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zenpen.io

https://zenpen.io· First analyzed 28 May 2026· Updated 28 May 2026
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zenpen.io
Desktop screenshot of zenpen.io
Mobile screenshot of zenpen.io
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

63.176.8.218

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS16509

Organization

AWS EC2 (eu-central-1)

Server

Netlify

Nameservers

dns2.p01.nsone.net.dns3.p01.nsone.net.dns4.p01.nsone.net.dns1.p01.nsone.net.

Performance

100

Core Web Vitals

Weight

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

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Platform
Netlify

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Platforms

1
Netlify

SEO Analysis

D40/100
10
10
1
Meta Tags12/15
Content5/12
Headings4/8
Technical5/21
E-E-A-T0/7
Images0/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
Z
zenpen.iozenpen.io

ZenPen ~ Minimal Distraction, Maximum Zen

Zenpen - A minimal text editor, made to stay out of the way while you get the words down.

Title Length41 chars

Recommended: 50-60 chars (~252px / 580px)

Description Length89 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100
Poor
15 2

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

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AI & LLM Readiness

F29/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
0/25
Citation
1/25

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
blockquotes
Text ratio:19%
Words:147
Token eff.:Too Short
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary18w
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 (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
C
66/100
7
Passed
4
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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.
3 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.
75/100
A+
2 mg
CO₂e / view
20.8 KB
Page Weight
95%
Cleaner Than
New Visitor
2 mg
vs
Returning (cached)
1 mg
Annual (10K/mo)
252 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
1 mg
Resource Breakdown
JavaScript
11.7 KB
CSS
5.8 KB
Fonts
1.9 KB
HTML
1.4 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

20%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
age
14508
cache-control
🟡 0s(public,max-age=0,must-revalidate)
cache-status
"Netlify Edge"; hit
content-encoding
⚡ Brotli(br)
content-length
1119
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

zenpen.io

Domain Age
13y 4m

Created

27.01.2013

Expires

27.01.2027

Last Updated

31.01.2026

Registrar

Porkbun 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.
F
36/100
Not 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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Lora

WCAG Partial
70/100
Readability
/30
26/30

22px · LH 1.36

Hierarchy
/20
12/20

0.91x ratio

WCAG
/25
19/25

2.12:1 min contrast

Performance
/25
13/25

1 font · 2 req

Heading Font

Lora

Serif20px

Body Font

Lora

Serif22px

Contrast Ratio

2.12:1

1 issue

Reading Comfort

~50 CPL

Optimal (45–75)
20px
h1
22px
p

✅ Excellent readability: 22px body text is ideal for all devices.

⚠️ Tight line spacing (1.36). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~50 chars/line (ideal 45–75 CPL).

✅ Easy to read: Flesch score 77/100 — accessible to general audiences.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.1:1).

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

GGoogle FontsFlesch 77

Color Palette

6 unique colors
5.01:1 AA Light
#fdfdfd
Background· 92.89999999999999%
#6e6e6e
Other· 1%

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

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Scripts & Styles

13 Resources

10
Scripts
3
Styles
3
Async
0
Defer

Top Script Sources

js(7)googletagmanager.com(2)google-analytics.com(1)

Website Identity

zenpen.io

13 years old
Location detected: 🇩🇪 Germanyvia ip
Porkbun LLC

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Last analyzed: 28 May 2026 at 17:17

Historical Analysis & Change Tracking