium and Google Tag Manager be used together?

Yes! We've detected 26 websites that use both Google Analytics Premium and Google Tag Manager together, showing they can complement each other in certain setups.

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Find out if a website uses Google Analytics Premium, Google Tag Manager, or any other technology.

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Google Analytics Premium vs Google Tag Manager

Market Share Distribution

Google Analytics Premium

Google Tag Manager

Our Analysis

Sites Using Both (26)

Only Google Analytics Premium

Only Google Tag Manager

Frequently Asked Questions

What is the difference between Google Analytics Premium and Google Tag Manager?

Which is more popular, Google Analytics Premium or Google Tag Manager?

Can Google Analytics Premium and Google Tag Manager be used together?

Check Any Website's Technology Stack

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