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chaum.com

https://chaum.com· First analyzed 29 May 2026· Updated 29 May 2026
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chaum.com
Desktop screenshot of chaum.com
Mobile screenshot of chaum.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.11.192

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

carter.ns.cloudflare.com.naya.ns.cloudflare.com.

Performance

73

Core Web Vitals

Weight

First Contentful Paint
6.8 s10%
Speed Index
8.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3 MB
83 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.8.2
cms
Understrapv1.2.4
by Howard Development & Consulting
View Theme

Technology Stack

15 Technologies Detected

Plugins

8
3D Flipbook Dflip Lite
Elementor
Ele Custom Skin
Premium Addons For Elementor
Elementor
Dynamicconditions
Make Column Clickable Elementor
Yoast SEO

Libraries

2
jQueryv3.7.1
jQuery UI

CSS Frameworks

2
Tailwind CSS
Bootstrap

Other

1
Lottie

Icon Libraries

1
Font Awesome

CDN

1
Cloudflare

SEO Analysis

B72/100
21
9
1
Meta Tags7/15
Content8/12
Headings5/8
Technical24/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness4/4
Mobile4/4
Indexability3/3
C
chaum.comchaum.com

Home - chaum.com

Widely recognized as the inventor of digital cash, David is currently leading xx network, a completely private, quantum-secure decentralized messaging and pa...

Description truncated.
Title Length16 chars

Recommended: 50-60 chars (~105px / 580px)

Description Length399 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (15/16) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

17/100
Poor
5 11 1

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

D53/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
4/25
Citation
19/25

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:4%
Words:754
Token eff.:Optimal
Sections/1K:45.1

Structured Data

4 JSON-LD
WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary107w
Descriptive Headingsavg 9.4w
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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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.
C
66/100
8
Passed
4
Critical
1
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
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •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.
36/100
E
306 mg
CO₂e / view
3.0 MB
Page Weight
30%
Cleaner Than
New Visitor
350 mg
vs
Returning (cached)
175 mg
Annual (10K/mo)
36.8 kg
Emission Segments
Data Center
15 mg
Network
90 mg
Device
201 mg
Resource Breakdown
JavaScript
214.6 KB
Images
1.8 MB
CSS
931.7 KB
HTML
24.5 KB
Green Hosting Verified
Cloudflare
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

WAF

82d

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

22.05.2026

Valid Until

20.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

chaum.com*.chaum.com

SHA-256 Fingerprint

FC:B7:E8:A4:2A:EE:13:EB:5E:86:91:43:67:1E:52:3A:1B:A9:4C:3C...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-ray
a0374ab4efadcc98-EWR
content-encoding
zstd
content-type
text/html; charset=UTF-8
date
Fri, 29 May 2026 17:41:47 GMT
Good Warning Issue

Email Infrastructure

Fastmail

Score

50

SPF
DKIM
DMARC

MX Records (2)

in1.smtp.messagingengine.com
in2.smtp.messagingengine.com

Domain Information

chaum.com

Domain Age
27y 11m

Created

01.07.1998

Expires

30.06.2027

Last Updated

01.09.2022

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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
78/100
Mobile Friendly13 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=1.0, viewport-fit=cover
1 recommendation
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Roboto

WCAG Partial
71/100
Readability
/30
26/30

25px · LH 1.40

Hierarchy
/20
13/20

1.68x ratio

WCAG
/25
13/25

1:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Roboto

Sans42px

Body Font

Roboto

Sans25px

Contrast Ratio

1:1

35 issues

Reading Comfort

~35 CPL

Narrow lines
42px
h1
50px
h3
25px
p
Minor Third
Scale

✅ Excellent readability: 25px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 35 elements below WCAG AA threshold (min 1.0:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Flesch 25

Color Palette

12 unique colors
4.01:1 AA Large Dark
#474b4e
Other· 2%
#a7b1af
Other· 1.1%
#63503b
Secondary· 13.4%
#372b1f
Primary· 10.7%
#ceb996
Secondary· 8.6%
#d7c8aa
Secondary· 7.7%
#9c8a71
Secondary· 6.9%
#e5dbc2
Secondary· 5.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
0
Async
0
Defer

Top Script Sources

chaum.com(20)

Website Identity

Home - chaum.com

Welcome to David Chaum's site

[email protected]
chaum.com/
27 years old
Location detected: 🇨🇦 Canadavia ip
GoDaddy.com, LLC📧 Fastmailen-US

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Last analyzed: 29 May 2026 at 17:42

Historical Analysis & Change Tracking