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mitchellh.com

https://mitchellh.com· First analyzed 13 May 2026· Updated 13 May 2026
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mitchellh.com
Desktop screenshot of mitchellh.com
Mobile screenshot of mitchellh.com
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-645.awsdns-16.net.ns-1144.awsdns-15.org.ns-1809.awsdns-34.co.uk.ns-458.awsdns-57.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
452 ms10%
Speed Index
588 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
339 KB
31 requests
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Infrastructure
Platform
Vercel

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

3 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Platforms

1
Vercel

SEO Analysis

D42/100
13
9
0
Meta Tags5/15
Content3/12
Headings4/8
Technical13/25
E-E-A-T0/7
Images0/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
M
mitchellh.commitchellh.com

Mitchell Hashimoto

Mitchell Hashimoto's personal website.

Title Length18 chars

Recommended: 50-60 chars (~108px / 580px)

Description Length38 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    56 URLs

    robots.txt

    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

    F32/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    5/25

    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:3%
    Words:142
    Token eff.:Too Short
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary14w
    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 (9)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    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.
    B
    78/100
    11
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    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
    3/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    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.
    78/100
    A+
    34 mg
    CO₂e / view
    339.1 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    39 mg
    vs
    Returning (cached)
    20 mg
    Annual (10K/mo)
    4.1 kg
    Emission Segments
    Data Center
    2 mg
    Network
    10 mg
    Device
    23 mg
    Resource Breakdown
    JavaScript
    179.5 KB
    Images
    1.2 KB
    CSS
    13.6 KB
    Fonts
    124.8 KB
    HTML
    6.3 KB
    Other
    13.7 KB
    Green Hosting Verified
    Vercel
    Provider Match
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A+

    Security Score

    100%Excellent
    Static / Informational

    HTTPS

    No WAF

    33d

    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/2

    Valid From

    17.03.2026

    Valid Until

    15.06.2026

    Subject Alternative Names (1)

    mitchellh.com

    SHA-256 Fingerprint

    42:01:60:84:30:DB:A5:0C:A1:79:09:85:F8:91:BF:12:D1:1B:1C:AE...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    1256679
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    content-disposition
    inline
    content-encoding
    ⚡ Brotli(br)
    content-security-policy
    default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe...
    Good Warning Issue

    Email Infrastructure

    Fastmail

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (2)

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

    Domain Information

    mitchellh.com

    Domain Age
    13y 4m

    Created

    11.01.2013

    Expires

    11.01.2031

    Last Updated

    25.07.2025

    Registrar

    Gandi SAS

    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
    64/100
    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...
    Upgrade to view recommendations

    Typography & Readability

    NimbusSansBold + PT Serif

    WCAG Partial
    63/100
    Readability
    /30
    23/30

    16px · LH 1.75

    Hierarchy
    /20
    12/20

    1.06x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    3.3:1 min contrast

    Performance
    /25
    12/25

    3 fonts · 6 req

    Heading Font

    NimbusSansBold

    Sans17px

    Body Font

    PT Serif

    Serif16px

    Contrast Ratio

    3.3:1

    15 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    17px
    h1
    16px
    p

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

    ⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 3.3:1).

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

    ⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

    ✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

    Buy on MyFontsFlesch 60

    Color Palette

    8 unique colors
    2.61:1 Fail Light
    #ffffff
    Background· 93.5%
    #99a2a4
    Other· 0.9%
    #c6dad0
    Primary· 1.5%
    #e2e8e6
    Secondary· 0.8%
    #acd7bd
    Secondary· 0.7%

    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

    Sponsored

    Scripts & Styles

    13 Resources

    12
    Scripts
    1
    Styles
    9
    Async
    2
    Defer

    Top Script Sources

    local(12)

    Website Identity

    mitchellh.com

    m@mitchellh.com
    13 years old
    Location detected: 🇺🇸 United Statesvia ip
    Gandi SAS📧 Fastmailen

    Sponsored

    Last analyzed: 13 May 2026 at 10:17

    Historical Analysis & Change Tracking