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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classy.org

https://classy.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

classy.org

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.197.95

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Nginx

CDN

CloudFront

Nameservers

elsa.ns.cloudflare.com.eric.ns.cloudflare.com.

Performance

Page Speed

3.3 MB

173 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

classy_giv_tueCustom

Technology Stack

20 Technologies Detected

Plugins

Embedpress Svg Support Search Filter Pro Wp Sort Order

Analytics

Facebook Pixel Crazy Egg FullStory

Advertising

Google Ads LinkedIn Ads Microsoft Advertising

Libraries

CSS Frameworks

Tag Managers

Other

Web Servers

SEO Analysis

A82/100

classy.orgclassy.org

GoFundMe Pro | Nonprofit Online Fundraising Platform

GoFundMe Pro is the next evolution in nonprofit fundraising, combining Classy’s powerful software with GoFundMe’s scale and intelligence.

Title Length52 chars

Recommended: 50-60 chars

Description Length137 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (68/70)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

8 rules

Sitemap reference found

Sponsored

Security Score

25%Critical

Critical / Transactional

HTTPS

No WAF

218d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.08.2025

Valid Until

23.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.gofundme.comgofundme.com

SHA-256 Fingerprint

0A:A4:E0:D3:A1:2F:2C:E0:14:A2:6C:7D:AD:C9:1A:03:90:27:AC:12...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 20:55:56 GMT

link

<https://pro.gofundme.com/wp-json/>; rel="https://api.w.org/...

referrer-policy

strict-origin-when-cross-origin

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt2.aspmx.l.google.com

aspmx3.googlemail.com

alt1.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

classy.org

Domain Age

22y 9m

Created

22.05.2003

Expires

22.05.2026

Last Updated

27.04.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

consentmanager

Cookie Consent Banner

consentmanager

GDPR Indicators

Cookie consent banner detected

CMP: consentmanager

Data Protection Officer mentioned

Typography & Readability

GoFundMe Sans + sans-serif

63/100

Readability

/30

17/40

15px · LH 1.10

Hierarchy

/20

25/25

5.47x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

GoFundMe Sans

Sans82px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

82px

64px

32px

20px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

⚠️ Tight line spacing (1.10). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 5.5x larger than body text.

✅ Good performance: Using 2 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.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Crazy EggSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Reddit PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pro.gofundme.com(6)googletagmanager.com(4)script.crazyegg.com(2)connect.facebook.net(2)transcend-cdn.com(2)

Website Identity

classy.org

22 years old

Cloudflare, Inc.📧 Google Workspace

Social Profiles

Facebook Instagram LinkedIn

Sponsored

Last analyzed: 17 Feb 2026 at 20:56

Historical Analysis & Change Tracking