haskellforall.com

https://haskellforall.com· First analyzed 28 May 2026· Updated 28 May 2026

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haskellforall.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.77.92

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

serena.ns.cloudflare.com.shane.ns.cloudflare.com.

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%

339 KB

33 requests

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

4 Technologies Detected

Meta Frameworks

Icon Libraries

Analytics

CDN

SEO Analysis

D57/100

Meta Tags5/15

Content9/12

Headings7/8

Technical13/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

haskellforall.comhaskellforall.com

Haskell for all

A blog about Haskell and functional programming

Title Length15 chars

Recommended: 50-60 chars (~84px / 580px)

Description Length47 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (1/1) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

robots.txt

21 rules

Local SEO

Local Search Readiness

6/100

Poor

3 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F35/100

Bot Access

15/25

Machine Read.

9/25

Schema Data

0/25

Citation

11/25

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

Text ratio:18%

Words:3,472

Token eff.:Good

Sections/1K:57.9

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 5.4w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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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.

58/100

Passed

Critical

Warnings

Images & Alt Text

3/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

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

3/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 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.

70/100

A+

34 mg

CO₂e / view

338.6 KB

Page Weight

90%

Cleaner Than

New Visitor

39 mg

Returning (cached)

20 mg

Annual (10K/mo)

4.1 kg

Emission Segments

Data Center

2 mg

Network

10 mg

Device

23 mg

Resource Breakdown

JavaScript

161.1 KB

Images

19.0 KB

CSS

5.7 KB

Fonts

35.4 KB

HTML

23.6 KB

Other

93.7 KB

Green Hosting Verified

Cloudflare

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

WAF

76d

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

15.05.2026

Valid Until

13.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

haskellforall.com

SHA-256 Fingerprint

8B:6B:36:7F:89:5E:E3:D7:CC:ED:C2:A7:DA:0B:D2:A6:38:98:4F:9E...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(public, max-age=0, must-revalidate)

cf-cache-status

HIT

cf-ray

a02cd5357e7e3788-EWR

content-encoding

zstd

content-type

text/html

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

haskellforall.com

Domain Age

14y 6m

Created

19.11.2011

Expires

19.11.2026

Last Updated

17.01.2026

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.

60/100

Mobile Friendly

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica + Lato

WCAG AA

77/100

Readability

/30

23/30

16px · LH 1.50

Hierarchy

/20

14/20

2.2x ratio

WCAG

/25

22/25

4.94:1 min contrast

Performance

/25

18/25

2 fonts · 3 req

Heading Font

Helvetica

Sans35px

Body Font

Lato

Sans16px

Contrast Ratio

4.94:1

WCAG AA (≥4.5:1)

Reading Comfort

~36 CPL

Narrow lines

35px

27px

16px

✅ 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 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

❌ Broken heading hierarchy: 3 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

Buy on MyFontsFlesch 0

Color Palette

6 unique colors

Light

#9695a7

Secondary· 1.4%

#f0f1f5

Primary· 93.1%

#aeb2bd

Secondary· 1.6%

#dbdce2

Secondary· 1.4%

#6b6087

Secondary· 1.3%

#cac8d2

Secondary· 1.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

FathomSMB

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)cdn.usefathom.com(1)static.cloudflareinsights.com(1)

Website Identity

haskellforall.com

[email protected]

14 years old

Location detected: 🇨🇦 Canadavia ip

NameCheap, Inc.en

Social Profiles

GitHub

Sponsored

Last analyzed: 28 May 2026 at 11:14

Historical Analysis & Change Tracking