astroviewer.net

https://astroviewer.net· First analyzed 13 May 2026· Updated 13 May 2026

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astroviewer.net

Mobile

Sponsored

Hosting Provider

STRATO

strato.de

IP Address

81.169.145.84

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Berlin, Germany

ASN

AS6724

Organization

Strato AG

Server

Apache

Nameservers

docks01.rzone.de.shades13.rzone.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

357 ms10%

Speed Index

464 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

40 KB

10 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

STRATO

Technology Stack

2 Technologies Detected

Web Servers

Apachev2.4.66

Languages

PHPv8.2.30

SEO Analysis

D50/100

Meta Tags4/15

Content5/12

Headings4/8

Technical16/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

astroviewer.netastroviewer.net

AstroViewer.net

No description available for this page.

Title Length15 chars

Recommended: 50-60 chars (~91px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

7 URLs

robots.txt

1 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

5/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

F35/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

5/25

AI Bot Access

14/14 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

navheader/footer

Text ratio:26%

Words:105

Token eff.:Too Short

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary23w

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (7)

AI readiness recommendation preview...

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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.

78/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

18/20

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

1/15

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

1 recommendation

•Accessibility recommendation preview...

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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.

67/100

A+

4 mg

CO₂e / view

39.7 KB

Page Weight

95%

Cleaner Than

New Visitor

5 mg

Returning (cached)

2 mg

Annual (10K/mo)

480 g

Emission Segments

Data Center

<0.001 g

Network

1 mg

Device

3 mg

Resource Breakdown

JavaScript

2.0 KB

Images

25.2 KB

CSS

8.8 KB

HTML

3.0 KB

Other

604 B

Green Hosting Verified

STRATO

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

261d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

29.01.2026

Valid Until

29.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

astroviewer.netwww.astroviewer.net

SHA-256 Fingerprint

12:48:33:D3:A1:B0:3E:F9:79:F4:D4:E6:A3:D1:61:3B:11:AB:54:8A...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

date

Wed, 13 May 2026 03:23:11 GMT

server

Apache/2.4.66 (Unix)

vary

User-Agent

x-powered-by

PHP/8.2.30

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

smtpin.rzone.de

Domain Information

astroviewer.net

Domain Age

20y 5m

Created

29.11.2005

Expires

29.11.2026

Last Updated

30.11.2025

Registrar

Cronon GmbH

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

52/100

Mobile Friendly1 breakpoint

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, initial-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

monospace + sans-serif

WCAG Partial

67/100

Readability

/30

21/30

16px · LH 1.15

Hierarchy

/20

13/20

1.62x ratio

WCAG

/25

19/25

2.43:1 min contrast

Performance

/25

14/25

0 fonts

Heading Font

monospace

Mono26px

Body Font

sans-serif

Sans16px

Contrast Ratio

2.43:1

2 issues

Reading Comfort

Monospace Pairing

left aligned

26px

16px

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

⚠️ Tight line spacing (1.15). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.4:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Lean font stack: 0 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Flesch 57

Color Palette

8 unique colors

21:1 AAA Light

#ffffff

Background· 72.6%

#000000

Text· 9.8%

#80a3b4

Primary· 4%

#d1d0be

Secondary· 3.9%

#436661

Secondary· 2.8%

#adcbdf

Secondary· 2.6%

#b8a376

Secondary· 1.4%

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Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

stats(1)

Website Identity

astroviewer.net

info@astroviewer.net

20 years old

Location detected: 🇩🇪 Germanyvia ip

Cronon GmbHen

Sponsored

Last analyzed: 13 May 2026 at 03:23

Historical Analysis & Change Tracking