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purescript.org

https://purescript.org· First analyzed 22 May 2026· Updated 22 May 2026
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purescript.org
Desktop screenshot of purescript.org
Mobile screenshot of purescript.org
Mobile

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Hosting Provider

GitHub Pages
pages.github.com

IP Address

185.199.108.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

dns1.registrar-servers.com.dns2.registrar-servers.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
367 ms10%
Speed Index
477 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
34 KB
5 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Platform
GitHub Pages
CDN
Fastly

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Bootstrapv3.3.4
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

SEO Analysis

D41/100
10
11
2
Meta Tags4/15
Content9/12
Headings3/8
Technical8/21
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
P
purescript.orgpurescript.org

PureScript

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~59px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1

13 issues found

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Local SEO

Local Search Readiness

0/100
Poor
15 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

F31/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
4/25

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
code blocksheader/footer
Text ratio:26%
Words:288
Token eff.:Too Short
Sections/1K:38.2
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary49w
Descriptive Headingsavg 2.1w
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.
C
68/100
7
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
8/20
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.
3 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.
62/100
A+
4 mg
CO₂e / view
33.9 KB
Page Weight
95%
Cleaner Than
New Visitor
5 mg
vs
Returning (cached)
2 mg
Annual (10K/mo)
504 g
Emission Segments
Data Center
<0.001 g
Network
1 mg
Device
2 mg
Resource Breakdown
Images
3.9 KB
CSS
25.3 KB
Fonts
1.9 KB
HTML
2.8 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

56d

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

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (2)

purescript.orgwww.purescript.org

SHA-256 Fingerprint

A5:16:1D:60:0F:37:43:64:B8:69:DD:DD:A5:67:29:99:72:0F:B9:CC...

Recommendations

Security recommendation preview

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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
2518
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (5)

eforward1.registrar-servers.com
eforward3.registrar-servers.com
eforward2.registrar-servers.com
eforward5.registrar-servers.com

+1 more

Domain Information

purescript.org

Domain Age
12y 3m

Created

19.02.2014

Expires

19.02.2027

Last Updated

25.01.2026

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.
C
64/100
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

Roboto

WCAG Partial
62/100
Readability
/30
25/30

16px · LH 1.50

Hierarchy
/20
7/20
WCAG
/25
17/25

2.72:1 min contrast

Performance
/25
13/25

1 font · 1 req

Heading Font

Roboto

Sans

Body Font

Roboto

Sans16px

Contrast Ratio

2.72:1

8 issues

Reading Comfort

~40 CPL

Narrow lines
26px
h2
15px
h3
16px
p

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

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

❌ Very complex text: Flesch score 27/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 2.7:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

GGoogle FontsFlesch 27

Color Palette

4 unique colors
3.52:1 AA Large Light
#f5f5f5
Background· 64.80000000000001%
#818287
Other· 3.5%
#1e222d
Primary· 27.3%

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

3 Resources

0
Scripts
3
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

purescript.org

12 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.

Social Profiles

X (Twitter)GitHub

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Last analyzed: 22 May 2026 at 20:37

Historical Analysis & Change Tracking