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readthedocs.com

https://readthedocs.com· First analyzed 25 May 2026· Updated 25 May 2026
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readthedocs.com
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Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.18.10.239

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tegan.ns.cloudflare.com.ivan.ns.cloudflare.com.

Performance

97

Core Web Vitals

Weight

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

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Pelican
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

CDN

1
Cloudflare

SEO Analysis

B72/100
20
7
0
Meta Tags12/15
Content10/12
Headings8/8
Technical15/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
R
readthedocs.comreadthedocs.com

Full featured documentation deployment platform - Read the Docs

Read the Docs is a documentation building and hosting platform aimed at helping developers creating documentation from code with versioned documentation, int...

Description truncated.
Title Length63 chars

Recommended: 50-60 chars (~388px / 580px)

Description Length204 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    1 URLs

    robots.txt

    3 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

    D48/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    0/25
    Citation
    15/25

    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
    blockquotescode blocks
    Text ratio:10%
    Words:740
    Token eff.:Optimal
    Sections/1K:17.6
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary26w
    Descriptive Headingsavg 5.1w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (6)
    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
    81/100
    11
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    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
    4/15
    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.
    62/100
    B
    119 mg
    CO₂e / view
    1.2 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    136 mg
    vs
    Returning (cached)
    68 mg
    Annual (10K/mo)
    14.3 kg
    Emission Segments
    Data Center
    6 mg
    Network
    35 mg
    Device
    78 mg
    Resource Breakdown
    JavaScript
    255.3 KB
    Images
    65.7 KB
    CSS
    849.0 KB
    HTML
    6.7 KB
    Other
    4.2 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    44%Poor
    Interactive

    HTTPS

    WAF

    71d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    07.05.2026

    Valid Until

    05.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    about.readthedocs.com

    SHA-256 Fingerprint

    F9:41:D7:DA:44:8B:5B:B2:AC:23:65:C5:86:54:B3:3F:F5:99:C1:9A...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-methods
    HEAD, OPTIONS, GET
    access-control-allow-origin
    *
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 1200s(max-age=1200)
    cdn-cache-control
    public
    cf-cache-status
    HIT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (3)

    alt1.aspmx.l.google.com
    aspmx2.googlemail.com
    aspmx.l.google.com

    Domain Information

    readthedocs.com

    Domain Age
    15y 9m

    Created

    12.08.2010

    Expires

    12.08.2029

    Last Updated

    19.06.2025

    Registrar

    Cloudflare, Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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
    66/100
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Lato

    WCAG Partial
    70/100
    Readability
    /30
    24/30

    16px · LH 1.50

    Hierarchy
    /20
    18/20

    2.25x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    3.18:1 min contrast

    Performance
    /25
    11/25

    1 font · 4 req

    Heading Font

    Lato

    Sans36px

    Body Font

    Lato

    Sans16px

    Contrast Ratio

    3.18:1

    9 issues

    Reading Comfort

    ~34 CPL

    Narrow lines
    36px
    h1
    32px
    h2
    32px
    h3
    14px
    h4
    16px
    p

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

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

    ⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 3.2:1).

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

    ✅ Strong hierarchy: Headlines are 2.2x larger than body text.

    Buy on MyFontsFlesch 49

    Color Palette

    10 unique colors
    Light
    #ffffff
    Background· 63.800000000000004%
    #6335c9
    Primary· 10.8%
    #0993af
    Primary· 10.3%
    #b8bc86
    Secondary· 3.6%
    #9073ae
    Secondary· 2.9%
    #ecefeb
    Secondary· 2.5%
    #3d2674
    Accent· 2.4%
    #39a7bc
    Accent· 2.2%

    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

    Ad Networks

    EthicalAds

    Sponsored

    Scripts & Styles

    5 Resources

    4
    Scripts
    1
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    about.readthedocs.com(2)kit.fontawesome.com(1)local(1)

    Website Identity

    readthedocs.com

    15 years old
    Location detected: 🇨🇦 Canadavia ip
    Cloudflare, Inc.📧 Google Workspaceen

    Social Profiles

    X (Twitter)GitHub

    Sponsored

    Last analyzed: 25 May 2026 at 05:08

    Historical Analysis & Change Tracking