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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proko.com

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

Export

proko.com

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

16.58.124.255

Server Location

🇺🇸 Dublin, United States

ASN

AS16509

Organization

AWS EC2 (us-east-2)

Server

OpenResty

Nameservers

ns-1828.awsdns-36.co.uk.ns-300.awsdns-37.com.ns-828.awsdns-39.net.ns-1253.awsdns-28.org.

Performance

Page Speed

6 KB

250 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Frameworks

Analytics

CSS Frameworks

Social

Web Servers

Security

SEO Analysis

C68/100

proko.comproko.com

Proko - Learn How to Draw with Fun Tutorials

Learn how to draw people, how to draw faces, figure and portrait drawing videos. Become a better artist through step by step drawing tutorials.

Title Length44 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

323d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

12.12.2025

Valid Until

09.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (4)

proko.com*.prokolab.comprokolab.com*.proko.com

SHA-256 Fingerprint

39:CB:7D:A1:55:1E:E5:F1:04:F8:29:15:62:C7:05:A2:C5:96:28:6C...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Fri, 20 Feb 2026 00:30:54 GMT

proko-correlation-id

2de34b37

server

openresty/1.21.4.1

x-powered-by

Express

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx3.googlemail.com

aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

proko.com

Domain Age

28y 7m

Created

23.07.1997

Expires

22.07.2026

Last Updated

22.07.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Rubik + sans-serif

82/100

Readability

/30

32/40

14px · LH 1.71

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Rubik

Sans28px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

28px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.71 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x 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.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Social Media

ShareThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.proko.com(2)buttons-config.sharethis.com(1)googletagmanager.com(1)platform-api.sharethis.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

Sponsored

Last analyzed: 20 Feb 2026 at 00:31

Historical Analysis & Change Tracking