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algaebase.org

https://algaebase.org· First analyzed 07 May 2026· Updated 07 May 2026
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algaebase.org
Desktop screenshot of algaebase.org
Mobile screenshot of algaebase.org
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

54.76.88.100

Site Location

🇮🇪 Irelandvia ip

Server Location

🇮🇪 Dublin, Ireland

ASN

AS16509

Organization

AWS EC2 (eu-west-1)

Server

Apache

Nameservers

ns-699.awsdns-23.net.ns-1251.awsdns-28.org.ns-1952.awsdns-52.co.uk.ns-47.awsdns-05.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
768 ms10%
Speed Index
998 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
610 KB
60 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

10 Technologies Detected

Libraries

2
jQueryv3.4.1
jQuery UI

Analytics

2
Google Analytics
Google Analytics 4

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apachev2.4.41

SEO Analysis

D53/100
13
10
0
Meta Tags8/15
Content9/12
Headings5/8
Technical10/21
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
A
algaebase.orgalgaebase.org

AlgaeBase :: Listing the World’s Algae

Algaebase :: Listing the World's Algae

Title Length38 chars

Recommended: 50-60 chars (~223px / 580px)

Description Length38 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    7/100
    Poor
    2 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

    D40/100
    Bot Access
    20/25
    Machine Read.
    9/25
    Schema Data
    0/25
    Citation
    11/25

    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
    nav
    Text ratio:5%
    Words:354
    Token eff.:Optimal
    Sections/1K:16.9
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary49w
    Descriptive Headingsavg 3.3w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    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.
    C
    69/100
    12
    Passed
    3
    Critical
    3
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    13/20
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    7/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 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.
    57/100
    A
    62 mg
    CO₂e / view
    609.8 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    70 mg
    vs
    Returning (cached)
    35 mg
    Annual (10K/mo)
    7.4 kg
    Emission Segments
    Data Center
    3 mg
    Network
    18 mg
    Device
    41 mg
    Resource Breakdown
    JavaScript
    271.5 KB
    Images
    286.3 KB
    CSS
    42.0 KB
    Fonts
    2.9 KB
    HTML
    7.1 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    185d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/2

    Valid From

    10.10.2025

    Valid Until

    08.11.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    www.algaebase.orgalgaebase.org

    SHA-256 Fingerprint

    5D:24:E4:69:3F:7B:AD:AF:FA:49:6A:F8:B1:35:CF:B0:16:AB:F8:7B...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-length
    6935
    content-type
    text/html; charset=UTF-8
    date
    Thu, 07 May 2026 08:16:45 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    65

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (7)

    alt1.aspmx.l.google.com.algaebase.org
    alt2.aspmx.l.google.com.algaebase.org
    aspmx2.googlemail.com.algaebase.org
    aspmx3.googlemail.com.algaebase.org

    +3 more

    Domain Information

    algaebase.org

    Domain Age
    25y 1m

    Created

    05.04.2001

    Expires

    05.04.2027

    Last Updated

    05.05.2026

    Registrar

    Amazon Registrar, Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot

    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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    IBM Plex Serif

    WCAG Partial
    62/100
    Readability
    /30
    21/30

    16px · LH --

    Hierarchy
    /20
    10/20

    1.8x ratio

    WCAG
    /25
    13/25

    1:1 min contrast

    Performance
    /25
    18/25

    1 font · 2 req

    Heading Font

    IBM Plex Serif

    Serif29px

    Body Font

    IBM Plex Serif

    Serif16px

    Contrast Ratio

    1:1

    4 issues

    Reading Comfort

    Single Font Family

    left aligned
    29px
    h1
    24px
    h3
    18px
    h4
    16px
    p

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

    ❌ Very complex text: Flesch score 19/100. Consider shorter sentences and simpler words.

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

    ❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

    ❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

    ✅ Lean font stack: 1 font families keeps load times fast.

    GGoogle FontsBuy on MyFontsFlesch 19

    Color Palette

    10 unique colors
    Light
    #ffffff
    Background· 35.7%
    #c08d5e
    Secondary· 7.3%
    #040101
    Primary· 7.2%
    #8c5a43
    Secondary· 5.9%
    #87997e
    Secondary· 5.9%
    #3c7b33
    Secondary· 5.5%
    #5e2b1f
    Secondary· 5.4%
    #201310
    Secondary· 5.4%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Twitter/X WidgetsFree

    Social widgets and sharing tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    28 Resources

    20
    Scripts
    8
    Styles
    3
    Async
    0
    Defer

    Top Script Sources

    local(14)googletagmanager.com(2)code.jquery.com(2)google-analytics.com(1)kit.fontawesome.com(1)

    Website Identity

    algaebase.org

    25 years old
    Location detected: 🇮🇪 Irelandvia ip
    Amazon Registrar, Inc.📧 Google Workspaceen

    Social Profiles

    X (Twitter)

    Sponsored

    Last analyzed: 07 May 2026 at 08:17

    Historical Analysis & Change Tracking