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centropa.org

https://centropa.org· First analyzed 17 May 2026· Updated 17 May 2026
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centropa.org
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Mobile screenshot of centropa.org
Mobile

Sponsored

Hosting Provider

DigitalOcean
digitalocean.com

IP Address

144.126.245.30

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS14061

Organization

DigitalOcean, LLC

Server

Nginx

Nameservers

ns2.digitalocean.com.ns3.digitalocean.com.ns1.digitalocean.com.

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%
257 KB
52 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
Drupal
Infrastructure
Hosting
DigitalOcean

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Fonts

2
Adobe Fonts (Typekit)Adobe Fonts

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

B75/100
24
5
0
Meta Tags13/15
Content10/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
C
centropa.orgcentropa.org

Jewish witness to the 20th century | Centropa

Preserving Jewish memory. Bringing history to life. Explore our archive of 1,230 interviews and 25,664 family pictures from 15 European countries, and use th...

Description truncated.
Title Length45 chars

Recommended: 50-60 chars (~278px / 580px)

Description Length176 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    14 URLs

    14 sub-sitemaps

    robots.txt

    64 rules

    Local SEO

    Local Search Readiness

    10/100
    Poor
    3 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

    D46/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    15/25

    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
    nav
    Text ratio:3%
    Words:742
    Token eff.:Optimal
    Sections/1K:9.4
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary153w
    Descriptive Headingsavg 4.2w
    Canonical URL
    Open Graph2/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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.
    A
    84/100
    14
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    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
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    9/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •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.
    87/100
    A+
    26 mg
    CO₂e / view
    256.7 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    30 mg
    vs
    Returning (cached)
    15 mg
    Annual (10K/mo)
    3.1 kg
    Emission Segments
    Data Center
    1 mg
    Network
    8 mg
    Device
    17 mg
    Resource Breakdown
    JavaScript
    120.8 KB
    Images
    1.7 KB
    CSS
    113.5 KB
    HTML
    20.6 KB
    Green Hosting Verified
    DigitalOcean
    Provider Match
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    86d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    13.05.2026

    Valid Until

    11.08.2026

    Subject Alternative Names (9)

    centropa.hucentropa.orgform.jewishcemeteries.eunew.centropa.orgpodcast.centropa.orgsupport.centropa.orgukrainianstories.centropa.orgwww.centropa.hu+1 more

    SHA-256 Fingerprint

    BD:76:C6:33:AA:EB:7F:78:CE:E4:84:4E:68:4D:40:A4:1F:CD:75:8B...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 900s(max-age=900, public)
    content-encoding
    ⚡ Brotli(br)
    content-language
    en
    content-type
    text/html; charset=UTF-8
    date
    Sun, 17 May 2026 11:25:42 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (5)

    alt2.aspmx.l.google.com
    aspmx.l.google.com
    alt1.aspmx.l.google.com
    alt3.aspmx.l.google.com

    +1 more

    Domain Information

    centropa.org

    Domain Age
    26y 10m

    Created

    07.07.1999

    Expires

    07.07.2027

    Last Updated

    13.05.2026

    Registrar

    CSL Computer Service Langenbach GmbH d/b/a joker.com

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    Privacy policy page linked
    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.
    B
    74/100
    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    museo + helvetica

    WCAG Partial
    63/100
    Readability
    /30
    19/30

    18px · LH 2.00

    Hierarchy
    /20
    19/20

    2.33x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    3.22:1 min contrast

    Performance
    /25
    10/25

    4 fonts

    Heading Font

    museo

    Sans42px

    Body Font

    helvetica

    Sans18px

    Contrast Ratio

    3.22:1

    20 issues

    Reading Comfort

    ~33 CPL

    Narrow lines
    42px
    h1
    36px
    h2
    24px
    h3
    18px
    p

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

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ❌ Very complex text: Flesch score 30/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 3.2:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 2.3x larger than body text.

    AAdobe FontsBuy on MyFontsFlesch 30

    Color Palette

    9 unique colors
    Light
    #fcfcfc
    Primary· 45.8%
    #1c1e22
    Secondary· 20.9%
    #818aa6
    Secondary· 7.2%
    #4d4b68
    Secondary· 6.4%
    #283454
    Secondary· 5.5%
    #1f75c0
    Accent· 4.8%
    #32253d
    Secondary· 4.7%
    #d1e3ee
    Primary· 2.9%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    14 Resources

    8
    Scripts
    6
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    local(6)googletagmanager.com(2)

    Website Identity

    centropa.org

    26 years old
    Location detected: 🇩🇪 Germanyvia ip
    CSL Computer Service Langenbach GmbH d/b/a joker.com📧 Google Workspaceen

    Sponsored

    Last analyzed: 17 May 2026 at 11:25

    Historical Analysis & Change Tracking