mastodon.design

https://mastodon.design· First analyzed 29 May 2026· Updated 29 May 2026

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mastodon.design

Mobile

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

178.33.220.142

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS16276

Organization

Masto.host

Server

Mastodon

Nameservers

ns31.infomaniak.com.ns32.infomaniak.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.6 s10%

Speed Index

2.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

101 requests

Image Optimization

WebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

OVHcloud

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

C64/100

Meta Tags9/15

Content11/12

Headings8/8

Technical14/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

mastodon.designmastodon.design

About - mastodon.design

A small instance for and by people who make things! We stand for an open, independent, sustainable, inclusive, and accessible web.

Title Length23 chars

Recommended: 50-60 chars (~141px / 580px)

Description Length130 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (4/6) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

6 rules

Local SEO

Local Search Readiness

6/100

Poor

2 14 2

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

Sponsored

AI & LLM Readiness

D41/100

Bot Access

19/25

Machine Read.

10/25

Schema Data

0/25

Citation

12/25

AI Bot Access

13/14 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 blocksnav

Text ratio:14%

Words:1,608

Token eff.:Optimal

Sections/1K:10

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary58w

Descriptive Headingsavg 2w

Canonical URL

Open Graph3/3

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.

72/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

2/15

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.

63/100

150 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

171 mg

Returning (cached)

86 mg

Annual (10K/mo)

18.0 kg

Emission Segments

Data Center

7 mg

Network

44 mg

Device

98 mg

Resource Breakdown

JavaScript

721.3 KB

Images

1.4 KB

CSS

722.9 KB

HTML

15.6 KB

Other

21.7 KB

Green Hosting Verified

OVHcloud

GWF Verified

1 recommendation

•Carbon footprint recommendation preview...

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Security Score

81%Very Good

Interactive

HTTPS

No WAF

83d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

23.05.2026

Valid Until

21.08.2026

Subject Alternative Names (1)

mastodon.design

SHA-256 Fingerprint

2C:60:FD:36:75:9F:DF:FD:77:DB:92:91:CC:0F:B9:02:8D:9F:E6:6C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 29 May 2026 10:56:03 GMT

strict-transport-security

max-age=31536000, max-age=63072000; includeSubDomains

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mta-gw.infomaniak.ch

Domain Information

mastodon.design

Domain Age

9y 1m

Created

05.04.2017

Expires

05.04.2027

Last Updated

28.03.2026

Registrar

Key-Systems LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

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.

73/100

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, viewport-fit=cover

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

mastodon-font-sans-serif

WCAG Partial

70/100

Readability

/30

21/30

15px · LH 1.47

Hierarchy

/20

17/20

1.6x ratio · ✓ H1→H6

WCAG

/25

16/25

4.38:1 min contrast

Performance

/25

16/25

1 font · 4 req

Heading Font

mastodon-font-sans-serif

Sans24px

Body Font

mastodon-font-sans-serif

Sans15px

Contrast Ratio

4.38:1

17 issues

Reading Comfort

~36 CPL

Narrow lines

24px

19px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.47 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 43/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 4.4:1).

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

Buy on MyFontsFluid TypeFlesch 43

Color Palette

5 unique colors

Light

#ffffff

Background· 71.5%

#0b0c12

Secondary· 18.1%

#73739b

Secondary· 3.7%

#1a1d27

Primary· 2.4%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)

Website Identity

mastodon.design

admin@mastodon.design

9 years old

Location detected: 🇫🇷 Francevia ip

Key-Systems LLCen-GB

Social Profiles

GitHub Mastodon

Sponsored

Last analyzed: 29 May 2026 at 10:56

Historical Analysis & Change Tracking