StackOptic
Back to Search
kennethreitz.org favicon

kennethreitz.org

https://kennethreitz.org· First analyzed 11 May 2026· Updated 11 May 2026
Export
kennethreitz.org
Desktop screenshot of kennethreitz.org
Mobile screenshot of kennethreitz.org
Mobile

Sponsored

Hosting Provider

Fly.io
fly.io

IP Address

66.241.124.46

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS40509

Organization

Fly.io, Inc

Server

Fly/a589ac11 (2026-05-08)

Nameservers

ns4.dnsimple-edge.org.ns1.dnsimple.com.ns2.dnsimple-edge.net.ns3.dnsimple.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
597 ms10%
Speed Index
776 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
164 KB
14 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Platform
Fly.io

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Platforms

1
Fly.io

SEO Analysis

B72/100
23
4
1
Meta Tags8/15
Content6/12
Headings8/8
Technical20/25
E-E-A-T7/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
K
kennethreitz.orgkennethreitz.org

Kenneth Reitz

Kenneth Reitz - Creator of Requests and Certifi, trusted by millions of developers worldwide. Thoughts on technology, philosophy, and building software for h...

Description truncated.
Title Length13 chars

Recommended: 50-60 chars (~78px / 580px)

Description Length163 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (34/35) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

291 URLs

robots.txt

4 rules

Sitemap reference found

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

D55/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
8/25
Citation
14/25

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:3%
Words:442
Token eff.:Optimal
Sections/1K:9
Depth:2/5

Structured Data

1 JSON-LD
Person×1.3Organization×1.1WebSite
sameAs entity links

Citation Readiness

Opening Summary45w
Descriptive Headingsavg 2w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (6)
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
83/100
13
Passed
1
Critical
0
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
4/15
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.
60/100
A+
20 mg
CO₂e / view
164.2 KB
Page Weight
95%
Cleaner Than
New Visitor
23 mg
vs
Returning (cached)
12 mg
Annual (10K/mo)
2.4 kg
Emission Segments
Data Center
5 mg
Network
5 mg
Device
11 mg
Resource Breakdown
Images
610 B
CSS
142.6 KB
HTML
11.9 KB
Other
9.2 KB
Green Hosting Not Verified
Fly.io
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

59d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.04.2026

Valid Until

09.07.2026

Subject Alternative Names (1)

kennethreitz.org

SHA-256 Fingerprint

4B:82:21:F2:7C:26:70:75:16:22:53:B9:4D:13:64:49:DB:34:AE:66...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-length
11874
content-type
text/html
date
Mon, 11 May 2026 23:00:29 GMT
fly-request-id
01KRCMAFVMEBBDHZRPCER8NPZR-cdg
server
Fly/a589ac11 (2026-05-08)
Good Warning Issue

Email Infrastructure

iCloud Mail

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx01.mail.icloud.com
mx02.mail.icloud.com

Domain Information

kennethreitz.org

Domain Age
13y 6m

Created

13.11.2012

Expires

13.11.2026

Last Updated

25.11.2025

Registrar

1API GmbH

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=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

et-book

WCAG Partial
73/100
Readability
/30
25/30

20px · LH 1.54

Hierarchy
/20
13/20

2.46x ratio · ✓ H1→H6

WCAG
/25
17/25

3.54:1 min contrast

Performance
/25
18/25

1 font · 3 req

Heading Font

et-book

Sans48px

Body Font

et-book

Sans20px

Contrast Ratio

3.54:1

15 issues

Reading Comfort

Single Font Family

left aligned
48px
h1
32px
h2
20px
p

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

✅ Optimal line spacing: 1.54 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 3.5:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFlesch 56

Color Palette

6 unique colors
Light
#a6a6a1
Other· 2.3%
#fffff7
Primary· 91.4%
#edede7
Secondary· 1.5%

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

Sponsored

Scripts & Styles

5 Resources

2
Scripts
3
Styles
2
Async
0
Defer

Top Script Sources

d2fuc4clr7gvcn.cloudfront.net(1)googletagmanager.com(1)

Website Identity

Kenneth Reitz

Kenneth Reitz - Creator of Requests and Certifi, trusted by millions of developers worldwide. Thoughts on technology, philosophy, and building software for humans.

kennethreitz.org/
13 years old
Location detected: 🇫🇷 Francevia ip
1API GmbH📧 iCloud Mailen

Social Profiles

GitHub

Sponsored

Last analyzed: 11 May 2026 at 23:00

Historical Analysis & Change Tracking