astronomerswithoutborders.org

https://astronomerswithoutborders.org· First analyzed 14 May 2026· Updated 14 May 2026

Export

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

34.225.242.50

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

CDN

Cloudflare

WAF

Cloudflare

Nameservers

eugene.ns.cloudflare.com.rachel.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.7 s10%

Speed Index

3.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

175 KB

118 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Technology Stack

12 Technologies Detected

Libraries

CSS Frameworks

Analytics

UI Components

Icon Libraries

Fonts

Tag Managers

Customer Support

CDN

SEO Analysis

D54/100

Meta Tags8/15

Content10/12

Headings3/8

Technical14/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

astronomerswithoutborders.orgastronomerswithoutborders.org

Home - Astronomers Without Borders

The site home page

Title Length34 chars

Recommended: 50-60 chars (~217px / 580px)

Description Length18 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (6/11) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,314 URLs

robots.txt

21 rules

Local SEO

Local Search Readiness

11/100

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

D46/100

Bot Access

20/25

Machine Read.

15/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:3%

Words:513

Token eff.:Optimal

Sections/1K:27.3

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary20w

Descriptive Headingsavg 4w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

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

10/15

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.

62/100

A+

18 mg

CO₂e / view

174.8 KB

Page Weight

95%

Cleaner Than

New Visitor

20 mg

Returning (cached)

10 mg

Annual (10K/mo)

2.1 kg

Emission Segments

Data Center

<0.001 g

Network

5 mg

Device

12 mg

Resource Breakdown

JavaScript

71.5 KB

CSS

2.0 KB

Fonts

2.9 KB

HTML

31.6 KB

Other

66.7 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

76d

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/1.1

Valid From

01.05.2026

Valid Until

30.07.2026

Subject Alternative Names (1)

astronomerswithoutborders.org

SHA-256 Fingerprint

CA:09:25:EB:86:38:67:BD:13:33:A7:45:B8:D2:C4:40:52:9D:16:12...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-security-policy-report-only

img-src https://higherlogicdownload.s3.amazonaws.com/AWB/ ht...

content-type

text/html; charset=utf-8

correlation-id

a11d5225-1888-41cd-8b28-2e9cbdb2b2c8

date

Thu, 14 May 2026 17:50:36 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (3)

alt3.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx.l.google.com

Domain Information

astronomerswithoutborders.org

Domain Age

19y 8m

Created

16.09.2006

Expires

16.09.2026

Last Updated

19.07.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG Partial

68/100

Readability

/30

26/30

16px · LH 1.40

Hierarchy

/20

8/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

1:1

10 issues

Reading Comfort

~34 CPL

Narrow lines

30px

20px

16px

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

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

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle FontsFlesch 48

Color Palette

7 unique colors

18.51:1 AAA Light

#ffffff

Background· 21.900000000000002%

#141316

Text· 16.6%

#83544f

Primary· 13.9%

#612b30

Secondary· 13.7%

#162843

Accent· 7.6%

#cbc1bb

Secondary· 6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

d2x5ku95bkycr3.cloudfront.net(6)d3uf7shreuzboy.cloudfront.net(3)cdnjs.cloudflare.com(3)ajax.aspnetcdn.com(3)local(2)

Website Identity

astronomerswithoutborders.org

19 years old

Location detected: 🇺🇸 United Statesvia ip

Gandi SAS📧 Google Workspaceen

Sponsored

Last analyzed: 14 May 2026 at 17:50

Historical Analysis & Change Tracking