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

bupa.co.uk

https://bupa.co.uk· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

bupa.co.uk

Sponsored

Hosting Provider

Btnet

IP Address

213.121.86.72

Server Location

🇬🇧 Clerkenwell, United Kingdom

ASN

AS2856

Organization

Btnet

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns3-37.azure-dns.org.ns4-37.azure-dns.info.ns1-37.azure-dns.com.ns2-37.azure-dns.net.

Performance

Page Speed

1.2 MB

73 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Btnet

CDN

Cloudflare

Technology Stack

9 Technologies Detected

CSS Frameworks

Libraries

Fonts

Advertising

Other

Reviews

CDN

SEO Analysis

B78/100

bupa.co.ukbupa.co.uk

Private healthcare | Bupa UK

Bupa are one of the UK's leading healthcare specialists. Get information on private medical insurance, health clinics and care homes from experts you can trust.

Title Length28 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (34/59)

2 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Sponsored

Security Score

30%Critical

Critical / Transactional

HTTPS

WAF

368d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

20.01.2026

Valid Until

21.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (5)

bupa.co.ukintermediaries.bupa.co.ukaccount.bupa.co.ukcareservices.bupa.co.ukwww.bupa.co.uk

SHA-256 Fingerprint

DC:52:5E:EB:C6:F9:0F:70:DD:B8:06:0A:71:EB:C2:6C:55:D0:06:9E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Wed, 18 Feb 2026 04:38:47 GMT

content-type

text/html; charset=utf-8

content-encoding

⚡ Brotli(br)

cache-control

🟡 1800s(private, must-revalidate, max-age=1800)

set-cookie

shell#lang

x-frame-options

SAMEORIGIN

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

bupa-co-uk.mail.protection.outlook.com

Domain Information

bupa.co.uk

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Montserrat2022 + Arial

51/100

Readability

/30

12/40

13px · LH 1.38

Hierarchy

/20

25/25

4.31x ratio

WCAG

/25

11/15

Contrast: undefined

Performance

/25

10/20

4 fonts

Heading Font

Montserrat2022

Sans56px

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

~65 CPL

Optimal (45–75)

56px

32px

21px

14px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Strong hierarchy: Headlines are 4.3x larger than body text.

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

✅ Optimal line length: ~65 characters per line is comfortable to read.

⚠️ Cramped layout: 9 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)tags.tiqcdn.com(3)cdn.cookielaw.org(3)analytics.silktide.com(1)widget.trustpilot.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

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Last analyzed: 18 Feb 2026 at 04:39

Historical Analysis & Change Tracking