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markdotto.com

https://markdotto.com· First analyzed 28 May 2026· Updated 28 May 2026
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markdotto.com
Desktop screenshot of markdotto.com
Mobile screenshot of markdotto.com
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns44.domaincontrol.com.ns43.domaincontrol.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
819 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
23 KB
10 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Astrov4.16.11
Infrastructure
Platform
Vercel

Technology Stack

4 Technologies Detected

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Analytics

1
Fathom Analytics

Platforms

1
Vercel

SEO Analysis

C60/100
19
6
1
Meta Tags8/15
Content9/12
Headings1/8
Technical14/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social3/5
Freshness2/4
Mobile4/4
Indexability3/3
M
markdotto.commarkdotto.com

@mdo

Designer, developer, and advisor. Building Pierre. Previously at GitHub and Twitter. Creator of Bootstrap. Huge nerd.

Title Length4 chars

Recommended: 50-60 chars (~30px / 580px)

Description Length117 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

7 issues found

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Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

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

D43/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
14/25

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:12%
Words:370
Token eff.:Optimal
Sections/1K:8.1
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary46w
Descriptive Headingsavg 1w
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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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.
84/100
A+
2 mg
CO₂e / view
23.0 KB
Page Weight
95%
Cleaner Than
New Visitor
3 mg
vs
Returning (cached)
1 mg
Annual (10K/mo)
276 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
2 mg
Resource Breakdown
Images
13.5 KB
CSS
3.1 KB
HTML
6.5 KB
Green Hosting Verified
Vercel
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

33d

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

02.04.2026

Valid Until

01.07.2026

Subject Alternative Names (1)

markdotto.com

SHA-256 Fingerprint

EF:A1:2D:EC:1B:76:7D:39:7B:23:DB:64:96:C5:47:75:13:7C:40:D2...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin
*
age
441220
cache-control
🟡 0s(public, max-age=0, must-revalidate)
content-disposition
inline
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

markdotto.com

Domain Age
19y 4m

Created

04.01.2007

Expires

04.01.2028

Last Updated

05.01.2026

Registrar

GoDaddy.com, LLC

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
70/100
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

Typography & Readability

-apple-system

WCAG Partial
64/100
Readability
/30
25/30

20px · LH 1.60

Hierarchy
/20
8/20
WCAG
/25
16/25

3.4:1 min contrast

Performance
/25
15/25

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans20px

Contrast Ratio

3.4:1

4 issues

Reading Comfort

~37 CPL

Narrow lines
24px
h3
16px
h4
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 3.4:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 58

Color Palette

7 unique colors
3.67:1 AA Large Light
#fafafa
Background· 84.79999999999998%
#87817f
Other· 1.9%
#58453b
Secondary· 2.9%
#291a15
Primary· 2.7%
#baa28d
Secondary· 2.3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
FathomSMB
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

4 Resources

1
Scripts
3
Styles
0
Async
1
Defer

Top Script Sources

cdn.usefathom.com(1)

Website Identity

markdotto.com

19 years old
Location detected: 🇺🇸 United Statesvia ip
GoDaddy.com, LLC

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Last analyzed: 28 May 2026 at 19:35

Historical Analysis & Change Tracking