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lhotka.net

https://lhotka.net· First analyzed 25 May 2026· Updated 25 May 2026
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lhotka.net
Desktop screenshot of lhotka.net
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Mobile

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Hosting Provider

GitHub Pages
pages.github.com

IP Address

185.199.108.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

dns102.register.com.dns101.register.com.

Performance

100

Core Web Vitals

Weight

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

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Jekyllv3.10.0
Infrastructure
Platform
GitHub Pages
CDN
Fastly

Technology Stack

10 Technologies Detected

Advertising

4
Google AdsGoogle AdSenseCriteoOutbrain

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Material Icons

Fonts

1
Google Fonts

Payments

1
Square

SEO Analysis

D58/100
15
9
1
Meta Tags4/15
Content10/12
Headings6/8
Technical16/21
E-E-A-T0/7
Images4/7
Links4/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
L
lhotka.netlhotka.net

Rockford Lhotka | lhotka.net

No description available for this page.

Title Length28 chars

Recommended: 50-60 chars (~167px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

10 issues found

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Local SEO

Local Search Readiness

7/100
Poor
2 14 1

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

F37/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
2/25
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
header/footer
Text ratio:12%
Words:8,360
Token eff.:Excessive
Sections/1K:2.3
Depth:1/5

Structured Data

1 JSON-LD
WebSite

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 3.4w
Canonical URL
Open Graph1/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
83/100
12
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
16/20
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...
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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.
52/100
A
52 mg
CO₂e / view
419.6 KB
Page Weight
90%
Cleaner Than
New Visitor
59 mg
vs
Returning (cached)
30 mg
Annual (10K/mo)
6.2 kg
Emission Segments
Data Center
12 mg
Network
13 mg
Device
28 mg
Resource Breakdown
JavaScript
364.8 KB
Images
7.7 KB
CSS
38.2 KB
Fonts
6.2 KB
HTML
2.7 KB
Green Hosting Not Verified
GitHub Pages
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical
Critical / Transactional

HTTPS

No WAF

55d

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

Valid From

21.04.2026

Valid Until

20.07.2026

Subject Alternative Names (2)

lhotka.netwww.lhotka.net

SHA-256 Fingerprint

87:D9:33:CD:21:91:FA:59:E4:36:F8:35:D2:8C:C6:A6:4E:63:42:3F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
🟡 600s(max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
2435
Good Warning Issue

Email Infrastructure

Google Workspace

Score

20

SPF
DKIM
DMARC

MX Records (7)

aspmx5.googlemail.com
alt2.aspmx.l.google.com
aspmx.l.google.com
alt1.aspmx.l.google.com

+3 more

Domain Information

lhotka.net

Domain Age
25y 9m

Created

18.08.2000

Expires

18.08.2026

Last Updated

19.07.2023

Registrar

Register.com - Network Solutions, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
Privacy policy page linked
Legitimate interest basis 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
76/100
Mobile Friendly11 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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue + Open Sans

WCAG AA
69/100
Readability
/30
17/30

12px · LH 1.33

Hierarchy
/20
18/20

4x ratio

WCAG
/25
20/25

5.17:1 min contrast

Performance
/25
14/25

System fonts

Heading Font

Helvetica Neue

Sans48px

Body Font

Open Sans

Sans12px

Contrast Ratio

5.17:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines
48px
h1
22px
h2
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.2:1).

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

✅ Strong hierarchy: Headlines are 4.0x larger than body text.

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

GGoogle FontsFlesch 54

Color Palette

5 unique colors
6.69:1 AA Dark
#5c5c5c
Other· 71.39999999999998%
#ffffff
Background· 23.9%
#455b79
Primary· 1.3%
#7e8a9a
Secondary· 1.2%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Google AdsEnterprise

Ad platforms and retargeting pixels

2

Categories

2

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

Ad Networks

Google AdSenseMedia.netSovrnPubMaticOpenXIndex Exchange

Sponsored

Scripts & Styles

8 Resources

5
Scripts
3
Styles
4
Async
0
Defer

Top Script Sources

pagead2.googlesyndication.com(2)fundingchoicesmessages.google.com(2)googletagmanager.com(1)

Website Identity

lhotka.net

lhotka.net/
25 years old
Location detected: 🇺🇸 United Statesvia ip
Register.com - Network Solutions, LLC📧 Google Workspaceen-US

Social Profiles

FacebookGitHub

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Last analyzed: 25 May 2026 at 01:53

Historical Analysis & Change Tracking