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3v4l.org

https://3v4l.org· First analyzed 15 May 2026· Updated 15 May 2026
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3v4l.org
Desktop screenshot of 3v4l.org
Mobile screenshot of 3v4l.org
Mobile

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Hosting Provider

Hetzner
hetzner.com

IP Address

88.99.124.196

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner Online GmbH

Server

Nginx

Nameservers

ns0.transip.net.ns2.transip.eu.ns1.transip.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
292 ms10%
Speed Index
380 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
25 KB
12 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hetzner

Progressive Web App

Web Manifest

Technology Stack

2 Technologies Detected

Other

1
AOS (Animate On Scroll)

Web Servers

1
Nginx

SEO Analysis

C65/100
17
8
0
Meta Tags13/15
Content11/12
Headings8/8
Technical12/25
E-E-A-T3/7
Images0/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile1/4
Indexability3/3
3
3v4l.org3v4l.org

Online PHP editor | Test code in 250+ PHP versions

Run your php code online; get statistics, vld output and compare output from all versions.

Title Length50 chars

Recommended: 50-60 chars (~299px / 580px)

Description Length90 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    4 rules

    Sitemap reference found

    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

    D48/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    16/25

    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
    code blocksnav
    Text ratio:13%
    Words:746
    Token eff.:Optimal
    Sections/1K:4
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary45w
    Descriptive Headingsavg 5w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (6)
    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
    77/100
    11
    Passed
    3
    Critical
    1
    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
    12/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    12/15
    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
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    72/100
    A+
    3 mg
    CO₂e / view
    24.7 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    3 mg
    vs
    Returning (cached)
    1 mg
    Annual (10K/mo)
    300 g
    Emission Segments
    Data Center
    <0.001 g
    Network
    <0.001 g
    Device
    2 mg
    Resource Breakdown
    JavaScript
    12.4 KB
    CSS
    4.8 KB
    HTML
    7.5 KB
    Green Hosting Verified
    Hetzner Online GmbH
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Interactive

    HTTPS

    No WAF

    85d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    11.05.2026

    Valid Until

    09.08.2026

    Subject Alternative Names (2)

    3v4l.orgwww.3v4l.org

    SHA-256 Fingerprint

    1E:BF:8F:4A:E1:B7:CF:43:74:EC:B1:12:0E:1D:83:30:0C:14:E2:DF...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 45s(public, max-age=45)
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    default-src 'none'; script-src 'self' 'unsafe-eval' cdn.jsde...
    content-type
    text/html; charset=UTF-8
    date
    Fri, 15 May 2026 13:27:16 GMT
    last-modified
    Fri, 15 May 2026 13:26:45 GMT
    Good Warning Issue

    Email Infrastructure

    Proton Mail

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (2)

    mail.protonmail.ch
    mailsec.protonmail.ch

    Domain Information

    3v4l.org

    Domain Age
    14y 1m

    Created

    17.04.2012

    Expires

    17.04.2027

    Last Updated

    17.04.2026

    Registrar

    Key-Systems 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 Friendly3 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, initial-scale=1
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Arial

    WCAG Partial
    72/100
    Readability
    /30
    14/30

    13px · LH --

    Hierarchy
    /20
    19/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    19/25

    1.32:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Arial

    Sans26px

    Body Font

    Arial

    Sans13px

    Contrast Ratio

    1.32:1

    1 issue

    Reading Comfort

    Single Font Family

    left aligned
    26px
    h1
    20px
    h2
    13px
    p

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

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.3:1).

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

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Flesch 53

    Color Palette

    5 unique colors
    15.91:1 AAA Light
    #ffffff
    Background· 83.59999999999998%
    #222222
    Other· 5.8%
    #666d84
    Primary· 1.4%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Twitter/X WidgetsFree

    Social widgets and sharing tools

    2

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    7 Resources

    7
    Scripts
    0
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    cdn.jsdelivr.net(5)local(2)

    Website Identity

    3v4l.org

    14 years old
    Location detected: 🇩🇪 Germanyvia ip
    Key-Systems GmbH📧 Proton Mailen-US

    Social Profiles

    X (Twitter)

    Sponsored

    Last analyzed: 15 May 2026 at 13:27

    Historical Analysis & Change Tracking