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netlib.org

https://netlib.org· First analyzed 25 Apr 2026· Updated 25 Apr 2026
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netlib.org
Desktop screenshot of netlib.org
Mobile screenshot of netlib.org
Mobile

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Hosting Provider

IP Address

160.36.239.231

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Knoxville, United States

ASN

AS3450

Organization

University of Tennessee

Server

Nginx

Nameservers

ns0.utk.edu.ns1.utk.edu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
292 ms10%
Speed Index
380 ms10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
11 KB
4 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
University of Tennessee

Technology Stack

2 Technologies Detected

Web Servers

1

SEO Analysis

D45/100
12
10
2
Meta Tags4/15
Content8/12
Headings6/8
Technical6/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
N
netlib.orgnetlib.org

The Netlib

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~57px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • Missing meta description — important for click-through rates in SERPs
  • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

Crawlability

Sitemap
robots.txt

8 rules

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

F26/100
Bot Access
20/25
Machine Read.
5/25
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
Text ratio:22%
Words:124
Token eff.:Too Short

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.
B
71/100
9
Passed
4
Critical
0
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
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.
2 recommendations
  • Accessibility recommendation preview...

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.
49/100
A+
1 mg
CO₂e / view
11.0 KB
Page Weight
95%
Cleaner Than
New Visitor
2 mg
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
168 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
Images
6.8 KB
HTML
4.1 KB
Green Hosting Not Verified
University of Tennessee
5 recommendations
  • Carbon footprint recommendation preview...
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

36d

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

02.03.2026

Valid Until

31.05.2026

Subject Alternative Names (2)

netlib.orgwww.netlib.org

SHA-256 Fingerprint

C0:DC:48:6C:38:FC:6C:0F:22:D5:15:B7:41:79:FA:D0:34:15:D4:7A...

Recommendations

Security recommendation preview

HTTP Headers

Developer Console

accept-ranges
bytes
content-type
text/html; charset=UTF-8
date
Sat, 25 Apr 2026 09:20:31 GMT
server
nginx/1.29.0
strict-transport-security
max-age=31536000
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

netlib-org.mail.protection.outlook.com

Domain Information

netlib.org

Domain Age
32y 2m

Created

04.03.1994

Expires

05.03.2027

Last Updated

09.01.2026

Registrar

Network Solutions, 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
32/100
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.
4 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

Times New Roman

WCAG AAA
78/100
Readability
/30
21/30

16px · LH --

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
24/25

9.4:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Times New Roman

Serif32px

Body Font

Times New Roman

Serif16px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

Single Font Family

left aligned
32px
h1
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

❌ Very complex text: Flesch score 26/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

✅ 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: 1 font families keeps load times fast.

Color Palette

10 unique colors
Light
#ffffff
Background· 89.3%
#cfd0dc
Primary· 2.1%
#202530
Secondary· 1.7%
#b0b1cb
Secondary· 1.3%
#7c849e
Secondary· 1.2%
#9896bd
Secondary· 1%
#94a9ad
Secondary· 1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1

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

1 Resources

1
Scripts
0
Styles
0
Async
0
Defer

Top Script Sources

google-analytics.com(1)

Website Identity

netlib.org

32 years old
Location detected: 🇺🇸 United Statesvia ip
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Last analyzed: 25 Apr 2026 at 09:20

Historical Analysis & Change Tracking