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rumkin.com

https://rumkin.com· First analyzed 16 May 2026· Updated 16 May 2026
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rumkin.com
Desktop screenshot of rumkin.com
Mobile screenshot of rumkin.com
Mobile

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Hosting Provider

GitHub Pages
pages.github.com

IP Address

185.199.110.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

ns4.freeola.net.ns3.freeola.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
515 ms10%
Speed Index
670 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
446 KB
12 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Platform
GitHub Pages
CDN
Fastly

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

2 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

SEO Analysis

D47/100
15
7
1
Meta Tags4/15
Content10/12
Headings5/8
Technical13/25
E-E-A-T0/7
Images0/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
R
rumkin.comrumkin.com

Rumkin.com

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~63px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

8 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

1 rules

Allows all crawlers

Local SEO

Local Search Readiness

5/100
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

F37/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
0/25
Citation
3/25

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
navheader/footer
Text ratio:38%
Words:371
Token eff.:Optimal
Sections/1K:16.2
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 2.7w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
B
77/100
10
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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
A
55 mg
CO₂e / view
445.6 KB
Page Weight
90%
Cleaner Than
New Visitor
63 mg
vs
Returning (cached)
32 mg
Annual (10K/mo)
6.6 kg
Emission Segments
Data Center
12 mg
Network
13 mg
Device
30 mg
Resource Breakdown
JavaScript
12.4 KB
Images
1.2 KB
CSS
429.3 KB
HTML
2.7 KB
Green Hosting Not Verified
GitHub Pages
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

70d

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

26.04.2026

Valid Until

25.07.2026

Subject Alternative Names (2)

rumkin.comwww.rumkin.com

SHA-256 Fingerprint

F7:39:56:07:A0:53:4F:9E:65:42:29:7C:B0:B4:6F:40:1B:35:30:E3...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
🟡 600s(max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
2476
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

mx3.freeola.com
mx5.freeola.com
mx2.freeola.com
mx4.freeola.com

Domain Information

rumkin.com

Domain Age
25y 2m

Created

24.02.2001

Expires

08.02.2028

Last Updated

18.01.2026

Registrar

Tucows Domains Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
C
66/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Ubuntu

WCAG Partial
78/100
Readability
/30
25/30

16px · LH 1.40

Hierarchy
/20
16/20

2x ratio

WCAG
/25
19/25

4.17:1 min contrast

Performance
/25
18/25

1 font · 3 req

Heading Font

Ubuntu

Sans32px

Body Font

Ubuntu

Sans16px

Contrast Ratio

4.17:1

Below AA

Reading Comfort

Single Font Family

left aligned
32px
h1
19px
h3

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

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

⚠️ Partial contrast: 0 elements below WCAG AA threshold (min 4.2:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

Buy on MyFontsFlesch 62

Color Palette

10 unique colors
3.95:1 AA Large Light
#ffffff
Primary· 59.2%
#808080
Other· 23.1%
#377ebd
Accent· 5%
#96a0b4
Secondary· 1.7%
#8480b3
Secondary· 1.1%
#5d6990
Secondary· 0.5%

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

5 Resources

2
Scripts
3
Styles
1
Async
0
Defer

Top Script Sources

js(1)googletagmanager.com(1)

Website Identity

rumkin.com

fidian@rumkin.com
25 years old
Location detected: 🇺🇸 United Statesvia ip
Tucows Domains Inc.en

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Last analyzed: 16 May 2026 at 05:09

Historical Analysis & Change Tracking