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opensats.org

https://opensats.org· First analyzed 08 May 2026· Updated 08 May 2026
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opensats.org
Desktop screenshot of opensats.org
Mobile screenshot of opensats.org
Mobile

Sponsored

Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

dns2.registrar-servers.com.dns1.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
468 ms10%
Speed Index
608 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.1 MB
67 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Next.js
Styling
Tailwind CSS
CMS
WooCommerce
Infrastructure
Platform
Vercel
CDN
Vercel Image

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Analytics

1
Fathom Analytics

Platforms

1
Vercel

SEO Analysis

C67/100
21
7
0
Meta Tags7/15
Content7/12
Headings6/8
Technical17/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
O
opensats.orgopensats.org

OpenSats

OpenSats is a 501(c)(3) public charity that aims to support and maintain a sustainable ecosystem of funding for free and open-source projects and contributor...

Description truncated.
Title Length8 chars

Recommended: 50-60 chars (~52px / 580px)

Description Length236 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    152 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    8/100
    Poor
    3 12 2

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

    Sponsored

    AI & LLM Readiness

    D49/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    0/25
    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:1%
    Words:439
    Token eff.:Optimal
    Sections/1K:20.5
    Depth:2/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary21w
    Descriptive Headingsavg 2.9w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (6)
    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
    83/100
    14
    Passed
    2
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    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
    10/15
    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
    11/15
    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.
    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.
    57/100
    D
    216 mg
    CO₂e / view
    2.1 MB
    Page Weight
    50%
    Cleaner Than
    New Visitor
    247 mg
    vs
    Returning (cached)
    123 mg
    Annual (10K/mo)
    25.9 kg
    Emission Segments
    Data Center
    11 mg
    Network
    63 mg
    Device
    142 mg
    Resource Breakdown
    JavaScript
    929.4 KB
    Images
    152.6 KB
    CSS
    466.5 KB
    HTML
    55.1 KB
    Other
    532.6 KB
    Green Hosting Verified
    Vercel
    Provider Match
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    No WAF

    32d

    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

    11.03.2026

    Valid Until

    09.06.2026

    Subject Alternative Names (1)

    opensats.org

    SHA-256 Fingerprint

    F3:AD:03:08:9F:BC:AB:0D:9F:17:67:90:EF:3E:18:EC:22:5F:74:87...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    18598
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    content-disposition
    inline
    content-encoding
    ⚡ Brotli(br)
    content-security-policy
    default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe...
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    93

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (5)

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

    +1 more

    Domain Information

    opensats.org

    Domain Age
    6 years

    Created

    29.04.2020

    Expires

    29.04.2030

    Last Updated

    01.07.2023

    Registrar

    NameCheap, Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked
    Data Protection Officer mentioned

    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
    74/100
    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

    Inter

    WCAG Partial
    81/100
    Readability
    /30
    24/30

    18px · LH 1.56

    Hierarchy
    /20
    18/20

    3.33x ratio

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    22/25

    1 font · 1 req

    Heading Font

    Inter

    Sans60px

    Body Font

    Inter

    Sans18px

    Contrast Ratio

    1:1

    15 issues

    Reading Comfort

    ~33 CPL

    Narrow lines
    60px
    h1
    24px
    h2
    18px
    p

    ✅ Excellent readability: 18px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.56 ratio (ideal range 1.4–1.6).

    ⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.0:1).

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

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

    Buy on MyFontsVariable FontsFlesch 49

    Color Palette

    9 unique colors
    2.01:1 Fail Light
    #ffffff
    Primary· 87.50000000000001%
    #b7b7b7
    Other· 1.7%
    #f8761d
    Primary· 2%
    #54341e
    Secondary· 1.8%
    #eae5df
    Secondary· 1.8%
    #dfd7cf
    Secondary· 1.8%
    #ddc7b5
    Secondary· 0.9%
    #ae9d91
    Secondary· 0.8%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    2
    FathomSMB
    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

    22 Resources

    20
    Scripts
    2
    Styles
    1
    Async
    15
    Defer

    Top Script Sources

    local(19)cdn.usefathom.com(1)

    Website Identity

    opensats.org

    support@opensats.org
    6 years old
    Location detected: 🇺🇸 United Statesvia ip
    NameCheap, Inc.📧 Google Workspaceen-us

    Social Profiles

    X (Twitter)GitHub

    Sponsored

    Last analyzed: 08 May 2026 at 10:22

    Historical Analysis & Change Tracking