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

wcrf.org

https://wcrf.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

wcrf.org

Sponsored

Hosting Provider

Kinsta

cloudflare.com

IP Address

162.159.134.42

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns33.domaincontrol.com.ns34.domaincontrol.com.

Performance

Page Speed

1.2 MB

63 requests

Image Optimization

Lazy LoadAVIFResponsiveUploadcare

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.2.13

cms

WCRFv2.0

by Pixeled Eggs

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

13 Technologies Detected

Plugins

Grassblade Kk Star Ratings

Jquery Updater

Hcaptcha For Forms And More

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

CDN

SEO Analysis

A+100/100

wcrf.orgwcrf.org

Homepage | World Cancer Research Fund

At World Cancer Research Fund, we examine how diet, weight and physical activity can affect your risk of developing and surviving cancer.

Title Length37 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Sponsored

A+

Security Score

91%Excellent

Interactive

HTTPS

WAF

45d

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+H3

Valid From

06.01.2026

Valid Until

06.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

wcrf.org*.wcrf.org

SHA-256 Fingerprint

99:B7:4E:7E:AC:FB:04:5D:B3:7B:FF:30:07:B2:15:ED:1F:59:94:04...

Upgrade to view header details

HTTP Headers

Developer Console

age

232

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(public, max-age=0, s-maxage=3600)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0b12e78896d395-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

wcrf-org.mail.protection.outlook.com

Domain Information

wcrf.org

Domain Age

31y 1m

Created

10.01.1995

Expires

09.01.2032

Last Updated

23.02.2025

Registrar

Mesh Digital Limited

DNSSEC

Not Enabled

Privacy & Compliance

Civic Cookie Control

Cookie Consent Banner

Civic Cookie Control

GDPR Indicators

Cookie consent banner detected

CMP: Civic Cookie Control

Data Protection Officer mentioned

Typography & Readability

FSIndustrieCondensedBold + Arial

81/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

18/25

3.89x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

FSIndustrieCondensedBold

Sans70px

Body Font

Arial

Sans18px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

70px

48px

36px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.9x 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.

⚠️ Cramped layout: 46 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

wcrf.org(6)static.fundraiseup.com(6)googletagmanager.com(4)cdn.fundraiseup.com(1)cc.cdn.civiccomputing.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 20 Feb 2026 at 03:56

Historical Analysis & Change Tracking