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johnhaller.com

https://johnhaller.com· First analyzed 25 May 2026· Updated 25 May 2026
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johnhaller.com
Desktop screenshot of johnhaller.com
Mobile screenshot of johnhaller.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.19.202

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

armando.ns.cloudflare.com.gabriella.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

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

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

4 Technologies Detected

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

CDN

1
Cloudflare

SEO Analysis

C61/100
17
6
1
Meta Tags9/15
Content9/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
J
johnhaller.comjohnhaller.com

John T. Haller's Homepage | JohnHaller.com

No description available for this page.

Title Length42 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

70 rules

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.

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AI & LLM Readiness

D45/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
0/25
Citation
13/25

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
navheader/footer
Text ratio:17%
Words:365
Token eff.:Optimal
Sections/1K:8.2
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary64w
Descriptive Headingsavg 3w
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...
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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
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
70/100
A+
9 mg
CO₂e / view
86.6 KB
Page Weight
95%
Cleaner Than
New Visitor
10 mg
vs
Returning (cached)
5 mg
Annual (10K/mo)
1.0 kg
Emission Segments
Data Center
<0.001 g
Network
3 mg
Device
6 mg
Resource Breakdown
JavaScript
46.2 KB
Images
20.8 KB
CSS
12.9 KB
Fonts
1.9 KB
HTML
4.8 KB
Green Hosting Verified
Cloudflare
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

WAF

80d

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

15.05.2026

Valid Until

13.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

johnhaller.com*.johnhaller.com

SHA-256 Fingerprint

C0:33:5E:AF:35:D1:14:19:66:FB:36:0C:D8:57:3B:E0:4A:E2:7D:0B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cache-control
🟡 0s(public, max-age=0)
cf-cache-status
DYNAMIC
cf-ray🇩🇪 Frankfurt
a011863d6eafdc4c-FRA
content-encoding
zstd
content-language
en
Good Warning Issue

Email Infrastructure

Rackspace Email

Score

45

SPF
DKIM
DMARC

MX Records (2)

mx2.emailsrvr.com
mx1.emailsrvr.com

Domain Information

johnhaller.com

Domain Age
28y 2m

Created

12.03.1998

Expires

11.03.2027

Last Updated

10.03.2026

Registrar

eNom, LLC

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.
C
61/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Oswald + Open Sans

WCAG Partial
59/100
Readability
/30
21/30

15px · LH 1.50

Hierarchy
/20
14/20

1.87x ratio · ✓ H1→H6

WCAG
/25
15/25

1.95:1 min contrast

Performance
/25
9/25

3 fonts · 1 req

Heading Font

Oswald

Display28px

Body Font

Open Sans

Sans15px

Contrast Ratio

1.95:1

26 issues

Reading Comfort

~42 CPL

Narrow lines
28px
h1
21px
h2
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 26 elements below WCAG AA threshold (min 1.9:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

GGoogle FontsFlesch 49

Color Palette

10 unique colors
Light
#ffffff
Background· 65.7%
#1b5083
Primary· 8.8%
#afc2d4
Secondary· 4.1%
#323845
Secondary· 4.1%
#285d9b
Accent· 3.9%
#9c8a7b
Secondary· 3.1%
#dae1e7
Secondary· 2.9%
#566a88
Secondary· 1.5%

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

10 Resources

4
Scripts
6
Styles
0
Async
0
Defer

Top Script Sources

cdnjs.cloudflare.com(2)johnhaller.com(2)

Website Identity

johnhaller.com

28 years old
Location detected: 🇨🇦 Canadavia ip
eNom, LLC📧 Rackspace Emailen

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Last analyzed: 25 May 2026 at 03:41

Historical Analysis & Change Tracking