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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.

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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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aargauerzeitung.ch

https://aargauerzeitung.ch· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

aargauerzeitung.ch

Mobile

Sponsored

Hosting Provider

CH Regionalmedien AG

IP Address

213.146.25.42

Site Location

🇨🇭 Switzerlandvia tld

Server Location

🇨🇭 Aarau, Switzerland

ASN

AS16267

Organization

CH Regionalmedien AG

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

blue.foundationdns.com.blue.foundationdns.net.blue.foundationdns.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

598 ms10%

Speed Index

777 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

100 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

CH Regionalmedien AG

CDN

Cloudflare

Technology Stack

5 Technologies Detected

Frameworks

CSS Frameworks

Advertising

CDN

SEO Analysis

B73/100

Meta Tags14/15

Content10/12

Headings3/8

Technical23/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile3/4

Indexability3/3

aargauerzeitung.chaargauerzeitung.ch

Aargauer Zeitung | Nachrichten für den Aargau – AZ

Das regionale Portal. Rund um die Uhr Nachrichten aus der Region, zu Sport, Politik, Wirtschaft und Unterhaltung.

Title Length50 chars

Recommended: 50-60 chars (~303px / 580px)

Description Length113 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (95/101) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

105 URLs

105 sub-sitemaps

robots.txt

76 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100

Poor

3 13 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F29/100

Bot Access

10/25

Machine Read.

3/25

Schema Data

2/25

Citation

14/25

AI Bot Access

4/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:2%

Words:4,185

Token eff.:Poor Structure

Sections/1K:0.2

Structured Data

2 JSON-LD

BreadcrumbList

sameAs entity links

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 12.5w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

61/100

Passed

Critical

Warnings

Images & Alt Text

5/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

49/100

173 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

197 mg

Returning (cached)

99 mg

Annual (10K/mo)

20.7 kg

Emission Segments

Data Center

39 mg

Network

41 mg

Device

93 mg

Resource Breakdown

JavaScript

752.8 KB

Images

9.7 KB

CSS

32.2 KB

Fonts

404.7 KB

HTML

189.9 KB

Other

6.6 KB

Green Hosting Not Verified

CH Regionalmedien AG

5 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

41%Poor

Interactive

HTTPS

WAF

68d

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

04.04.2026

Valid Until

03.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

aargauerzeitung.ch*.aargauerzeitung.ch

SHA-256 Fingerprint

96:6A:AF:3D:DE:2F:C1:0C:E2:3F:A9:45:E9:8D:B1:0B:71:69:55:16...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

232

cache-control

🟡 15s(public, max-age=15)

cf-cache-status

HIT

cf-ray🇫🇷 Paris

9f1f22a35c54482b-CDG

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

aargauerzeitung-ch.mail.protection.outlook.com

Domain Information

aargauerzeitung.ch

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

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

77/100

Mobile Friendly7 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

chm-sans-serif-condensed + chm-sans-serif

WCAG Partial

55/100

Readability

/30

17/30

18px · LH 1.20

Hierarchy

/20

8/20

WCAG

/25

18/25

1.18:1 min contrast

Performance

/25

12/25

3 fonts · 9 req

Heading Font

chm-sans-serif-condensed

Sans

Body Font

chm-sans-serif

Sans18px

Contrast Ratio

1.18:1

2 issues

Reading Comfort

~45 CPL

Optimal (45–75)

36px

32px

18px

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

⚠️ Tight line spacing (1.20). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.2:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

Buy on MyFontsFlesch 0

Color Palette

6 unique colors

11.73:1 AAA Dark

#383838

Text· 44.8%

#ffffff

Background· 22.1%

#0f0d10

Primary· 9.9%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

KameleoonEnterprise

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

(10)unpkg.com(2)static.cleverpush.com(1)nfpzc9twuf.kameleoon.eu(1)static.data.chmedia.ch(1)

Website Identity

Aargauer Zeitung

NewsMediaOrganization

www.aargauerzeitung.ch/

Location detected: 🇨🇭 Switzerlandvia tld

📧 Microsoft 365deEst. 1996

Social Profiles

Facebook Instagram

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Last analyzed: 25 Apr 2026 at 17:41

Historical Analysis & Change Tracking