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

ebay-kleinanzeigen.de

https://ebay-kleinanzeigen.de· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.127.0.23

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

CDN

Akamai

WAF

Akamai

Nameservers

ns-cloud-c1.googledomains.com.ns-cloud-c3.googledomains.com.ns-cloud-c2.googledomains.com.ns-cloud-c4.googledomains.com.

Performance

Page Speed

1016 KB

119 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Astro

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Akamai

Progressive Web App

Web ManifestApple Touch Icon

Detected API Sources

https://img.kleinanzeigen.de/a...

Technology Stack

9 Technologies Detected

Advertising

Google Ads Google AdSense Criteo

Analytics

Meta Frameworks

Other

CSS Frameworks

Tag Managers

SEO Analysis

C64/100

ebay-kleinanzeigen.deebay-kleinanzeigen.de

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Kostenlose Anzeigen aufgeben mit Kleinanzeigen. Gebraucht oder Neu, Privat oder Gewerbe - Jetzt gratis inserieren auf Deutschlands meistbesuchtem Kleinanzeig...

Title truncated. Description truncated.

Title Length87 chars

Recommended: 50-60 chars

Description Length211 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (23/40)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

183 URLs

robots.txt

308 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

61%Fair

Interactive

HTTPS

WAF

160d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.10.2025

Valid Until

27.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (19)

kleinanzeigen.deads.kleinanzeigen.deadvertising.kleinanzeigen.deauth.kleinanzeigen.deautocomplete.kleinanzeigen.declicks.kleinanzeigen.dedeveloper.kleinanzeigen.dedl.kleinanzeigen-user-content.de+11 more

SHA-256 Fingerprint

74:17:76:BD:C4:99:D2:AE:B5:BF:A5:8A:7E:F8:9F:EC:04:D8:5E:86...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

36726

content-type

text/html

date

Tue, 17 Feb 2026 03:03:08 GMT

strict-transport-security

max-age=31536000; includeSubDomains

vary

User-Agent, Accept-Encoding

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

ebay-kleinanzeigen.de

Last Updated

27.10.2021

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Helvetica Neue

68/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica Neue

Sans14px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

14px

18px

14px

Minor Second

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

⚠️ Cramped layout: 107 elements lack adequate spacing.

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

A/B Testing & Optimization

KameleoonEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kleinanzeigen.de(10)local(8)server.sgtm-legacy.kleinanzeigen.de(2)

Website Identity

ebay-kleinanzeigen.de

📧 Google Workspace

Social Profiles

Facebook Instagram TikTok Threads

Sponsored

Last analyzed: 17 Feb 2026 at 03:03

Historical Analysis & Change Tracking