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

aspca.org

https://aspca.org· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

aspca.org

Mobile

Sponsored

Hosting Provider

Pantheon

pantheon.io

IP Address

23.185.0.2

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

Pantheon

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

auth1.dns.cogentco.com.auth2.dns.cogentco.com.

Performance

Page Speed

1.2 MB

176 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupalv7

Technology Stack

19 Technologies Detected

Advertising

Google Ads Twitter Ads LinkedIn Ads TikTok Pixel Microsoft Advertising Criteo Taboola

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Segment

CSS Frameworks

Libraries

Other

Icon Libraries

Tag Managers

Other

CDN

SEO Analysis

B70/100

aspca.orgaspca.org

ASPCA | American Society for the Prevention of Cruelty to Animals

Learn more about the ASPCA's work to rescue animals from abuse, pass humane laws and share resources with shelters nationwide. Join our fight today!

Title Length65 chars

Recommended: 50-60 chars

Description Length148 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

77 rules

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

57d

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

12.01.2026

Valid Until

12.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.aspca.org

SHA-256 Fingerprint

90:9D:77:F4:61:F3:42:6A:8D:82:AE:9D:B2:61:2D:83:68:4A:DB:08...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🔴 No Cache(no-cache, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cd19c348996d238-FRA

content-encoding

⚡ Brotli(br)

content-language

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mxa-00643b01.gslb.pphosted.com

mxb-00643b01.gslb.pphosted.com

Domain Information

aspca.org

Domain Age

30y 1m

Created

06.01.1996

Expires

05.01.2027

Last Updated

28.12.2025

Registrar

DomainSpot LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

AvantGarde Bold + Helvetica Now Light

56/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

18/25

3.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

AvantGarde Bold

Sans60px

Body Font

Helvetica Now Light

Sans18px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

60px

44px

33px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.3x 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.

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

Buy on MyFonts

Business & Marketing Stack

13 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

TaboolaMid-Market

CriteoEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

A/B Testing & Optimization

OptimizelyEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(5)connect.facebook.net(3)s.pinimg.com(2)static.ads-twitter.com(2)track.sv.rkdms.com(1)

Website Identity

aspca.org

30 years old

DomainSpot LLC

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok

Sponsored

Last analyzed: 13 Feb 2026 at 04:34

Historical Analysis & Change Tracking