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quarto.org

https://quarto.org· First analyzed 05 May 2026· Updated 05 May 2026
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quarto.org
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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

15.197.167.90

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Netlify

Nameservers

dns3.p05.nsone.net.dns4.p05.nsone.net.dns1.p05.nsone.net.dns2.p05.nsone.net.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.7 MB
36 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Platform
Netlify

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Plausible AnalyticsFullStory

Platforms

1
Netlify

SEO Analysis

D59/100
16
10
0
Meta Tags9/15
Content10/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
Q
quarto.orgquarto.org

Quarto

An open source technical publishing system for creating beautiful articles, websites, blogs, books, slides, and more. Supports Python, R, Julia, and JavaScript.

Title Length6 chars

Recommended: 50-60 chars (~40px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    414 URLs

    robots.txt

    1 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    D46/100
    Bot Access
    20/25
    Machine Read.
    16/25
    Schema Data
    0/25
    Citation
    10/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    code blocksnavheader/footer
    Text ratio:6%
    Words:726
    Token eff.:Optimal
    Sections/1K:11
    Depth:3/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary113w
    Descriptive Headingsavg 4.1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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
    74/100
    12
    Passed
    5
    Critical
    2
    Warnings
    Images & Alt Text
    18/20
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    2/15
    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.
    37/100
    F
    693 mg
    CO₂e / view
    6.7 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    792 mg
    vs
    Returning (cached)
    396 mg
    Annual (10K/mo)
    83.2 kg
    Emission Segments
    Data Center
    34 mg
    Network
    204 mg
    Device
    455 mg
    Resource Breakdown
    JavaScript
    101.4 KB
    Images
    1.1 MB
    CSS
    316.0 KB
    HTML
    13.1 KB
    Other
    5.2 MB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    76%Good
    Static / Informational

    HTTPS

    No WAF

    87d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    03.05.2026

    Valid Until

    01.08.2026

    Subject Alternative Names (2)

    *.quarto.orgquarto.org

    SHA-256 Fingerprint

    FA:74:49:F6:7E:86:28:CC:51:85:70:06:9D:CF:DC:44:3C:D2:8A:06...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    85
    cache-control
    🟡 0s(public,max-age=0,must-revalidate)
    cache-status
    "Netlify Edge"; hit
    content-encoding
    ⚡ Brotli(br)
    content-length
    13073
    Good Warning Issue

    Email Infrastructure

    ImprovMX

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (2)

    mx1.improvmx.com
    mx1.improvmx.com

    Domain Information

    quarto.org

    Domain Age
    20y 8m

    Created

    15.08.2005

    Expires

    15.08.2026

    Last Updated

    29.09.2025

    Registrar

    GoDaddy.com, 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.
    C
    64/100
    Mobile Friendly2 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=1.0, user-scalable=yes
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    -apple-system

    WCAG AA
    80/100
    Readability
    /30
    23/30

    19px · LH 1.50

    Hierarchy
    /20
    15/20

    2.27x ratio

    WCAG
    /25
    21/25

    4.7:1 min contrast

    Performance
    /25
    21/25

    System fonts

    Heading Font

    -apple-system

    Sans43px

    Body Font

    -apple-system

    Sans19px

    Contrast Ratio

    4.7:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~34 CPL

    Narrow lines
    43px
    h1
    25px
    h3
    19px
    p

    ✅ Excellent readability: 19px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 35/100. Simplify sentences for wider reach.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.7:1).

    ⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 2.3x larger than body text.

    Fluid TypeFlesch 35

    Color Palette

    3 unique colors
    Light
    #f0f5f9
    Primary· 88.2%
    #c1c9cf
    Secondary· 6.4%
    #6f7d8a
    Secondary· 5.7%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    PlausibleSMB
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    20 Resources

    14
    Scripts
    6
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    site_libs(12)plausible.io(1)cdn.jsdelivr.net(1)

    Website Identity

    quarto.org

    20 years old
    Location detected: 🇨🇦 Canadavia ip
    GoDaddy.com, LLC📧 ImprovMXen

    Social Profiles

    GitHubBluesky

    Sponsored

    Last analyzed: 05 May 2026 at 15:29

    Historical Analysis & Change Tracking