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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hannover.de

https://hannover.de· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

hannover.de

Sponsored

Hosting Provider

Hannover.de Internet GmbH

IP Address

83.246.85.162

Server Location

🇩🇪 Hanover, Germany

ASN

AS24679

Organization

Hannover.de Internet GmbH

Nameservers

pns01.dcsix.net.pns02.dcsix.net.

Performance

Page Speed

3.2 MB

59 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hannover.de Internet GmbH

Technology Stack

4 Technologies Detected

Other

CSS Frameworks

Analytics

Customer Support

SEO Analysis

A82/100

hannover.dehannover.de

HANNOVER.DE - Portal der Landeshauptstadt und der Region Hannover

Offizielles Portal für Bürger, Tourismus und Wirtschaft mit Informationen zu Leben, Arbeiten, Einkaufen, Kultur, Veranstaltungen und Wissenschaft

Title Length65 chars

Recommended: 50-60 chars

Description Length145 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

46 URLs

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

67d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

ZeroSSL

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

28.01.2026

Valid Until

28.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

hannover.de*.hannover.de

SHA-256 Fingerprint

AC:47:3E:64:37:F8:CC:33:60:44:0D:76:C8:A9:E0:39:C7:9E:53:C6...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

1731

cache-control

🔵 Public(public, s-maxage=600, stale-while-revalidate=300, stale-if-e...)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 11:15:41 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mx12d.antispameurope.com

mx12a.antispameurope.com

mx12c.antispameurope.com

mx12b.antispameurope.com

Domain Information

hannover.de

Last Updated

06.09.2019

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer mentioned

Typography & Readability

Noto-Sans-Display-SemiBold + Noto-Sans-Display-Regular

79/100

Readability

/30

40/40

16px · LH 1.60

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Noto-Sans-Display-SemiBold

Sans32px

Body Font

Noto-Sans-Display-Regular

Sans16px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

32px

20px

24px

16px

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x 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

3 Tools Detected

Advanced

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)matomo.hannover.de(1)static.rndtech.de(1)cmp-sp.hannover.de(1).hannover.de(1)

Website Identity

Facebook X (Twitter)

Sponsored

Last analyzed: 20 Feb 2026 at 11:44

Historical Analysis & Change Tracking