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

Amazon CloudFront vs Fastly

Side-by-side comparison based on real-world adoption data from 2,070 detections across analyzed websites.

Market Share Distribution

Amazon CloudFront (56%)Fastly (44%)

Total Detections

1,150

Amazon CloudFront

HIGHER

920

Fastly

Websites Using

1,150

Amazon CloudFront

HIGHER

920

Fastly

Used Together

websites use both

Amazon CloudFront

Hosting

1,150 detections

1150 sites

Visit Website View Profile

Fastly

Hosting

Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.

920 detections

920 sites

Visit Website View Profile

Our Analysis

Amazon CloudFront has a slight edge over Fastly, detected on 1150 vs 920 websites. Both are in the Hosting category, making them direct alternatives.

Sites Using Both (0)

No sites use both technologies together.

Only Amazon CloudFront

10news.com 123rf.com 20min.ch 20minutos.es 2k.com 500px.com 6abc.com 7news.com.au 888casino.com a8.net

Only Fastly

10best.com 247sports.com 3ds.com 404media.co 8newsnow.com 99designs.com 9news.com.au aaas.org aad.org aafp.org

Frequently Asked Questions

What is the difference between Amazon CloudFront and Fastly?

Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency and high transfer speeds. It integrates seamlessly with AWS origin services like Amazon S3, Elastic Load Balancing, and Amazon EC2. Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services. Both belong to the Hosting category, making them direct alternatives.

Which is more popular, Amazon CloudFront or Fastly?

Based on our analysis of real websites, Amazon CloudFront is more widely adopted with 1,150 detections compared to Fastly's 920.

Can Amazon CloudFront and Fastly be used together?

In our current dataset, no websites use both technologies simultaneously. This suggests they typically serve as alternatives rather than complementary tools.

Check Any Website's Technology Stack

Find out if a website uses Amazon CloudFront, Fastly, or any other technology.

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