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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secureservercdn.net

https://secureservercdn.net· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

secureservercdn.net

Sponsored

Hosting Provider

Sucuri

IP Address

192.124.249.16

Server Location

🇺🇸 Menifee, United States

ASN

AS30148

Organization

Sucuri

Server

Sucuri/Cloudproxy

CDN

Sucuri

WAF

Sucuri

Nameservers

ns39.domaincontrol.com.ns40.domaincontrol.com.

Performance

Page Speed

2 KB

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Sucuri

CDN

Sucuri

Technology Stack

2 Technologies Detected

Fonts

Google Fonts

Security

Sucuri

SEO Analysis

F17/100

secureservercdn.netsecureservercdn.net

No Title Found

No description available for this page.

Title Length0 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing page title - critical for SEO
• Missing meta description - important for click-through rates
• Many images missing alt text (5/5)

9 issues found

Upgrade to view details

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

WAF

34d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Starfield Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.12.2025

Valid Until

26.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

secureservercdn.netwww.secureservercdn.net

SHA-256 Fingerprint

1D:64:70:31:B2:8A:78:5C:95:4C:B6:93:E5:74:1D:D0:C0:61:5E:09...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-type

text/html

date

Fri, 20 Feb 2026 11:30:31 GMT

server

Sucuri/Cloudproxy

x-sucuri-cache

MISS

x-sucuri-id

21012

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

secureservercdn.net

Domain Age

8y 7m

Created

28.06.2017

Expires

28.06.2028

Last Updated

01.07.2023

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Typography & Readability

Open Sans + sans-serif

78/100

Readability

/30

32/40

15px · LH 1.70

Hierarchy

/20

20/25

1.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Open Sans

Sans25px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

25px

15px

Minor Second

Scale

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

✅ Optimal line spacing: 1.70 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and 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.

GGoogle Fonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Sponsored

Last analyzed: 20 Feb 2026 at 11:31

Historical Analysis & Change Tracking