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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bremen.de

https://bremen.de· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

bremen.de

Sponsored

Hosting Provider

ANX

IP Address

185.228.148.8

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS42473

Organization

ANX

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns.inwx.de.ns3.inwx.eu.ns2.inwx.de.

Performance

Page Speed

1.2 MB

55 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

ANX

CDN

Cloudflare

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

CDN

SEO Analysis

A80/100

bremen.debremen.de

Bremen - Informationen, Veranstaltungen, Tipps & mehr

Wir präsentieren euch aktuelle Termine, Veranstaltungen, Sehenswürdigkeiten, Kleinanzeigen & Wissenswertes aus Bremen

Title Length53 chars

Recommended: 50-60 chars

Description Length117 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Security Score

51%Poor

Interactive

HTTPS

WAF

85d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.02.2026

Valid Until

13.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.bremen.de

SHA-256 Fingerprint

61:F8:EF:B3:AF:87:64:C8:CC:EE:F6:62:8E:B1:C7:35:34:43:02:65...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

date

Tue, 17 Feb 2026 03:27:31 GMT

content-type

text/html; charset=utf-8

server

cloudflare

cache-control

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

access-control-allow-origin

access-control-allow-methods

GET, POST, PUT, DELETE, OPTIONS

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.cleanmail.eu

Domain Information

bremen.de

Last Updated

10.10.2023

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Open Sans + sans-serif

87/100

Readability

/30

32/40

15px · LH 1.60

Hierarchy

/20

25/25

2.16x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Open Sans

Sans32px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

~76 CPL

Optimal (45–75)

32px

18px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

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

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)tp.bremen.de(2)consent.cookiebot.com(2)googletagmanager.com(1)matomo.wfb-bremen.de(1)

Website Identity

Facebook Instagram YouTube TikTok

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Last analyzed: 17 Feb 2026 at 03:27

Historical Analysis & Change Tracking