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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geni.us

https://geni.us· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

geni.us

Sponsored

Hosting Provider

Linode (Akamai)

linode.com

IP Address

172.105.69.103

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS63949

Organization

Linode

CDN

Fastly

Nameservers

ns5.geniuslink.com.ns6.geniuslink.com.ns1.geniuslink.com.ns2.geniuslink.com.+2 more

Performance

Page Speed

1 MB

25 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Linode (Akamai)

CDN

Fastly

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

Libraries

UI Components

CSS Frameworks

Analytics

Tag Managers

SEO Analysis

D58/100

geni.usgeni.us

Geniuslink - URL Shortener for Creators and Affiliates

Geniuslink is the world’s most intelligent URL shortener. Create links that dynamically route users to different destinations based off their devices, operat...

Description truncated.

Title Length54 chars

Recommended: 50-60 chars

Description Length204 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (9/17)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

86%Very Good

Static / Informational

HTTPS

No WAF

16d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Certainly

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.02.2026

Valid Until

04.03.2026

Subject Alternative Names (4)

*.geniuslink.comgeniuslink.comhelp.geni.uswww.geni.us

SHA-256 Fingerprint

6A:F1:0C:69:F3:48:4F:C7:1D:B6:38:6A:E3:66:B7:0E:95:24:21:9D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self';

content-type

text/html

date

Mon, 16 Feb 2026 17:39:10 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com

aspmx3.googlemail.com

aspmx2.googlemail.com

alt1.aspmx.l.google.com

+1 more

Domain Information

geni.us

DNSSEC

Not Enabled

Privacy & Compliance

Civic Cookie Control

Cookie Consent Banner

Civic Cookie Control

GDPR Indicators

Cookie consent banner detected

CMP: Civic Cookie Control

Typography & Readability

open sans

61/100

Readability

/30

20/40

11px · LH 1.80

Hierarchy

/20

18/25

3.39x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

open sans

Sans38px

Body Font

Open Sans

Sans11px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

38px

30px

12px

11px

❌ Critical: 11px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.80 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.4x larger than 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)cc.cdn.civiccomputing.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 16 Feb 2026 at 17:39

Historical Analysis & Change Tracking