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planethunters.org

https://planethunters.org· First analyzed 22 May 2026· Updated 22 May 2026
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planethunters.org
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Sponsored

Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

20.241.225.41

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Boydton, United States

ASN

AS8075

Organization

Microsoft Azure Cloud (eastus)

CDN

CDN

Nameservers

ns2-07.azure-dns.net.ns3-07.azure-dns.org.ns4-07.azure-dns.info.ns1-07.azure-dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
358 ms10%
Speed Index
465 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
794 KB
65 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Next.js
Infrastructure
Hosting
Microsoft Azure
CDN
CDN

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

SEO Analysis

C63/100
17
7
0
Meta Tags11/15
Content8/12
Headings6/8
Technical13/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
P
planethunters.orgplanethunters.org

Planet Hunters TESS | Zooniverse - People-powered research

Join the Search for Undiscovered Worlds

Title Length58 chars

Recommended: 50-60 chars (~353px / 580px)

Description Length39 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    2 rules

    Allows all crawlers

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    F37/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    10/25

    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:291
    Token eff.:Too Short
    Sections/1K:17.2
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary12w
    Descriptive Headingsavg 3.8w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    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.
    A
    84/100
    13
    Passed
    4
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    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
    9/15
    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.
    58/100
    B
    80 mg
    CO₂e / view
    794.3 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    92 mg
    vs
    Returning (cached)
    46 mg
    Annual (10K/mo)
    9.6 kg
    Emission Segments
    Data Center
    4 mg
    Network
    24 mg
    Device
    53 mg
    Resource Breakdown
    JavaScript
    745.1 KB
    Images
    1.5 KB
    CSS
    1.5 KB
    HTML
    25.1 KB
    Other
    21.1 KB
    Green Hosting Verified
    Microsoft Azure
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    81%Very Good
    Static / Informational

    HTTPS

    No WAF

    141d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    10.04.2026

    Valid Until

    10.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.zooniverse.org

    SHA-256 Fingerprint

    9B:A1:5F:9E:5A:66:8C:D6:80:50:6E:65:2B:DA:95:05:5E:ED:16:85...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    ⚪ Custom(s-maxage=60, stale-while-revalidate=31535940)
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    frame-ancestors 'self'
    content-type
    text/html; charset=utf-8
    date
    Fri, 22 May 2026 19:00:35 GMT
    etag
    W/"10clnt59kvk1x1u"
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    planethunters.org

    Domain Age
    15y 9m

    Created

    11.08.2010

    Expires

    11.08.2026

    Last Updated

    17.07.2025

    Registrar

    NameCheap, 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
    69/100
    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

    Arial

    WCAG Partial
    71/100
    Readability
    /30
    25/30

    16px · LH 1.50

    Hierarchy
    /20
    17/20

    2x ratio

    WCAG
    /25
    16/25

    1.12:1 min contrast

    Performance
    /25
    13/25

    System fonts

    Heading Font

    Arial

    Sans32px

    Body Font

    Arial

    Sans16px

    Contrast Ratio

    1.12:1

    24 issues

    Reading Comfort

    ~33 CPL

    Narrow lines
    32px
    h1
    14px
    h2
    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 39/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 1.1:1).

    ⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    Flesch 39

    Color Palette

    8 unique colors
    5:1 AA Light
    #ffffff
    Background· 27.700000000000003%
    #7e6b6b
    Secondary· 6.7%
    #020408
    Primary· 20.1%
    #2b2730
    Secondary· 20.1%
    #514247
    Text· 5.7%
    #cebd86
    Secondary· 3.2%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    21 Resources

    20
    Scripts
    1
    Styles
    3
    Async
    17
    Defer

    Top Script Sources

    local(17)googletagmanager.com(2)google-analytics.com(1)

    Website Identity

    planethunters.org

    15 years old
    Location detected: 🇺🇸 United Statesvia ip
    NameCheap, Inc.en

    Sponsored

    Last analyzed: 22 May 2026 at 19:00

    Historical Analysis & Change Tracking