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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catholic.com

https://catholic.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

catholic.com

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

CDN

Cloudflare

WAF

Cloudflare

Nameservers

isla.ns.cloudflare.com.jeff.ns.cloudflare.com.

Performance

Page Speed

333 KB

75 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Decoupled

Frontend

Framework

Next.js

Styling

Bootstrap

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Vercel

CDN

Cloudflare

Detected API Sources

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

Technology Stack

9 Technologies Detected

Analytics

CSS Frameworks

Meta Frameworks

Icon Libraries

Tag Managers

Platforms

SEO Analysis

C64/100

catholic.comcatholic.com

Catholic Faith, Beliefs, & Prayers | Catholic Answers

Explore the Largest Catholic Database: Beliefs, Practices, Articles, Books, Videos.

Title Length53 chars

Recommended: 50-60 chars

Description Length83 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

76%Good

Static / Informational

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.02.2026

Valid Until

16.05.2026

Subject Alternative Names (1)

www.catholic.com

SHA-256 Fingerprint

04:E4:18:FA:6C:A7:44:82:9A:ED:97:8D:66:89:5D:ED:2F:3F:A5:06...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

2469

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 07:33:22 GMT

etag

W/"11abe-0rA5LRZnRkNAeRbzTCc57soA5dg"

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

catholic-com.mail.protection.outlook.com

Domain Information

catholic.com

Domain Age

30y 8m

Created

13.06.1995

Expires

12.06.2034

Last Updated

22.04.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Termly

Cookie Consent Banner

Termly

GDPR Indicators

Cookie consent banner detected

CMP: Termly

Typography & Readability

Montserrat + sans-serif

88/100

Readability

/30

40/40

18px · LH 1.50

Hierarchy

/20

25/25

2.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Montserrat

Sans48px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

48px

14px

24px

14px

18px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.7x 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

4 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

TermlySMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)googletagmanager.com(3)pi.pardot.com(2)app.termly.io(1)idsod.catholic.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Pinterest

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Last analyzed: 20 Feb 2026 at 08:14

Historical Analysis & Change Tracking