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hertzen.com

https://hertzen.com· First analyzed 14 May 2026· Updated 14 May 2026
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hertzen.com
Desktop screenshot of hertzen.com
Mobile screenshot of hertzen.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.65.51

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

lady.ns.cloudflare.com.igor.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

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

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Platform
GitHub Pages
CDN
Cloudflare

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Segment

Libraries

1
jQueryv1.7.2

CSS Frameworks

1
Bootstrap

CDN

1
Cloudflare

SEO Analysis

D56/100
16
8
0
Meta Tags5/15
Content8/12
Headings6/8
Technical11/21
E-E-A-T3/7
Images4/7
Links4/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
H
hertzen.comhertzen.com

Niklas von Hertzen

Front-end web developer and a student

Title Length18 chars

Recommended: 50-60 chars (~107px / 580px)

Description Length37 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    6/100
    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

    D40/100
    Bot Access
    20/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    8/25

    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:6%
    Words:393
    Token eff.:Optimal
    Sections/1K:33.1

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary11w
    Descriptive Headingsavg 2.7w
    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.
    B
    74/100
    9
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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...
    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.
    65/100
    A+
    19 mg
    CO₂e / view
    192.2 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    22 mg
    vs
    Returning (cached)
    11 mg
    Annual (10K/mo)
    2.3 kg
    Emission Segments
    Data Center
    1 mg
    Network
    6 mg
    Device
    13 mg
    Resource Breakdown
    JavaScript
    64.5 KB
    Images
    16.8 KB
    CSS
    106.9 KB
    HTML
    4.0 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    WAF

    39d

    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+H3

    Valid From

    24.03.2026

    Valid Until

    22.06.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    hertzen.com*.hertzen.com

    SHA-256 Fingerprint

    90:28:26:66:B2:B9:19:5B:27:7D:B0:E5:24:DD:DC:AB:12:D1:1E:6F...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    0
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 600s(max-age=600)
    cf-cache-status
    DYNAMIC
    cf-ray🇫🇷 Paris
    9fba31b0992e7ae7-CDG
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (1)

    _dc-mx.1862c89ca15d.hertzen.com

    Domain Information

    hertzen.com

    Domain Age
    22y 4m

    Created

    10.01.2004

    Expires

    10.01.2027

    Last Updated

    11.01.2026

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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 Friendly
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue

    WCAG Partial
    70/100
    Readability
    /30
    16/30

    13px · LH 1.38

    Hierarchy
    /20
    18/20

    4.62x ratio

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans60px

    Body Font

    Helvetica Neue

    Sans13px

    Contrast Ratio

    1:1

    4 issues

    Reading Comfort

    ~66 CPL

    Optimal (45–75)
    60px
    h1
    24px
    h2
    18px
    h3
    13px
    p

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

    ⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

    ✅ Optimal line length: ~66 chars/line (ideal 45–75 CPL).

    ⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 4.6x larger than body text.

    Flesch 58

    Color Palette

    11 unique colors
    15.06:1 AAA Light
    #ffffff
    Background· 58.699999999999996%
    #282625
    Text· 6.4%
    #f3ebc6
    Accent· 9.1%
    #f5f4ea
    Primary· 4.6%
    #855a39
    Secondary· 3.4%
    #d1cabe
    Secondary· 3.3%
    #e2e2db
    Secondary· 3.2%
    #6f3920
    Accent· 2.7%

    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

    10 Resources

    9
    Scripts
    1
    Styles
    4
    Async
    0
    Defer

    Top Script Sources

    apis.google.com(3)platform.twitter.com(2)google-analytics.com(1)ajax.googleapis.com(1)js(1)

    Website Identity

    hertzen.com

    22 years old
    Location detected: 🇨🇦 Canadavia ip
    GoDaddy.com, LLCen

    Sponsored

    Last analyzed: 14 May 2026 at 13:19

    Historical Analysis & Change Tracking