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

rarediseases.org

https://rarediseases.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

rarediseases.org

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.72.123

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

mia.ns.cloudflare.com.walt.ns.cloudflare.com.

Performance

Page Speed

6.6 MB

129 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Detected API Sources

https://giving.classy.org/embe...

Technology Stack

35 Technologies Detected

Plugins

Cookie Law Info Events Calendar Pro Activecampaign Subscription Forms Popup Maker Nord Community Wall Nord State Report Card Nord Telemedicine Resources Nord Timeline Responsive Lightbox Sassy Social Share Gravityformsadvancedpostcreation

Gravity Forms

Ubermenu Wp Paginate

WPML

The Events Calendar Nord Donation Popup

Libraries

Underscore.js Lightbox

Analytics

CSS Frameworks

UI Components

Icon Libraries

Fonts

Tag Managers

CDN

Security

SEO Analysis

A82/100

rarediseases.orgrarediseases.org

National Organization for Rare Disorders | NORD

NORD is dedicated to supporting education, elevating care, advancing research, and driving policy for rare diseases

Title Length47 chars

Recommended: 50-60 chars

Description Length115 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Sponsored

Security Score

51%Poor

Interactive

HTTPS

WAF

50d

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

08.01.2026

Valid Until

08.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

rarediseases.org

SHA-256 Fingerprint

7D:9A:6E:D5:17:C4:36:E3:22:1E:C4:D7:F3:33:CC:94:84:77:6A:A7...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

nel

{"report_to":"cf-nel", "success_fraction":0.0, "max_age":604...

content-encoding

⚡ Brotli(br)

date

Mon, 16 Feb 2026 17:43:23 GMT

content-type

text/html; charset=UTF-8

priority

u=0, i

cf-ray🇩🇪 Frankfurt

9ceed8d1cd41fc94-FRA

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

rarediseases-org.mail.protection.outlook.com

Domain Information

rarediseases.org

Domain Age

27y 8m

Created

02.06.1998

Expires

01.06.2026

Last Updated

05.06.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

Privacy & Compliance

CookieYes

Cookie Consent Banner

CookieYes

GDPR Indicators

Cookie consent banner detected

CMP: CookieYes

Data Protection Officer mentioned

Typography & Readability

Figtree + sans-serif

51/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

18/25

3.11x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Figtree

Sans56px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~54 CPL

Optimal (45–75)

56px

28px

20px

26px

18px

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

✅ Strong hierarchy: Headlines are 3.1x 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.

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

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

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookieYesSMB

GDPR Cookie ConsentFree

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

rarediseases.org(14)googletagmanager.com(2)cdn-cookieyes.com(2)diffuser-cdn.app-us1.com(1)google-analytics.com(1)

Website Identity

rarediseases.org

27 years old

Tucows Domains Inc.📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 16 Feb 2026 at 17:43

Historical Analysis & Change Tracking