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.

Back to Search

sky.com

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

Export

sky.com

Mobile

Sponsored

Hosting Provider

Sky UK Limited

IP Address

90.216.128.5

Server Location

🇬🇧 Isleworth, United Kingdom

ASN

AS5607

Organization

Sky UK Limited

Server

Google Frontend

Nameservers

edns1.ultradns.com.edns1.ultradns.net.edns1.ultradns.org.ns0.isp.sky.com.+2 more

Performance

Page Speed

1004 KB

93 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Sky UK Limited

Detected API Sources

https://lptag.liveperson.net/l...

Technology Stack

7 Technologies Detected

Frameworks

Meta Frameworks

CSS Frameworks

Tag Managers

Other

Languages

Customer Support

Zendesk

SEO Analysis

B76/100

sky.comsky.com

Discover TV, Broadband & Mobile Phone Packages with Sky

Discover Sky packages for TV, broadband & mobile including Glass - the new streaming TV with Sky Inside. Login to manage your My Sky account & more.

Title Length55 chars

Recommended: 50-60 chars

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (12/18)

3 issues found

Upgrade to view details

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

296d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

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

content-encoding

📦 Gzip(gzip)

content-length

46585

content-security-policy

default-src 'none'; script-src 'self' 'unsafe-eval' 'unsafe...

content-type

text/html; charset=utf-8

date

Wed, 11 Feb 2026 01:51:31 GMT

Good Warning Issue

Typography & Readability

Sky Headline + sans-serif

79/100

Readability

/30

40/40

18px · LH 1.56

Hierarchy

/20

18/25

3.11x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Sky Headline

Sans56px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

56px

18px

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

✅ Optimal line spacing: 1.56 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

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

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(16)sky.com(2)cdn.branch.io(1)assets.sky.com(1)

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Last analyzed: 11 Feb 2026 at 01:51

Historical Analysis & Change Tracking