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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sachsen.de

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

Export

sachsen.de

Mobile

Sponsored

Hosting Provider

SID SVN

IP Address

31.12.58.19

Server Location

🇩🇪 Dresden, Germany

ASN

AS61352

Organization

SID SVN

Server

Apache

Nameservers

secondary006.dtag.net.S2VG300NS03.pzd-svn.de.S2VG300NS02.pzd-svn.de.pns.dtag.de.

Performance

Page Speed

2.1 MB

82 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

SID SVN

Technology Stack

3 Technologies Detected

Libraries

jQuery

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

C68/100

sachsen.desachsen.de

Startseite - sachsen.de

Offizielle Website des Freistaates Sachsen mit Informationen zu u.a. Bürgern und Freistaat, Wirtschaft, Umwelt, Bildung, Wissen, Kultur und Freizeit.

Title Length23 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (33/64)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

71%Good

Interactive

HTTPS

No WAF

27d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

SwissSign AG

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.03.2025

Valid Until

13.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

sachsen.deesf.sachsen.deextranet.strukturfonds.sachsen.defachkraefte.sachsen.defoerderung.smwa.sachsen.dehandwerk.sachsen.deindustrie.sachsen.deinnovation.sachsen.de+12 more

SHA-256 Fingerprint

77:32:56:72:D8:E4:7F:30:31:A4:E3:D9:F1:64:22:AD:28:FD:02:11...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

15631

content-security-policy

default-src 'self'; frame-ancestors 'self' https://*.sachsen...

content-type

text/html; charset=UTF-8

date

Sat, 14 Feb 2026 02:31:15 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

s2vg300mr01.pzd-svn.de

s2vg300mr02.pzd-svn.de

Domain Information

sachsen.de

Last Updated

14.01.2026

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

RotisSansSerifW01-Bold

70/100

Readability

/30

32/40

14px · LH 1.65

Hierarchy

/20

11/25

1.36x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

RotisSansSerifW01-Bold

Sans19px

Body Font

RotisSansSerifW01-Bold

Sans14px

Contrast Ratio

Reading Comfort

~65 CPL

Optimal (45–75)

19px

25px

19px

15px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.65 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ 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

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

styleguide.sachsen.de(4)code.etracker.com(2)etracker.de(1)

Website Identity

Facebook X (Twitter)

Sponsored

Last analyzed: 14 Feb 2026 at 02:31

Historical Analysis & Change Tracking