ostermiller.org

https://ostermiller.org· First analyzed 20 May 2026· Updated 20 May 2026

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ostermiller.org

Mobile

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

54.219.118.150

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Jose, United States

ASN

AS16509

Organization

AWS EC2 (us-west-1)

Server

Apache

Nameservers

ns-788.awsdns-34.net.ns-1416.awsdns-49.org.ns-1983.awsdns-55.co.uk.ns-364.awsdns-45.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

500 ms10%

Speed Index

650 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

97 KB

28 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

1 Technologies Detected

Web Servers

Apache

SEO Analysis

D47/100

Meta Tags5/15

Content10/12

Headings6/8

Technical7/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ostermiller.orgostermiller.org

ostermiller.org

Software, projects, and documents by Stephen Ostermiller.

Title Length15 chars

Recommended: 50-60 chars (~87px / 580px)

Description Length57 chars

Recommended: 120-160 chars

Issues (1)

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

12 issues found

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Crawlability

Sitemap

robots.txt

8 rules

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.

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AI & LLM Readiness

F37/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

4/25

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:38%

Words:473

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

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 (11)

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.

75/100

Passed

Critical

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

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

1/15

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.

74/100

A+

10 mg

CO₂e / view

97.1 KB

Page Weight

95%

Cleaner Than

New Visitor

11 mg

Returning (cached)

6 mg

Annual (10K/mo)

1.2 kg

Emission Segments

Data Center

<0.001 g

Network

3 mg

Device

6 mg

Resource Breakdown

Images

93.5 KB

CSS

734 B

HTML

2.9 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

87d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

18.05.2026

Valid Until

16.08.2026

Subject Alternative Names (20)

*.attesoro.org*.coinmill.com*.debttriangle.com*.doozoon.com*.drughoundracing.com*.emilyphoto.com*.ijn.tl*.makrhod.com+12 more

SHA-256 Fingerprint

95:31:D7:BE:B0:2C:2E:DA:C5:29:0D:F5:9A:84:5E:10:E4:02:09:14...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

2637

content-type

text/html; charset=utf-8

date

Wed, 20 May 2026 05:17:00 GMT

etag

"1d91-65229810bbde8-gzip"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx1.sub4.homie.mail.dreamhost.com

mx2.sub4.homie.mail.dreamhost.com

Domain Information

ostermiller.org

Domain Age

25y 1m

Created

11.04.2001

Expires

11.04.2029

Last Updated

25.06.2024

Registrar

GoDaddy.com, 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.

27/100

Not 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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

sans-serif

WCAG AAA

79/100

Readability

/30

22/30

18px · LH --

Hierarchy

/20

19/20

2x ratio · ✓ H1→H6

WCAG

/25

24/25

7.75:1 min contrast

Performance

/25

14/25

0 fonts

Heading Font

sans-serif

Sans36px

Body Font

sans-serif

Sans18px

Contrast Ratio

7.75:1

WCAG AAA (≥7:1)

Reading Comfort

Single Font Family

left aligned

36px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.8:1).

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

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

✅ Lean font stack: 0 font families keeps load times fast.

Flesch 44

Color Palette

9 unique colors

2.78:1 Fail Light

#ffffff

Background· 77.69999999999999%

#8e9ea1

Secondary· 2.7%

#cfbebc

Secondary· 2.7%

#7c666d

Secondary· 2.5%

#c2a4a3

Secondary· 2.1%

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

ostermiller.org

25 years old

Location detected: 🇺🇸 United Statesvia ip

GoDaddy.com, LLC

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Last analyzed: 20 May 2026 at 05:17

Historical Analysis & Change Tracking