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swizec.com

https://swizec.com· First analyzed 15 May 2026· Updated 15 May 2026
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swizec.com
Desktop screenshot of swizec.com
Mobile screenshot of swizec.com
Mobile

Sponsored

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

dns1.registrar-servers.com.dns2.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
380 ms10%
Speed Index
494 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
46 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Gatsbyv5.12.11
Infrastructure
Platform
Vercel

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Frameworks

1
Angular

Meta Frameworks

1
Gatsby

Libraries

1
jQuery

Other

1
D3.js

CSS Frameworks

1
Tailwind CSS

Analytics

1
Plausible Analytics

Platforms

1
Vercel

SEO Analysis

C63/100
19
8
0
Meta Tags8/15
Content10/12
Headings6/8
Technical13/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
S
swizec.comswizec.com

Swizec Teller

Swizec shares software engineering lessons from production in his books, articles, talks, and workshops

Title Length13 chars

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

Description Length103 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    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

    D42/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    0/25
    Citation
    13/25

    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
    blockquotes
    Text ratio:2%
    Words:3,673
    Token eff.:Good
    Sections/1K:8.7
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary13w
    Descriptive Headingsavg 6w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    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.
    A
    80/100
    12
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    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
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 recommendations
    • •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.
    69/100
    C
    152 mg
    CO₂e / view
    1.5 MB
    Page Weight
    60%
    Cleaner Than
    New Visitor
    174 mg
    vs
    Returning (cached)
    87 mg
    Annual (10K/mo)
    18.2 kg
    Emission Segments
    Data Center
    7 mg
    Network
    45 mg
    Device
    100 mg
    Resource Breakdown
    JavaScript
    499.2 KB
    Images
    767.4 KB
    CSS
    74.4 KB
    HTML
    142.3 KB
    Other
    21.3 KB
    Green Hosting Verified
    Vercel
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    38d

    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

    25.03.2026

    Valid Until

    23.06.2026

    Subject Alternative Names (1)

    swizec.com

    SHA-256 Fingerprint

    33:26:43:B4:7F:6D:D9:82:45:B4:C0:0A:6F:22:6E:F7:D2:B6:A1:72...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    180414
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    content-disposition
    inline
    content-encoding
    ⚡ Brotli(br)
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (5)

    alt3.aspmx.l.google.com
    alt1.aspmx.l.google.com
    alt2.aspmx.l.google.com
    aspmx.l.google.com

    +1 more

    Domain Information

    swizec.com

    Domain Age
    20y 11m

    Created

    02.06.2005

    Expires

    02.06.2031

    Last Updated

    01.06.2022

    Registrar

    NameCheap, Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    Data Protection Officer mentioned

    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.
    B
    79/100
    Mobile Friendly28 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, shrink-to-fit=no
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Exo + Yrsa

    WCAG AA
    83/100
    Readability
    /30
    26/30

    23px · LH 1.38

    Hierarchy
    /20
    17/20

    2.09x ratio

    WCAG
    /25
    22/25

    4.82:1 min contrast

    Performance
    /25
    18/25

    2 fonts · 4 req

    Heading Font

    Exo

    Sans48px

    Body Font

    Yrsa

    Sans23px

    Contrast Ratio

    4.82:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~37 CPL

    Narrow lines
    48px
    h1
    32px
    h2
    25px
    h3
    23px
    h4
    23px
    p

    ✅ Excellent readability: 23px body text is ideal for all devices.

    ⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

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

    ⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 2.1x larger than body text.

    ✅ Lean font stack: 2 font families keeps load times fast.

    Buy on MyFontsFlesch 64

    Color Palette

    11 unique colors
    Light
    #ffffff
    Background· 68.30000000000001%
    #151525
    Secondary· 5.4%
    #ff002b
    Primary· 0%
    #6d5766
    Secondary· 4.5%
    #6c212c
    Accent· 4%
    #0e0a12
    Secondary· 3.3%
    #562938
    Secondary· 2.9%
    #c08179
    Secondary· 2.3%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    PlausibleSMB
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Twitter/X WidgetsFree

    Social widgets and sharing tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    8 Resources

    8
    Scripts
    0
    Styles
    6
    Async
    1
    Defer

    Top Script Sources

    local(5)platform.twitter.com(2)plausible.io(1)

    Website Identity

    swizec.com

    hi@swizec.com
    20 years old
    Location detected: 🇺🇸 United Statesvia ip
    NameCheap, Inc.📧 Google Workspaceen-us

    Social Profiles

    X (Twitter)GitHub

    Sponsored

    Last analyzed: 15 May 2026 at 18:06

    Historical Analysis & Change Tracking