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yacy.net

https://yacy.net· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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yacy.net
Desktop screenshot of yacy.net
Mobile screenshot of yacy.net
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

188.40.30.87

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns1.your-server.de.ns3.second-ns.de.ns.second-ns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
614 ms10%
Speed Index
798 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.4 MB
35 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Hetzner

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQuery

Icon Libraries

1
Font Awesome

Web Servers

1
Apache

SEO Analysis

C63/100
18
8
0
Meta Tags5/15
Content9/12
Headings8/8
Technical18/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
Y
yacy.netyacy.net

Home - YaCy

YaCy P2P - Decentralized Search Engine

Title Length11 chars

Recommended: 50-60 chars (~71px / 580px)

Description Length38 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    45 URLs

    robots.txt

    5 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    D41/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    0/25
    Citation
    12/25

    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
    Text ratio:11%
    Words:367
    Token eff.:Optimal
    Sections/1K:27.2

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary33w
    Descriptive Headingsavg 2w
    Canonical URL
    Open Graph0/3
    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.
    B
    78/100
    12
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    13/20
    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
    11/15
    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.
    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.
    25/100
    F
    457 mg
    CO₂e / view
    4.4 MB
    Page Weight
    15%
    Cleaner Than
    New Visitor
    522 mg
    vs
    Returning (cached)
    261 mg
    Annual (10K/mo)
    54.8 kg
    Emission Segments
    Data Center
    22 mg
    Network
    134 mg
    Device
    300 mg
    Resource Breakdown
    JavaScript
    1.3 MB
    Images
    185.6 KB
    CSS
    2.9 MB
    HTML
    15.1 KB
    Green Hosting Verified
    Hetzner Online GmbH
    GWF Verified
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    187d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    18.04.2026

    Valid Until

    02.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    yacy.netwww.yacy.net

    SHA-256 Fingerprint

    2B:23:15:E8:1D:B1:20:9E:F8:CC:4F:D9:54:95:D3:87:AD:14:4D:29...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    content-length
    15168
    content-type
    text/html
    date
    Wed, 29 Apr 2026 18:19:28 GMT
    etag
    "3b40-64e26b1faee80"
    last-modified
    Sun, 29 Mar 2026 09:52:42 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (1)

    www311.your-server.de

    Domain Information

    yacy.net

    Domain Age
    21y 10m

    Created

    30.06.2004

    Expires

    30.06.2026

    Last Updated

    25.11.2025

    Registrar

    Hetzner Online GmbH

    DNSSEC
    Not Enabled

    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.
    D
    58/100
    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...
    Upgrade to view recommendations

    Typography & Readability

    LatoLatinWeb

    WCAG Fail
    63/100
    Readability
    /30
    18/30

    13px · LH 1.70

    Hierarchy
    /20
    20/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    13/25

    1 font · 3 req

    Heading Font

    LatoLatinWeb

    Sans39px

    Body Font

    LatoLatinWeb

    Sans13px

    Contrast Ratio

    1:1

    33 issues

    Reading Comfort

    ~46 CPL

    Optimal (45–75)
    39px
    h1
    32px
    h2
    26px
    h3
    19px
    h4
    13px
    p

    ❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

    ✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

    ❌ Low contrast: 33 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFontsFlesch 59

    Color Palette

    7 unique colors
    Dark
    #000000
    Text· 41.300000000000004%
    #2b3e4f
    Secondary· 25.7%
    #4d5d6c
    Secondary· 15.1%
    #0f2926
    Primary· 8.2%
    #7ec0b7
    Secondary· 4.6%
    #386c74
    Secondary· 3.6%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    12 Resources

    6
    Scripts
    6
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    js(5)search(1)

    Website Identity

    yacy.net

    21 years old
    Location detected: 🇩🇪 Germanyvia ip
    Hetzner Online GmbHen

    Social Profiles

    X (Twitter)GitHub

    Sponsored

    Last analyzed: 29 Apr 2026 at 18:19

    Historical Analysis & Change Tracking