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

screamingfrog.co.uk

https://screamingfrog.co.uk· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

screamingfrog.co.uk

Mobile

Sponsored

Hosting Provider

Kinsta

cloudflare.com

IP Address

104.26.3.186

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

raegan.ns.cloudflare.com.kanye.ns.cloudflare.com.

Performance

Page Speed

3.4 MB

150 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Kinsta

CDN

Cloudflare

Detected API Sources

https://maps.googleapis.com/ma...

Technology Stack

24 Technologies Detected

Plugins

Woocommerce Multi Currency

Woocommerce Gateway Paypal Powered By Braintree

Training Signup Instant Page

Duracelltomi Google Tag Manager

Analytics

Facebook Pixel Microsoft Clarity

Libraries

jQuery

CSS Frameworks

Tailwind CSS

Fonts

Adobe Fonts (Typekit)

Tag Managers

Advertising

CDN

Security

SEO Analysis

A82/100

screamingfrog.co.ukscreamingfrog.co.uk

SEO Agency - Screaming Frog

We run remarkably successful search engine optimisation (SEO) and paid search (PPC) campaigns using a unique blend of data, technology & creativity.

Title Length27 chars

Recommended: 50-60 chars

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (28/38)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

617 URLs

robots.txt

44 rules

Sponsored

Security Score

5%Critical

Critical / Transactional

HTTPS

WAF

88d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.02.2026

Valid Until

13.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

screamingfrog.co.uk*.screamingfrog.co.uk

SHA-256 Fingerprint

77:72:A5:45:CE:49:0E:7D:10:EC:0E:2E:19:7B:11:87:A8:E4:E0:A0...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

71398

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

cf-apo-via

tcache

cf-cache-status

HIT

cf-edge-cache

cache,platform=wordpress

cf-ray🇩🇪 Frankfurt

9cda6b0759c0dc6c-FRA

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

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

Domain Information

screamingfrog.co.uk

Domain Age

18y 11m

Created

22.03.2007

Expires

22.03.2026

Last Updated

15.01.2026

Registrar

One.com A/S

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

museo-sans + sans-serif

62/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

21/25

2.19x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

museo-sans

Sans35px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

35px

16px

22px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

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

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

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

screamingfrog.co.uk(8)google-analytics.com(2)connect.facebook.net(2)googletagmanager.com(2)gstatic.com(1)

Website Identity

screamingfrog.co.uk

18 years old

One.com A/S📧 Microsoft 365

Social Profiles

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 14 Feb 2026 at 06:13

Historical Analysis & Change Tracking