StackOptic
Back to Search
linnean.org favicon

linnean.org

https://linnean.org· First analyzed 12 May 2026· Updated 12 May 2026
Export
linnean.org
Desktop screenshot of linnean.org
Mobile screenshot of linnean.org
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

34.255.71.99

Site Location

🇬🇧 Piccadilly, United Kingdomvia schema

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS EC2 (eu-west-1)

Nameservers

ns-1026.awsdns-00.org.ns-166.awsdns-20.com.ns-1793.awsdns-32.co.uk.ns-938.awsdns-53.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
292 ms10%
Speed Index
380 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
307 KB
42 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Framework
Alpine.js
Styling
Tailwind CSS
Infrastructure
Hosting
Amazon Web Services (AWS)

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Email Marketing

1
Mailchimp

SEO Analysis

A86/100
26
3
0
Meta Tags15/15
Content8/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness4/4
Mobile4/4
Indexability3/3
L
linnean.orglinnean.org

The Linnean Society | Communicating Nature Since 1788

The Linnean Society of London is working towards a world where nature is understood, valued and protected. We're the world's oldest active biological society.

Title Length53 chars

Recommended: 50-60 chars (~318px / 580px)

Description Length158 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    8 URLs

    8 sub-sitemaps

    robots.txt

    3 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    56/100
    Fair
    15 8

    Sponsored

    AI & LLM Readiness

    D48/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    7/25
    Citation
    16/25

    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
    navheader/footer
    Text ratio:3%
    Words:287
    Token eff.:Too Short
    Sections/1K:45.3
    Depth:2/5

    Structured Data

    4 JSON-LD
    Person×1.3(min)Organization×1.1(min)LocalBusiness×1.1BreadcrumbList
    sameAs entity links

    Citation Readiness

    Opening Summary10w
    Descriptive Headingsavg 2.8w
    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.
    B
    76/100
    12
    Passed
    2
    Critical
    0
    Warnings
    Images & Alt Text
    10/20
    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
    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
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    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.
    79/100
    A+
    31 mg
    CO₂e / view
    307.4 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    36 mg
    vs
    Returning (cached)
    18 mg
    Annual (10K/mo)
    3.7 kg
    Emission Segments
    Data Center
    2 mg
    Network
    9 mg
    Device
    20 mg
    Resource Breakdown
    JavaScript
    142.5 KB
    Images
    108.8 KB
    CSS
    42.0 KB
    HTML
    14.1 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    No WAF

    40d

    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

    24.03.2026

    Valid Until

    22.06.2026

    Subject Alternative Names (20)

    a-r-c-s.coa6partnership.orgarchive.charitybank.orgbelfast.woodfordmedical.comboisdale.co.ukcambridge.woodfordmedical.comchelmsfordcatholic.co.ukclimateanalytics.org+12 more

    SHA-256 Fingerprint

    83:E4:E0:BA:88:21:44:02:A4:74:41:B4:35:F9:BB:C6:8E:D7:DD:31...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    3022
    cache-control
    🟡 0s(public, s-maxage=31536000, max-age=0)
    content-encoding
    📦 Gzip(gzip)
    content-length
    14111
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    100

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (2)

    mx1-eu1.ppe-hosted.com
    mx2-eu1.ppe-hosted.com

    Domain Information

    linnean.org

    Domain Age
    26y 6m

    Created

    21.10.1999

    Expires

    21.10.2026

    Last Updated

    09.10.2025

    Registrar

    eNom, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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.
    A
    80/100
    Mobile Friendly26 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, minimum-scale=1
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Georgia + sans-serif

    WCAG Partial
    60/100
    Readability
    /30
    15/30

    14px · LH 1.75

    Hierarchy
    /20
    11/20

    1.14x ratio · ✓ H1→H6

    WCAG
    /25
    14/25

    1.14:1 min contrast

    Performance
    /25
    20/25

    2 fonts · 1 req

    Heading Font

    Georgia

    Serif16px

    Body Font

    sans-serif

    Sans14px

    Contrast Ratio

    1.14:1

    6 issues

    Reading Comfort

    ~44 CPL

    Narrow lines
    16px
    h1
    30px
    h2
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.1:1).

    ✅ 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.

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

    GGoogle FontsBuy on MyFontsFlesch 39

    Color Palette

    8 unique colors
    4.23:1 AA Large Light
    #ffffff
    Primary· 40.1%
    #7b7a84
    Other· 4%
    #00293b
    Accent· 22%
    #e6e3de
    Secondary· 17.6%
    #b4c6ce
    Secondary· 6.8%
    #4d1d3b
    Secondary· 4.5%
    #1d3b51
    Secondary· 2.9%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Marketing Automation

    1
    MailchimpSMB

    Email marketing and automation platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    3

    Categories

    4

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    15 Resources

    9
    Scripts
    6
    Styles
    5
    Async
    0
    Defer

    Top Script Sources

    ia2-tls.edcdn.com(3)connect.facebook.net(2)googletagmanager.com(2)google-analytics.com(1)kit.fontawesome.com(1)

    Website Identity

    The Linnean Society of London

    The Linnean Society of London

    LocalBusiness

    The Linnean Society of London is the world’s oldest active society devoted to natural history. Founded in 1788 by Sir James Edward Smith (1759–1828), who was its first President, the Society takes its name from the Swedish naturalist Carl Linnaeus (1707–1778) whose botanical, zoological and library

    library@linnean.org
    +44 (0)20 7434 4479
    www.linnean.org/
    26 years old

    Burlington House, Piccadilly

    W1J 0BF, Piccadilly, London

    United Kingdom

    Location detected: 🇬🇧 United Kingdom, Piccadillyvia schema
    eNom, LLCenEst. 1788

    Sponsored

    Last analyzed: 12 May 2026 at 16:34

    Historical Analysis & Change Tracking