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.

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coindesk.com

https://coindesk.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

coindesk.com

Mobile

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

elmo.ns.cloudflare.com.brit.ns.cloudflare.com.

Performance

Page Speed

2.4 MB

242 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

🔀 Hybrid

Decoupled

Frontend

Framework

Next.js

Styling

Tailwind CSS

API

Data Source

Headless CMS

Sanity

Infrastructure

Hosting

Vercel

CDN

Cloudflare

Detected API Sources

/_next/image?url=https%3A%2F%2...

Technology Stack

15 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Amplitude Microsoft Clarity

Advertising

Google Ads Google AdSense LinkedIn Ads Microsoft Advertising

Meta Frameworks

CSS Frameworks

Tag Managers

Marketing

CDN

Customer Support

SEO Analysis

A80/100

coindesk.comcoindesk.com

CoinDesk: Bitcoin, Ethereum, XRP, Crypto News and Price Data

Leader in cryptocurrency, Bitcoin, Ethereum, XRP, blockchain, DeFi, digital finance and Web 3.0 news with analysis, video and live price updates.

Title Length60 chars

Recommended: 50-60 chars

Description Length145 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

Upgrade to view details

Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

75d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cc2bd18dff51c2c-FRA

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

Good Warning Issue

Typography & Readability

Family

33/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Family

Sans

Body Font

Family

Sans18px

Contrast Ratio

Reading Comfort

~185 CPL

Needs attention

24px

16px

20px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Risky: Text appears on background images without overlay protection.

❌ Very long lines: ~185 chars/line causes eye strain. Use max-width: 65ch.

Buy on MyFonts

Business & Marketing Stack

9 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ssl.p.jwpcdn.com(3)connect.facebook.net(2)googletagmanager.com(2)local(2)scripts.clarity.ms(1)

Website Identity

coindesk.com

Sponsored

Last analyzed: 11 Feb 2026 at 09:15

Historical Analysis & Change Tracking