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

giz.de

https://giz.de· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

giz.de

Mobile

Sponsored

Hosting Provider

Hetzner

hetzner.com

IP Address

116.202.5.13

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner Online GmbH

Server

Nginx

Nameservers

AUTH52.NS.DE.UU.NET.AUTH02.NS.DE.UU.NET.

Performance

Page Speed

5.8 MB

50 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

6 Technologies Detected

Libraries

Other

Other

CSS Frameworks

Analytics

Web Servers

SEO Analysis

A80/100

giz.degiz.de

Startseite | GIZ

Die GIZ arbeitet weltweit für nachhaltige Entwicklung. Erfahren Sie, wie wir Lösungen gestalten und Partnerländer unterstützen.

Title Length16 chars

Recommended: 50-60 chars

Description Length127 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7,134 URLs

robots.txt

53 rules

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

284d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.11.2025

Valid Until

25.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.giz.degiz.de

SHA-256 Fingerprint

1A:6C:02:18:9D:5C:34:2A:DA:73:6D:C9:A1:20:6C:03:60:91:CF:B8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

24526

cache-control

🟡 600s(max-age=600, public)

content-encoding

📦 Gzip(gzip)

content-language

content-security-policy

default-src * 'unsafe-inline' 'unsafe-eval' data: blob:; obj...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

giz-de.mail.protection.outlook.com

Domain Information

giz.de

Last Updated

24.08.2020

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Gravur Condensed + Noto

81/100

Readability

/30

40/40

28px · LH 1.43

Hierarchy

/20

18/25

2.86x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Gravur Condensed

Sans80px

Body Font

Noto

Sans28px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

80px

48px

24px

28px

✅ Excellent readability: 28px body text is ideal for all devices.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

✅ 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

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)giz.de(1)

Website Identity

LinkedIn YouTube Bluesky

Sponsored

Last analyzed: 14 Feb 2026 at 06:04

Historical Analysis & Change Tracking