Founded in 1908, Prevent Blindness is the nation’s leading volunteer eye health and safety organization dedicated to fighting blindness and saving sight.

Title Length48 chars

Recommended: 50-60 chars (~285px / 580px)

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

48 URLs

48 sub-sitemaps

robots.txt

16 rules

Local SEO

Local Search Readiness

10/100

Poor

3 13 1

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.

2/25

Schema Data

12/25

Citation

15/25

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:6%

Words:3,539

Token eff.:Poor Structure

Depth:1/5

Structured Data

5 JSON-LD

Article×1.2Person×1.3Organization×1.1WebSiteSearchAction

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

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.

68/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 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

203 mg

CO₂e / view

2.0 MB

Page Weight

50%

Cleaner Than

New Visitor

232 mg

Returning (cached)

116 mg

Annual (10K/mo)

24.4 kg

Emission Segments

Data Center

10 mg

Network

60 mg

Device

134 mg

Resource Breakdown

JavaScript

352.4 KB

Images

1.0 MB

CSS

560.1 KB

Fonts

1.1 KB

HTML

53.9 KB

Other

428 B

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

09.04.2026

Valid Until

08.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

preventblindness.org*.preventblindness.org

SHA-256 Fingerprint

72:F7:2D:28:F2:23:9B:08:E6:5F:0C:C6:C5:CB:D0:1F:EE:63:1C:BA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(max-age=0)

cf-cache-status

DYNAMIC

cf-ray

9f39d1bcd9f37d06-EWR

content-encoding

zstd

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

preventblindness-org.mail.protection.outlook.com

Domain Information

preventblindness.org

Domain Age

29 years

Created

05.05.1997

Expires

06.05.2028

Last Updated

12.03.2026

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

79/100

Mobile Friendly18 breakpoints

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

Oswald + sans-serif

WCAG AAA

70/100

Readability

/30

22/30

16px · LH 1.50

Hierarchy

/20

8/20

WCAG

/25

24/25

9.73:1 min contrast

Performance

/25

16/25

1 font · 5 req

Heading Font

Oswald

Display

Body Font

sans-serif

Sans16px

Contrast Ratio

9.73:1

WCAG AAA (≥7:1)

Reading Comfort

~41 CPL

Narrow lines

24px

19px

16px

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

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.7:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

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

GGoogle Fonts Buy on MyFontsFluid Type (rem)Flesch 57

Color Palette

13 unique colors

9.83:1 AAA Light

#ffffff

Background· 49%

#3f444a

Secondary· 5%

#17191f

Primary· 6.3%

#397b8e

Secondary· 5.7%

#d7cb7c

Accent· 5%

#a3edb7

Accent· 4.9%

#78e4b1

Accent· 4.4%

#a3cb7f

Secondary· 4.1%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

HotjarMid-Market

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

preventblindness.org(12)connect.facebook.net(2)googletagmanager.com(2)gstatic.com(1)static.addtoany.com(1)

Website Identity

kwest@preventblindness.org

Person

29 years old

Location detected: 🇨🇦 Canadavia ip

Network Solutions, LLC📧 Microsoft 365en-US

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

Sponsored

Last analyzed: 28 Apr 2026 at 23:24

Historical Analysis & Change Tracking