optimization-online.org

https://optimization-online.org· First analyzed 25 May 2026· Updated 25 May 2026

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Hosting Provider

University of Wisconsin Madison

IP Address

144.92.142.6

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Madison, United States

ASN

AS59

Organization

University of Wisconsin Madison

Server

Nginx

Nameservers

adns1.doit.wisc.edu.adns2.doit.wisc.edu.adns3.doit.wisc.edu.adns4.doit.wisc.edu.

Performance

Core Web Vitals

Weight

First Contentful Paint

776 ms10%

Speed Index

1.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

118 KB

28 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.1.10

cms

GeneratePressv3.1.3

by Tom Usborne

View Theme

Technology Stack

10 Technologies Detected

Plugins

Contact Form 7

Wp Captcha

Google Analytics For Wordpress

Analytics

Libraries

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

C61/100

Meta Tags4/15

Content10/12

Headings8/8

Technical21/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

optimization-online.orgoptimization-online.org

Optimization Online

No description available for this page.

Title Length19 chars

Recommended: 50-60 chars (~115px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (1/1) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

16 URLs

16 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

4/100

Poor

2 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

D42/100

Bot Access

20/25

Machine Read.

14/25

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

nav

Text ratio:11%

Words:1,658

Token eff.:Optimal

Sections/1K:3.6

Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary12w

Descriptive Headingsavg 1.3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

89/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

12/15

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

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

7/15

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.

68/100

A+

15 mg

CO₂e / view

118.1 KB

Page Weight

95%

Cleaner Than

New Visitor

17 mg

Returning (cached)

8 mg

Annual (10K/mo)

1.8 kg

Emission Segments

Data Center

3 mg

Network

4 mg

Device

8 mg

Resource Breakdown

JavaScript

59.0 KB

Images

1.5 KB

CSS

38.8 KB

HTML

18.7 KB

Green Hosting Not Verified

University of Wisconsin Madison

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

48d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (2)

optimization-online.orgwww.optimization-online.org

SHA-256 Fingerprint

E5:1C:7E:0E:26:47:91:89:4C:67:D6:E2:BD:D2:1C:EA:D2:4E:62:66...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 3s(max-age=3, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

18878

content-security-policy

frame-ancestors 'self';

content-type

text/html; charset=UTF-8

date

Mon, 25 May 2026 03:27:11 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

optimization-online.org

Domain Age

26 years

Created

24.05.2000

Expires

24.05.2029

Last Updated

07.03.2026

Registrar

DomainPeople, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

79/100

Mobile Friendly4 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...

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Typography & Readability

-apple-system

WCAG AA

83/100

Readability

/30

25/30

17px · LH 1.50

Hierarchy

/20

15/20

2.35x ratio · ✓ H1→H6

WCAG

/25

22/25

4.94:1 min contrast

Performance

/25

21/25

System fonts

Heading Font

-apple-system

Sans40px

Body Font

-apple-system

Sans17px

Contrast Ratio

4.94:1

WCAG AA (≥4.5:1)

Reading Comfort

~34 CPL

Narrow lines

40px

30px

20px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 7/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

Flesch 7

Color Palette

6 unique colors

15.91:1 AAA Light

#ffffff

Background· 76.00000000000001%

#222222

Text· 5.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

optimization-online.org(9)googletagmanager.com(1)

Website Identity

optimization-online.org

26 years old

Location detected: 🇺🇸 United Statesvia ip

DomainPeople, Inc.en-US

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Last analyzed: 25 May 2026 at 03:27

Historical Analysis & Change Tracking