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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rlp.de

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

Export

rlp.de

Mobile

Sponsored

Hosting Provider

Landesbetrieb Daten und Information Rheinland-Pfalz

IP Address

83.243.54.63

Server Location

🇩🇪 Ingelheim, Germany

ASN

AS3320

Organization

Landesbetrieb Daten und Information Rheinland-Pfalz

Server

Nginx

Nameservers

dldi0001.rlp.de.ns03.versatel.de.ns02.versatel.de.

Performance

Page Speed

4.6 MB

58 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

TYPO3

Infrastructure

Hosting

Landesbetrieb Daten und Information Rheinland-Pfalz

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

Web Servers

Nginx

SEO Analysis

C64/100

rlp.derlp.de

rlp.de: Startseite . Internetportal des Landes Rheinland-Pfalz

Miteinander gut leben – Informationen über das Land Rheinland-Pfalz

Title Length62 chars

Recommended: 50-60 chars

Description Length67 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

134d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Deutsche Telekom Security GmbH

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

24.06.2025

Valid Until

28.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.rlp.derlp.de

SHA-256 Fingerprint

01:5E:EF:9D:78:CE:D7:67:2D:E4:AE:3B:CB:00:11:63:32:77:7D:D4...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

accept-ranges

bytes

age

27017

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-language

de-DE

content-length

20205

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (4)

mailmx0001.rlp.de

mailmx0003.rlp.de

mailmx0004.rlp.de

mailmx0002.rlp.de

Domain Information

rlp.de

Last Updated

03.08.2017

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Open Sans

71/100

Readability

/30

40/40

18px · LH 1.67

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Open Sans

Sans

Body Font

Open Sans

Sans18px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

40px

25px

20px

18px

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

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

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

⚠️ Cramped layout: 18 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

rlp.de(4)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 14 Feb 2026 at 03:46

Historical Analysis & Change Tracking