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.

Back to Search

goserver.host

https://goserver.host· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

goserver.host

Sponsored

Hosting Provider

webgo GmbH

IP Address

37.17.224.100

Server Location

🇩🇪 Hamburg, Germany

ASN

AS48324

Organization

webgo GmbH

Server

Nginx

Nameservers

ns3.webgo.de.ns1.webgo.de.ns4.webgo.de.ns2.webgo.de.

Performance

Page Speed

841 KB

30 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

CMS

WooCommerce

Infrastructure

Hosting

webgo GmbH

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Frameworks

CSS Frameworks

Icon Libraries

Analytics

Web Servers

SEO Analysis

B72/100

goserver.hostgoserver.host

Erstellen Sie Ihre Website bei webgo! Webhosting, Server, Domains &...

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Title truncated. Description truncated.

Title Length72 chars

Recommended: 50-60 chars

Description Length163 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

221 URLs

robots.txt

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

263d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.11.2025

Valid Until

09.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.webgo.dewebgo.de

SHA-256 Fingerprint

49:5F:51:90:89:E4:03:90:FD:FE:BB:56:D7:A7:1F:5E:C4:21:5B:8C...

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

date

Thu, 19 Feb 2026 21:45:38 GMT

etag

W/"69978268-7d2b3"

last-modified

Thu, 19 Feb 2026 21:36:40 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mail1.goserver.host

mail2.goserver.host

Domain Information

goserver.host

Domain Age

10y 5m

Created

10.09.2015

Expires

10.09.2026

Last Updated

03.12.2025

Registrar

InterNetX GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

IBM Plex Sans + Source Sans

70/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

15/25

1.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

IBM Plex Sans

Sans16px

Body Font

Source Sans

Sans14px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

16px

56px

26px

14px

Major Sixth

Scale

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

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

scripts.clarity.ms(1)clarity.ms(1)assets.webgo.de(1)webgo.de(1)hcaptcha.com(1)

Website Identity

Facebook Instagram LinkedIn

Sponsored

Last analyzed: 19 Feb 2026 at 21:45

Historical Analysis & Change Tracking