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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lookfantastic.com

https://lookfantastic.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

lookfantastic.com

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.37.91

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS54113

Organization

Fastly, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns04.thg-ns.net.dns1.p05.nsone.net.dns2.p05.nsone.net.dns3.p05.nsone.net.+4 more

Performance

Page Speed

4.5 MB

250 requests

Image Optimization

Lazy LoadResponsiveCloudinary

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Fastly, Inc.

CDN

Cloudflare

Detected API Sources

//cdn-eu.dynamicyield.com/api/...

Technology Stack

25 Technologies Detected

Advertising

Google Ads Google AdSense Twitter Ads Pinterest Tag TikTok Pixel Snapchat Pixel Microsoft Advertising Criteo

Analytics

CSS Frameworks

Payments

Meta Frameworks

Fonts

Tag Managers

Other

Reviews

Personalization

CDN

Security

SEO Analysis

C67/100

lookfantastic.comlookfantastic.com

LOOKFANTASTIC - Beauty, Fragrances, Skincare & Haircare

The home of iconic beauty! Discover over 660 premium & luxury skincare, haircare, makeup & fragrance brands. Join Beauty+ Rewards. Free delivery over £25.

Title Length55 chars

Recommended: 50-60 chars

Description Length154 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (61/103)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

253 rules

Sitemap reference found

Sponsored

Security Score

30%Critical

Critical / Transactional

HTTPS

WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.01.2026

Valid Until

24.04.2026

Subject Alternative Names (1)

www.lookfantastic.com

SHA-256 Fingerprint

10:46:04:27:AC:AD:0E:56:6A:CF:50:37:E4:78:45:DA:B8:1C:71:A8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

🟡 0s(max-age=0, s-maxage=900 stale-while-revalidate=300, stale-if...)

cf-ray🇬🇧 London

9d0a47c1efb398f3-LHR

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

eu-smtp-inbound-1.mimecast.com

eu-smtp-inbound-2.mimecast.com

Domain Information

lookfantastic.com

Domain Age

28 years

Created

28.01.1998

Expires

27.01.2030

Last Updated

20.06.2025

Registrar

Key-Systems GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Beaufort Pro Regular + Figtree

69/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Beaufort Pro Regular

Sans

Body Font

Figtree

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

24px

18px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

⚠️ Cramped layout: 23 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

10 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

ContentsquareEnterprise

User behavior and product analytics

Advertising

TikTok PixelMid-Market

Microsoft AdsEnterprise

Facebook PixelMid-Market

Pinterest AdsMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

Dynamic YieldEnterprise

Experimentation and conversion optimization

Reviews & Social Proof

BazaarvoiceEnterprise

Customer reviews and testimonials

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bat.bing.com(17)analytics.tiktok.com(2)s.pinimg.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok Pinterest

Sponsored

Last analyzed: 20 Feb 2026 at 01:38

Historical Analysis & Change Tracking