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riverkeeper.org

https://riverkeeper.org· First analyzed 10 May 2026· Updated 10 May 2026
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riverkeeper.org
Desktop screenshot of riverkeeper.org
Mobile screenshot of riverkeeper.org
Mobile

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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

CDN

Cloudflare

WAF

Cloudflare

Nameservers

joel.ns.cloudflare.com.ariadne.ns.cloudflare.com.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.6 MB
85 requests

Image Optimization

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

Architecture Stack

JAMstack
🔀 Hybrid
Decoupled
Frontend
Framework
Next.js
Styling
Tailwind CSS
API
Data Source
Headless CMS
Sanity
Infrastructure
Platform
Vercel
CDN
Cloudflare

Detected API Sources

/_next/image?url=https%3A%2F%2.../_next/image?url=https%3A%2F%2...

Technology Stack

10 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelMicrosoft Clarity

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Microsoft Advertising

Platforms

1
Vercel

SEO Analysis

C61/100
18
7
1
Meta Tags5/15
Content9/12
Headings8/8
Technical13/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
R
riverkeeper.orgriverkeeper.org

Riverkeeper - Protecting the Hudson River & Safeguarding Drinking W...

Protecting the Hudson River & Safeguarding Drinking Water

Title truncated.
Title Length71 chars

Recommended: 50-60 chars (~429px / 580px)

Description Length57 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (71 chars, ~429px). Will be truncated in search results.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

5,715 URLs

robots.txt

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.

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AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
16/25
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:26%
Words:1,178
Token eff.:Optimal
Sections/1K:7.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary25w
Descriptive Headingsavg 4.7w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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
86/100
15
Passed
1
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
7/15
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.
37/100
F
377 mg
CO₂e / view
3.6 MB
Page Weight
15%
Cleaner Than
New Visitor
430 mg
vs
Returning (cached)
215 mg
Annual (10K/mo)
45.2 kg
Emission Segments
Data Center
18 mg
Network
111 mg
Device
248 mg
Resource Breakdown
JavaScript
649.2 KB
Images
959.4 KB
CSS
24.2 KB
Fonts
1.8 MB
HTML
212.4 KB
Other
434 B
Green Hosting Verified
Vercel
Provider Match
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

No WAF

45d

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

26.03.2026

Valid Until

24.06.2026

Subject Alternative Names (1)

www.riverkeeper.org

SHA-256 Fingerprint

F0:C8:0A:16:DB:DA:A6:D2:1A:8F:3F:33:81:43:F9:C6:94:78:D4:0B...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age
0
cache-control
🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
date
Sun, 10 May 2026 05:50:15 GMT
link
</_next/static/media/0f69afc43df32314-s.p.ttf>; rel=preload;...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

riverkeeper.org.1.0001.arsmtp.com
riverkeeper.org.2.0001.arsmtp.com

Domain Information

riverkeeper.org

Domain Age
28y 1m

Created

27.03.1998

Expires

26.03.2028

Last Updated

22.03.2026

Registrar

Porkbun LLC

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.
B
76/100
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

Typography & Readability

noto_serif_semi_bold + noto_sans_bold

WCAG Partial
68/100
Readability
/30
24/30

20px · LH 1.50

Hierarchy
/20
17/20

3.2x ratio · ✓ H1→H6

WCAG
/25
15/25

1:1 min contrast

Performance
/25
12/25

3 fonts · 7 req

Heading Font

noto_serif_semi_bold

Serif64px

Body Font

noto_sans_bold

Sans20px

Contrast Ratio

1:1

2 issues

Reading Comfort

~36 CPL

Narrow lines
64px
h1
48px
h2
64px
h3
20px
p
Minor Second
Scale

✅ Excellent readability: 20px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 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 3.2x larger than body text.

Buy on MyFontsFlesch 42

Color Palette

12 unique colors
Light
#ffffff
Background· 36.3%
#3d80a7
Primary· 10.5%
#356d91
Secondary· 8.9%
#1e5478
Accent· 7.5%
#72aac2
Secondary· 6.4%
#4f92b5
Secondary· 6.1%
#174661
Accent· 5.8%
#8ab0bc
Secondary· 5.4%

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

3
Microsoft ClarityFree
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

3
Facebook PixelMid-Market
Microsoft AdsEnterprise
AdRollMid-Market

Ad platforms and retargeting pixels

2

Categories

6

Total Tools

1

Enterprise

2

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

24 Resources

20
Scripts
4
Styles
20
Async
0
Defer

Top Script Sources

local(12)clarity.ms(3)connect.facebook.net(2)scripts.clarity.ms(1)s.adroll.com(1)

Website Identity

riverkeeper.org

28 years old
Location detected: 🇺🇸 United Statesvia ip
Porkbun LLCen

Sponsored

Last analyzed: 10 May 2026 at 05:50

Historical Analysis & Change Tracking