numfocus.org

https://numfocus.org· First analyzed 21 May 2026· Updated 21 May 2026

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numfocus.org

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

104.199.113.171

Site Location

🇺🇸 United Statesvia phone

Server Location

🇺🇸 The Dalles, United States

ASN

AS396982

Organization

Google Cloud (us-west1)

Server

Nginx

CDN

Nameservers

pdns1.registrar-servers.com.pdns2.registrar-servers.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.4 MB

155 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

DiviCustom

Technology Stack

23 Technologies Detected

Plugins

Cookie Notice Display Medium Posts

Divi Footer Editor

Dwd Custom Fullwidth Header Extended Email Encoder Bundle Search Filter Pro Dwd Aio Module Extended Plugin Add To Any Inline Google Spreadsheet Viewer Slick Slider Wp Gallery Custom Links

Libraries

UI Components

Slick Carousel Owl Carousel

Other

CSS Frameworks

Fonts

Marketing

Web Servers

SEO Analysis

B75/100

Meta Tags14/15

Content8/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile1/4

Indexability3/3

numfocus.orgnumfocus.org

NumFOCUS: A Nonprofit Supporting Open Code for Better Science

NumFOCUS promotes open practices in research, data, and scientific computing. We run educational programs and fiscal sponsorship of open source projects.

Title Length61 chars

Recommended: 50-60 chars (~377px / 580px)

Description Length153 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (310/448) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100

Needs Work

6 11

Sponsored

AI & LLM Readiness

D51/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

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

Text ratio:1%

Words:587

Token eff.:Optimal

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary79w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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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.

81/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

11/15

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.

1 recommendation

•Accessibility recommendation preview...

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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.

46/100

244 mg

CO₂e / view

2.4 MB

Page Weight

30%

Cleaner Than

New Visitor

279 mg

Returning (cached)

139 mg

Annual (10K/mo)

29.3 kg

Emission Segments

Data Center

12 mg

Network

72 mg

Device

160 mg

Resource Breakdown

JavaScript

886.1 KB

Images

977.2 KB

CSS

514.9 KB

Fonts

750 B

HTML

36.9 KB

Green Hosting Verified

Google Cloud

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

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/2

Valid From

07.05.2026

Valid Until

05.08.2026

Subject Alternative Names (1)

numfocus.org

SHA-256 Fingerprint

90:FD:9E:8C:12:58:AA:BE:57:BD:C7:B7:36:67:7B:BE:61:56:89:47...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 19:10:25 GMT

link

<https://numfocus.org/wp-json/>; rel="https://api.w.org/", <...

server

nginx

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx3.googlemail.com

aspmx2.googlemail.com

aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

numfocus.org

Domain Age

14y 4m

Created

09.01.2012

Expires

09.01.2029

Last Updated

01.05.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

56/100

Not Mobile Friendly44 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica + -apple-system

WCAG Partial

56/100

Readability

/30

16/30

15px · LH 1.33

Hierarchy

/20

16/20

3.33x ratio

WCAG

/25

14/25

1:1 min contrast

Performance

/25

10/25

System fonts

Heading Font

Helvetica

Sans50px

Body Font

-apple-system

Sans15px

Contrast Ratio

1:1

2 issues

Reading Comfort

~36 CPL

Narrow lines

50px

22px

30px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

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

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

GGoogle Fonts Buy on MyFontsFlesch 52

Color Palette

11 unique colors

10.32:1 AAA Light

#ffffff

Primary· 28.2%

#3c4145

Other· 16.5%

#687c95

Secondary· 15.9%

#91aaab

Secondary· 3.6%

Business & Marketing Stack

3 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.datatables.net(7)numfocus.org(5)cdnjs.cloudflare.com(3)js.hs-analytics.net(1)js.hubspot.com(1)

Website Identity

NumFOCUS

Organization

NumFOCUS promotes open practices in research, data, and scientific computing. We run educational programs and fiscal sponsorship of open source projects.

+15128312870

numfocus.org/

14 years old

Location detected: 🇺🇸 United Statesvia phone

NameCheap, Inc.📧 Google Workspaceen-US

Social Profiles

Medium

Sponsored

Last analyzed: 21 May 2026 at 19:10

Historical Analysis & Change Tracking