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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dhm.de

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

Export

dhm.de

Sponsored

Hosting Provider

Stiftung Deutsches Historisches Museum, Berlin

IP Address

194.94.40.10

Server Location

🇩🇪 Heidelberg, Germany

ASN

AS680

Organization

Stiftung Deutsches Historisches Museum, Berlin

Server

Apache

Nameservers

srvns03.dhm.de.srvns04.dhm.de.dns-2.dfn.de.srvns01.dhm.de.+2 more

Performance

Page Speed

2.1 MB

29 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

3 Technologies Detected

Libraries

jQueryv1.11.3

CSS Frameworks

Tailwind CSS

Web Servers

Apachev2.4.65

SEO Analysis

B74/100

dhm.dedhm.de

Deutsches Historisches Museum

Das Deutsche Historische Museum in Berlin ist Deutschlands nationales Geschichtsmuseum und eines der größten Geschichtsmuseen der Welt. Der Zugang ist barrie...

Description truncated.

Title Length29 chars

Recommended: 50-60 chars

Description Length164 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

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Crawlability

Sitemap

Type: index

5 URLs

robots.txt

15 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Static / Informational

HTTPS

No WAF

297d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

12.12.2025

Valid Until

12.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

www.dhm.dewww.www.dhm.dem.dhm.dewww.m.dhm.dedhm.de

SHA-256 Fingerprint

56:81:98:AD:9C:3F:A1:E3:BA:1F:2C:8F:1A:0A:AA:F4:C4:EB:8A:46...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-store)

content-encoding

📦 Gzip(gzip)

content-language

de-DE

content-length

15511

content-type

text/html; charset=utf-8

date

Wed, 18 Feb 2026 08:12:24 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

a1761.mx.srv.dfn.de

b1761.mx.srv.dfn.de

c1761.mx.srv.dfn.de

Domain Information

dhm.de

Last Updated

19.09.2023

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Pluto Sans

80/100

Readability

/30

32/40

18px · LH 1.22

Hierarchy

/20

25/25

3.33x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Pluto Sans

Sans60px

Body Font

Pluto Sans

Sans18px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

60px

25px

30px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.3x 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.

⚠️ Cramped layout: 90 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)

Website Identity

Facebook Instagram LinkedIn YouTube

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Last analyzed: 18 Feb 2026 at 08:12

Historical Analysis & Change Tracking