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software-carpentry.org

https://software-carpentry.org· First analyzed 10 May 2026· Updated 10 May 2026
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software-carpentry.org
Desktop screenshot of software-carpentry.org
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Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

18.165.140.58

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

AmazonS3

CDN

CloudFront

Nameservers

ns-391.awsdns-48.com.ns-597.awsdns-10.net.ns-1473.awsdns-56.org.ns-1908.awsdns-46.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
598 ms10%
Speed Index
777 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
113 KB
21 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Hugov0.139.2
Styling
Tailwind CSS
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

5 Technologies Detected

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Analytics

1
Matomo

SEO Analysis

D52/100
14
11
1
Meta Tags4/15
Content6/12
Headings5/8
Technical12/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social2/5
Freshness4/4
Mobile4/4
Indexability3/3
S
software-carpentry.orgsoftware-carpentry.org

Software Carpentry

No description available for this page.

Title Length18 chars

Recommended: 50-60 chars (~114px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

13 URLs

robots.txt

Local SEO

Local Search Readiness

3/100
Poor
1 14 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

F32/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
Citation
7/25

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
header/footer
Text ratio:5%
Words:133
Token eff.:Too Short
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph1/3
Twitter Card0/3
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.
B
73/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
15/20
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
2/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
80/100
A+
11 mg
CO₂e / view
113.0 KB
Page Weight
95%
Cleaner Than
New Visitor
13 mg
vs
Returning (cached)
7 mg
Annual (10K/mo)
1.4 kg
Emission Segments
Data Center
<0.001 g
Network
3 mg
Device
8 mg
Resource Breakdown
JavaScript
25.2 KB
Images
72.9 KB
CSS
9.5 KB
Fonts
913 B
HTML
4.6 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
1 recommendation
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

WAF

229d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

27.11.2025

Valid Until

25.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.software-carpentry.orgsoftware-carpentry.org

SHA-256 Fingerprint

39:62:83:D9:FC:D5:0D:88:D3:8C:36:96:69:A2:56:98:9B:0C:1B:68...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

age
14531
content-encoding
📦 Gzip(gzip)
content-type
text/html
date
Sun, 10 May 2026 19:00:36 GMT
etag
W/"36b7e15925a55d9ffad2963eda5dcb1b"
last-modified
Sun, 10 May 2026 18:47:40 GMT
Good Warning Issue

Email Infrastructure

Mailgun

Score

45

SPF
DKIM
DMARC

MX Records (2)

mxa.mailgun.org
mxb.mailgun.org

Domain Information

software-carpentry.org

Domain Age
17y 1m

Created

07.04.2009

Expires

07.04.2029

Last Updated

21.01.2026

Registrar

Gandi SAS

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.
C
63/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG Partial
79/100
Readability
/30
26/30

16px · LH 1.50

Hierarchy
/20
14/20

2.62x ratio

WCAG
/25
19/25

1:1 min contrast

Performance
/25
20/25

2 fonts · 1 req

Heading Font

Open Sans

Sans42px

Body Font

Open Sans

Sans16px

Contrast Ratio

1:1

1 issue

Reading Comfort

Single Font Family

left aligned
42px
h1
14px
h4

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

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

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

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle FontsBuy on MyFonts

Color Palette

11 unique colors
5.71:1 AA Light
#babcc0
Other· 14%
#3d3d3d
Text· 8.3%
#e5f1ff
Primary· 23.7%
#08172e
Accent· 12.7%
#372416
Secondary· 8.9%
#705546
Secondary· 5.9%
#9f8c86
Secondary· 3.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

6 Resources

4
Scripts
2
Styles
1
Async
2
Defer

Top Script Sources

matomo.carpentries.org(1)cdn.jsdelivr.net(1)kit.fontawesome.com(1)local(1)

Website Identity

software-carpentry.org

17 years old
Location detected: 🇫🇮 Finlandvia ip
Gandi SAS📧 Mailgunen-us

Social Profiles

LinkedInGitHubBluesky

Sponsored

Last analyzed: 10 May 2026 at 23:02

Historical Analysis & Change Tracking

software-carpentry.org Technology Stack - Built With Alpine.js, Tailwind CSS, Font Awesome, Google Fonts, Matomo | StackOptic | StackOptic