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pyodide.org

https://pyodide.org· First analyzed 15 May 2026· Updated 14 May 2026
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pyodide.org
Desktop screenshot of pyodide.org
Mobile screenshot of pyodide.org
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.18.31.163

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

jakub.ns.cloudflare.com.noor.ns.cloudflare.com.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
966 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1 MB
30 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Icon Libraries

1
Font Awesome

CDN

1
Cloudflare

SEO Analysis

C60/100
16
10
1
Meta Tags4/15
Content10/12
Headings6/8
Technical17/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
P
pyodide.orgpyodide.org

Pyodide — Version 0.29.4

No description available for this page.

Title Length24 chars

Recommended: 50-60 chars (~140px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

85 URLs

robots.txt

24 rules

Sitemap reference found

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

F37/100
Bot Access
15/25
Machine Read.
13/25
Schema Data
0/25
Citation
9/25

AI Bot Access

6/14 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:5%
Words:655
Token eff.:Optimal
Sections/1K:13.7
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary119w
Descriptive Headingsavg 2.2w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
85/100
14
Passed
2
Critical
0
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
65/100
B
104 mg
CO₂e / view
1.0 MB
Page Weight
70%
Cleaner Than
New Visitor
119 mg
vs
Returning (cached)
59 mg
Annual (10K/mo)
12.4 kg
Emission Segments
Data Center
5 mg
Network
31 mg
Device
68 mg
Resource Breakdown
JavaScript
658.7 KB
Images
3.5 KB
CSS
354.1 KB
HTML
6.4 KB
Other
3.8 KB
Green Hosting Verified
Cloudflare
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

44%Poor
Interactive

HTTPS

WAF

61d

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

16.04.2026

Valid Until

15.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

pyodide.org

SHA-256 Fingerprint

9C:3D:99:5C:6C:3C:84:57:C3:79:06:78:26:CA:1D:52:3D:73:05:21...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-methods
HEAD, OPTIONS, GET
access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
🟡 1200s(max-age=1200)
cdn-cache-control
public
cf-cache-status
DYNAMIC
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (5)

eforward5.registrar-servers.com
eforward1.registrar-servers.com
eforward4.registrar-servers.com
eforward3.registrar-servers.com

+1 more

Domain Information

pyodide.org

Domain Age
5y 6m

Created

31.10.2020

Expires

31.10.2026

Last Updated

06.10.2025

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

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
74/100
Mobile Friendly7 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG AA
76/100
Readability
/30
21/30

16px · LH 1.65

Hierarchy
/20
18/20

2.62x ratio · ✓ H1→H6

WCAG
/25
18/25

5.92:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

-apple-system

Sans42px

Body Font

-apple-system

Sans16px

Contrast Ratio

5.92:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines
42px
h1
34px
h2
28px
h3
16px
p

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

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.9:1).

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

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

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

Flesch 39

Color Palette

8 unique colors
4.78:1 AA Light
#ffffff
Background· 84.19999999999999%
#6f7377
Other· 1.9%
#f0f2f3
Primary· 2.5%

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

Ad Networks

EthicalAds

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Scripts & Styles

20 Resources

12
Scripts
8
Styles
3
Async
3
Defer

Top Script Sources

_static(8)static.cloudflareinsights.com(1)local(1)media.ethicalads.io(1)server.ethicalads.io(1)

Website Identity

pyodide.org

5 years old
Location detected: 🇨🇦 Canadavia ip
NameCheap, Inc.en

Social Profiles

X (Twitter)GitHub

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Last analyzed: 14 May 2026 at 23:59

Historical Analysis & Change Tracking