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

Ad Refresh Control vs Criteo

Side-by-side comparison based on real-world adoption data from 793 detections across analyzed websites.

Market Share Distribution

Ad Refresh Control (2%)Criteo (98%)

Total Detections

Ad Refresh Control

778

Criteo

HIGHER

Websites Using

Ad Refresh Control

778

Criteo

HIGHER

Used Together

websites use both

1% OVERLAP

Ad Refresh Control

Advertising

15 detections

15 sites

View Profile

Criteo

Advertising

Criteo provides personalised retargeting that works with Internet retailers to serve personalised online display advertisements to consumers who have previously visited the advertiser's website.

778 detections

778 sites

Visit Website View Profile

Our Analysis

Criteo is significantly more popular than Ad Refresh Control in our dataset, appearing on 778 websites compared to 15. 6 websites use both technologies together (1% overlap). Both are in the Advertising category, making them direct alternatives.

Frequently Asked Questions

What is the difference between Ad Refresh Control and Criteo?

Ad Refresh Control is a feature or setting within advertising platforms or ad management systems that allows publishers to define how frequently advertisements on their website or app are refreshed or reloaded. This impacts user experience and ad revenue by controlling ad viewability and impression opportunities. Criteo provides personalised retargeting that works with Internet retailers to serve personalised online display advertisements to consumers who have previously visited the advertiser's website. Both belong to the Advertising category, making them direct alternatives.

Which is more popular, Ad Refresh Control or Criteo?

Based on our analysis of real websites, Criteo is more widely adopted with 778 detections compared to Ad Refresh Control's 15.

Can Ad Refresh Control and Criteo be used together?

Yes! We've detected 6 websites that use both Ad Refresh Control and Criteo together, showing they can complement each other in certain setups.

Check Any Website's Technology Stack

Find out if a website uses Ad Refresh Control, Criteo, or any other technology.

Analyze a Website

More Comparisons

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Ad Refresh Control vs Criteo

Market Share Distribution

Ad Refresh Control

Criteo

Our Analysis

Sites Using Both (6)

Only Ad Refresh Control

Only Criteo

Frequently Asked Questions

What is the difference between Ad Refresh Control and Criteo?

Which is more popular, Ad Refresh Control or Criteo?

Can Ad Refresh Control and Criteo be used together?

Check Any Website's Technology Stack

More Comparisons