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jblevins.org

https://jblevins.org· First analyzed 29 May 2026· Updated 29 May 2026
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jblevins.org
Desktop screenshot of jblevins.org
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Mobile

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Hosting Provider

Linode (Akamai)
linode.com

IP Address

69.164.221.6

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Cedar Knolls, United States

ASN

AS63949

Organization

Linode

Server

Apache

Nameservers

ns3.linode.com.ns4.linode.com.ns1.linode.com.ns5.linode.com.+1 more

Performance

88

Core Web Vitals

Weight

First Contentful Paint
1.6 s10%
Speed Index
2.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
124 KB
23 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Linode (Akamai)

Technology Stack

2 Technologies Detected

Analytics

1
Clicky

Web Servers

1
Apachev2.4.66

SEO Analysis

C60/100
19
8
0
Meta Tags8/15
Content5/12
Headings6/8
Technical16/25
E-E-A-T3/7
Images5/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
J
jblevins.orgjblevins.org

Jason Blevins

Professor of Economics at The Ohio State University. Includes CV, research, teaching materials, and software projects.

Title Length13 chars

Recommended: 50-60 chars (~76px / 580px)

Description Length118 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    297 URLs

    robots.txt

    11 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    5/100
    Poor
    2 13 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    F35/100
    Bot Access
    20/25
    Machine Read.
    7/25
    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
    navheader/footer
    Text ratio:6%
    Words:57
    Token eff.:Too Short
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary10w
    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 (8)
    AI readiness recommendation preview...
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    Sponsored

    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
    80/100
    11
    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
    20/20
    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.
    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.
    77/100
    A+
    13 mg
    CO₂e / view
    124.0 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    14 mg
    vs
    Returning (cached)
    7 mg
    Annual (10K/mo)
    1.5 kg
    Emission Segments
    Data Center
    <0.001 g
    Network
    4 mg
    Device
    8 mg
    Resource Breakdown
    JavaScript
    7.0 KB
    Images
    111.1 KB
    CSS
    4.4 KB
    HTML
    1.6 KB
    Green Hosting Verified
    Linode (Akamai)
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
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    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    73d

    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/1.1

    Valid From

    12.05.2026

    Valid Until

    10.08.2026

    Subject Alternative Names (1)

    jblevins.org

    SHA-256 Fingerprint

    08:F6:A3:DA:B4:98:94:54:4B:D8:91:3A:0C:71:20:23:8C:70:28:90...

    Recommendations

    Security recommendation preview

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    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    cache-control
    🟡 0s(max-age=0)
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    1372
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Fastmail

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (2)

    in1-smtp.messagingengine.com
    in2-smtp.messagingengine.com

    Domain Information

    jblevins.org

    Domain Age
    18y 7m

    Created

    20.10.2007

    Expires

    20.10.2026

    Last Updated

    24.10.2025

    Registrar

    Tucows Domains Inc.

    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.
    D
    52/100
    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.
    Viewport
    width=device-width, initial-scale=1
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    Garamond Premier Pro + Myriad Pro

    WCAG AA
    69/100
    Readability
    /30
    22/30

    14px · LH 1.71

    Hierarchy
    /20
    14/20

    3.43x ratio · ✓ H1→H6

    WCAG
    /25
    21/25

    4.8:1 min contrast

    Performance
    /25
    12/25

    3 fonts

    Heading Font

    Garamond Premier Pro

    Sans48px

    Body Font

    Myriad Pro

    Sans14px

    Contrast Ratio

    4.8:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~45 CPL

    Optimal (45–75)
    48px
    h1
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

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

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.8:1).

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

    ✅ Strong hierarchy: Headlines are 3.4x larger than body text.

    Buy on MyFontsFlesch 44

    Color Palette

    11 unique colors
    7.67:1 AAA Light
    #ffffff
    Background· 87.8%
    #56534c
    Other· 0.5%
    #6e593d
    Primary· 2%
    #43382a
    Secondary· 1.6%
    #647183
    Secondary· 1.6%
    #887159
    Secondary· 1%
    #e2dbd9
    Secondary· 0.8%

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    Scripts & Styles

    3 Resources

    2
    Scripts
    1
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    use.typekit.com(1)static.getclicky.com(1)

    Website Identity

    jblevins.org

    [email protected]
    18 years old
    Location detected: 🇺🇸 United Statesvia ip
    Tucows Domains Inc.📧 Fastmailen

    Sponsored

    Last analyzed: 29 May 2026 at 02:10

    Historical Analysis & Change Tracking

    jblevins.org Technology Stack - Built With Clicky, Apache | StackOptic | StackOptic