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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greenpeace.de

https://greenpeace.de· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

greenpeace.de

Sponsored

Hosting Provider

Adacor Hosting GmbH

IP Address

46.167.162.20

Server Location

🇩🇪 Offenbach, Germany

ASN

AS42442

Organization

Adacor Hosting GmbH

Nameservers

ns0.de.colt.net.ns8.colt.net.

Performance

Page Speed

1.1 MB

24 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

6 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Analytics

Tag Managers

Other

SEO Analysis

A+94/100

greenpeace.degreenpeace.de

Greenpeace – im Einsatz für den Umweltschutz

Greenpeace Deutschland setzt sich für Klimaschutz, Artenvielfalt und Frieden ein. Jetzt informieren und mitmachen!

Title Length44 chars

Recommended: 50-60 chars

Description Length114 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

13 URLs

robots.txt

34 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

48d

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

07.01.2026

Valid Until

07.04.2026

Subject Alternative Names (6)

act.greenpeace.deco2-schulrechner.greenpeace.decounter.greenpeace.deengage.greenpeace.degruppenkram.greenpeace.dewww.greenpeace.de

SHA-256 Fingerprint

09:A9:65:82:11:6E:72:43:7B:3C:27:32:D4:8C:0B:FC:E7:01:FC:01...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

akamai-grn

0.aff01502.1771399085.2eaca754

cache-control

🔴 No Cache(max-age=0, no-cache, no-store)

content-encoding

📦 Gzip(gzip)

content-language

content-length

31297

content-security-policy

default-src * data:; script-src https: 'unsafe-inline' 'unsa...

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

ALT4.ASPMX.L.GOOGLE.COM

ASPMX.L.GOOGLE.COM

ALT3.ASPMX.L.GOOGLE.COM

ALT1.ASPMX.L.GOOGLE.COM

+1 more

Domain Information

greenpeace.de

Last Updated

15.09.2013

DNSSEC

Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner

Usercentrics

GDPR Indicators

Cookie consent banner detected

CMP: Usercentrics

Data Protection Officer mentioned

Typography & Readability

Work Sans

88/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

3.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Work Sans

Sans56px

Body Font

Work Sans

Sans16px

Contrast Ratio

Reading Comfort

~45 CPL

Optimal (45–75)

56px

48px

40px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.5x 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.

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

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

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

app.usercentrics.eu(2)local(2)

Website Identity

Facebook Instagram LinkedIn YouTube

Sponsored

Last analyzed: 18 Feb 2026 at 07:18

Historical Analysis & Change Tracking