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darwinproject.ac.uk

https://darwinproject.ac.uk· First analyzed 06 May 2026· Updated 06 May 2026
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darwinproject.ac.uk
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Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

13.33.235.105

Site Location

🇬🇧 United Kingdomvia tld

Server Location

🇺🇸 New York, United States

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

AmazonS3

CDN

CloudFront

Nameservers

ns-1427.awsdns-50.org.ns-1564.awsdns-03.co.uk.ns-241.awsdns-30.com.ns-959.awsdns-55.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
605 ms10%
Speed Index
786 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
41.7 MB
136 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupalv7

Technology Stack

11 Technologies Detected

Libraries

2
jQuery
jQuery UI

Icon Libraries

2
Font AwesomeMaterial Icons

Fonts

2
Google FontsAdobe Fonts (Typekit)

Analytics

2
Google Analytics
Facebook Pixel

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

B74/100
19
6
0
Meta Tags10/15
Content11/12
Headings8/8
Technical20/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
D
darwinproject.ac.ukdarwinproject.ac.uk

Darwin Correspondence Project |

Read and search the full texts of more than 12,000 of Charles Darwin’s letters, and find information on 3,000 more. Discover complete transcripts of all know...

Description truncated.
Title Length31 chars

Recommended: 50-60 chars (~190px / 580px)

Description Length213 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    76 rules

    Local SEO

    Local Search Readiness

    16/100
    Poor
    5 10 2

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

    Sponsored

    AI & LLM Readiness

    D44/100
    Bot Access
    20/25
    Machine Read.
    5/25
    Schema Data
    3/25
    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
    Text ratio:12%
    Words:3,728
    Token eff.:Poor Structure

    Structured Data

    1 JSON-LD
    WebSitemicrodataBreadcrumbListSearchActionmicrodata

    Citation Readiness

    Opening Summary61w
    Descriptive Headingsavg 4.5w
    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
    78/100
    14
    Passed
    4
    Critical
    1
    Warnings
    Images & Alt Text
    18/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    14/15
    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
    11/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •Accessibility recommendation preview...
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    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.
    21/100
    F
    4.31 g
    CO₂e / view
    41.7 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    4.93 g
    vs
    Returning (cached)
    2.46 g
    Annual (10K/mo)
    517.4 kg
    Emission Segments
    Data Center
    211 mg
    Network
    1.27 g
    Device
    2.83 g
    Resource Breakdown
    JavaScript
    942.2 KB
    Images
    40.2 MB
    CSS
    414.5 KB
    Fonts
    641 B
    HTML
    157.2 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    8 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    26%Critical
    Interactive

    HTTPS

    WAF

    206d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    30.10.2025

    Valid Until

    28.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    darwinproject.ac.uk*.darwinproject.ac.uk

    SHA-256 Fingerprint

    10:75:C8:EE:81:48:6C:BB:6F:6D:26:33:EE:EC:12:44:AC:C0:3C:76...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    content-length
    160719
    content-type
    text/html
    date
    Wed, 06 May 2026 00:44:51 GMT
    etag
    "1f0cb5decbb310c42b8376b8ca29e15a"
    last-modified
    Wed, 11 Dec 2024 20:46:05 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    darwinproject.ac.uk

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    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
    63/100
    Mobile Friendly1 breakpoint
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
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    Typography & Readability

    myriad + verdana

    WCAG Partial
    62/100
    Readability
    /30
    19/30

    12px · LH 1.50

    Hierarchy
    /20
    16/20

    3.33x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    1:1 min contrast

    Performance
    /25
    12/25

    3 fonts

    Heading Font

    myriad

    Sans40px

    Body Font

    verdana

    Sans12px

    Contrast Ratio

    1:1

    4 issues

    Reading Comfort

    ~38 CPL

    Narrow lines
    40px
    h1
    19px
    h2
    17px
    h3
    12px
    p

    ❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

    ⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 3.3x larger than body text.

    ⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

    GGoogle FontsAAdobe FontsBuy on MyFonts

    Color Palette

    10 unique colors
    21:1 AAA Light
    #ffffff
    Background· 34.9%
    #000000
    Text· 14.5%
    #314520
    Primary· 13%
    #bdb5a2
    Secondary· 6.5%
    #24201d
    Text· 6.4%
    #5e6235
    Secondary· 5.7%
    #848f74
    Secondary· 4.9%
    #d7ded7
    Secondary· 3.5%

    Business & Marketing Stack

    4 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    2
    Twitter/X WidgetsFree
    Facebook SDKFree

    Social widgets and sharing tools

    2

    Categories

    4

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    28 Resources

    20
    Scripts
    8
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    local(15)platform.twitter.com(2)cdnjs.cloudflare.com(2)use.typekit.net(1)

    Website Identity

    darwinproject.ac.uk

    Location detected: 🇬🇧 United Kingdomvia tld
    en

    Sponsored

    Last analyzed: 06 May 2026 at 00:45

    Historical Analysis & Change Tracking