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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joinhandshake.com

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

Export

joinhandshake.com

Mobile

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

reza.ns.cloudflare.com.piers.ns.cloudflare.com.

Performance

Page Speed

8.2 MB

131 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Hosting

Vercel

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

12 Technologies Detected

Analytics

Meta Frameworks

Other

CSS Frameworks

Tag Managers

Customer Support

Platforms

SEO Analysis

A82/100

joinhandshake.comjoinhandshake.com

Handshake: the career network for the AI economy

The largest expert network for learning, earning, and growing careers in the AI economy, giving everyone an accessible first step into an AI-powered career.

Title Length48 chars

Recommended: 50-60 chars

Description Length156 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

robots.txt

94 rules

Sitemap reference found

Allows all crawlers

Sponsored

A+

Security Score

91%Excellent

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

14.02.2026

Valid Until

15.05.2026

Subject Alternative Names (2)

joinhandshake.comwww.joinhandshake.com

SHA-256 Fingerprint

AE:7A:EE:35:41:C3:63:EE:DC:95:BE:DD:D6:AE:72:1B:12:C9:1E:D3...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

age

16720

cache-control

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

content-disposition

inline

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' dashboard.skilljar.com *.joinhandshak...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxb-0063cf01.gslb.pphosted.com

mxa-0063cf01.gslb.pphosted.com

Domain Information

joinhandshake.com

Domain Age

12 years

Created

16.02.2014

Expires

16.02.2034

Last Updated

24.06.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

NoiGrotesk

69/100

Readability

/30

40/40

16px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

NoiGrotesk

Sans

Body Font

NoiGrotesk

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

56px

28px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 36 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

KameleoonEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)global.ketchcdn.com(1)

Website Identity

Instagram LinkedIn TikTok

Sponsored

Last analyzed: 20 Feb 2026 at 04:04

Historical Analysis & Change Tracking