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oreillystatic.com

https://oreillystatic.com· First analyzed 02 Jun 2026· Updated 02 Jun 2026
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oreillystatic.com
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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

34.169.83.167

Site Location

🇺🇸 Sebastopol, United Statesvia schema_nap

Server Location

🇺🇸 The Dalles, United States

ASN

AS396982

Organization

Google Cloud (us-west1)

Server

Apache

CDN

Akamai

WAF

Akamai

Nameservers

a3-67.akam.net.a13-64.akam.net.a16-65.akam.net.a1-225.akam.net.+2 more

Performance

97

Core Web Vitals

Weight

First Contentful Paint
982 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
599 KB
79 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv3.3.1

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Other

1
VWO

Web Servers

1
Apache

SEO Analysis

B74/100
23
6
0
Meta Tags14/15
Content8/12
Headings8/8
Technical17/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
O
oreillystatic.comoreillystatic.com

O'Reilly Media - Technology and Business Training

Build the skills your teams need. Give them the O'Reilly learning platform and equip them with the resources that drive business outcomes.

Title Length49 chars

Recommended: 50-60 chars (~289px / 580px)

Description Length138 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    5 URLs

    5 sub-sitemaps

    robots.txt

    89 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    26/100
    Needs Work
    7 13 1

    Sponsored

    AI & LLM Readiness

    D49/100
    Bot Access
    23/25
    Machine Read.
    14/25
    Schema Data
    4/25
    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.txtvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:2%
    Words:1,197
    Token eff.:Optimal
    Depth:2/5

    Structured Data

    1 JSON-LD
    Person×1.3
    sameAs entity links

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1.9w
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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
    76/100
    13
    Passed
    1
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    5/15
    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
    15/15
    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.
    70/100
    A
    61 mg
    CO₂e / view
    599.0 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    69 mg
    vs
    Returning (cached)
    35 mg
    Annual (10K/mo)
    7.3 kg
    Emission Segments
    Data Center
    3 mg
    Network
    18 mg
    Device
    40 mg
    Resource Breakdown
    JavaScript
    344.3 KB
    Images
    115.4 KB
    HTML
    39.5 KB
    Other
    99.8 KB
    Green Hosting Verified
    Google Cloud
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    WAF

    163d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    28.04.2026

    Valid Until

    12.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (20)

    shop.oreilly.comakamaicovers.oreilly.comanz.oreilly.reviewapi.oreilly.comapi.oreilly.reviewconferences.oreilly.comgo.oreilly.comgo.oreilly.review+12 more

    SHA-256 Fingerprint

    F5:31:9B:BD:9F:B4:98:0D:C5:95:73:03:C6:26:EA:23:78:0C:5F:10...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    cache-control
    🟡 3 Hours(max-age=12028)
    content-encoding
    📦 Gzip(gzip)
    content-length
    40145
    content-security-policy
    default-src https://www.oreilly.com/TlAPHwRy00jSnVQ6rg/cXhiD...
    content-type
    text/html
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    oreillystatic.com

    Domain Age
    13y 11m

    Created

    14.06.2012

    Expires

    14.06.2027

    Last Updated

    18.05.2026

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    CookieLaw

    Cookie Consent Banner
    CookieLaw
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: CookieLaw
    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.
    B
    78/100
    Mobile Friendly49 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Arial + Helvetica

    WCAG AA
    72/100
    Readability
    /30
    23/30

    20px · LH 1.50

    Hierarchy
    /20
    16/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    19/25

    4.6:1 min contrast

    Performance
    /25
    14/25

    System fonts

    Heading Font

    Arial

    Sans60px

    Body Font

    Helvetica

    Sans20px

    Contrast Ratio

    4.6:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~38 CPL

    Narrow lines
    60px
    h1
    40px
    h2
    18px
    h3
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

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

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    Flesch 37

    Color Palette

    11 unique colors
    3.93:1 AA Large Light
    #ffffff
    Text· 10.3%
    #817e93
    Secondary· 5.5%
    #151a2d
    Primary· 24.1%
    #2a303d
    Secondary· 23.1%
    #4d3186
    Secondary· 7.2%
    #202f58
    Secondary· 6.6%
    #344d93
    Secondary· 5.6%
    #2e1f4c
    Secondary· 4.5%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    OneTrustEnterprise

    Cookie consent and privacy compliance tools

    A/B Testing & Optimization

    1
    VWO (Visual Website Optimizer)Mid-Market

    Experimentation and conversion optimization

    3

    Categories

    4

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    14 Resources

    10
    Scripts
    4
    Styles
    4
    Async
    2
    Defer

    Top Script Sources

    cdn.oreillystatic.com(3)local(3)googletagmanager.com(2)cdn.cookielaw.org(1)cdnapisec.kaltura.com(1)

    Website Identity

    O'Reilly Media

    O'Reilly Media

    Corporation

    The O'Reilly learning platform is a skill-building platform that equips individuals and teams with the resources that drive business outcomes. We help tech teams stay ahead. O'Reilly empowers professionals, teams, enterprises, academic institutions, and government organizations to forge a brighter f

    www.oreilly.com/
    13 years old

    1005 Gravenstein Highway North, Sebastopol

    95472, Sebastopol, CA

    US

    Location detected: 🇺🇸 United States, Sebastopolvia schema_nap
    GoDaddy.com, LLCenEst. 1978

    Social Profiles

    LinkedInYouTube

    Sponsored

    Last analyzed: 02 Jun 2026 at 07:56

    Historical Analysis & Change Tracking