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cartesia.ai

https://cartesia.ai· First analyzed 28 May 2026· Updated 28 May 2026
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cartesia.ai
Desktop screenshot of cartesia.ai
Mobile screenshot of cartesia.ai
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

216.150.1.129

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns1.vercel-dns.com.ns2.vercel-dns.com.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9.4 MB
116 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

JAMstack
🔀 Hybrid
Frontend
Framework
Astro
Styling
Tailwind CSS
Infrastructure
Platform
Vercel

Technology Stack

4 Technologies Detected

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Platforms

1
Vercel

SEO Analysis

A80/100
24
3
1
Meta Tags14/15
Content10/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
C
cartesia.aicartesia.ai

Cartesia \ AI that learns and interacts like humans

Integrate real-time text-to-speech with Sonic-3.5, Cartesia's streaming TTS API. Generate natural, expressive voices with laughter in 40+ languages — built f...

Description truncated.
Title Length51 chars

Recommended: 50-60 chars (~305px / 580px)

Description Length191 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (36/44) — critical for accessibility and SEO

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100
Poor
4 13

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

D55/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
6/25
Citation
16/25

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
nav
Text ratio:3%
Words:628
Token eff.:Optimal
Sections/1K:1.6
Depth:1/5

Structured Data

2 JSON-LD
Organization×1.1WebSite
sameAs entity links

Citation Readiness

Opening Summary47w
Descriptive Headingsavg 5.2w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (5)
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.
A
87/100
14
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
11/15
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.
1 recommendation
  • •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.
42/100
F
977 mg
CO₂e / view
9.4 MB
Page Weight
5%
Cleaner Than
New Visitor
1.12 g
vs
Returning (cached)
558 mg
Annual (10K/mo)
117.2 kg
Emission Segments
Data Center
48 mg
Network
287 mg
Device
642 mg
Resource Breakdown
JavaScript
348.4 KB
Images
3.2 MB
CSS
34.8 KB
Fonts
630.5 KB
HTML
19.4 KB
Other
5.2 MB
Green Hosting Verified
Vercel
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

36%Critical
Interactive

HTTPS

No WAF

51d

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

20.04.2026

Valid Until

19.07.2026

Subject Alternative Names (2)

*.cartesia.aicartesia.ai

SHA-256 Fingerprint

D2:A2:28:1D:04:7B:6B:D8:5D:78:DF:F8:AB:27:4C:2A:FE:7D:13:B3...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age
0
cache-control
🔴 No Cache(private, no-store)
content-encoding
⚡ Brotli(br)
content-type
text/html
date
Thu, 28 May 2026 22:50:21 GMT
server
Vercel
Good Warning Issue

Email Infrastructure

Google Workspace

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

smtp.google.com

Domain Information

cartesia.ai

Domain Age
3 years

Created

10.05.2023

Expires

10.05.2027

Last Updated

15.04.2025

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked
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.
B
78/100
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=1.0

Typography & Readability

PP Kyoto-b14c6ebb315b725b + ABC Diatype-017f0f97e8794fab

69/100
Readability
/30
19/30

16px · LH 1.25

Hierarchy
/20
17/20

2.25x ratio · ✓ H1→H6

WCAG
/25
19/25
Performance
/25
14/25

2 fonts · 12 req

Heading Font

PP Kyoto-b14c6ebb315b725b

Sans36px

Body Font

ABC Diatype-017f0f97e8794fab

Sans16px

Contrast Ratio

--

Reading Comfort

~34 CPL

Narrow lines
36px
h1
24px
h2
16px
p

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

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

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

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

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsFlesch 32

Color Palette

3 unique colors
Light
#92a195
Other· 5.5%
#f9f9f7
Secondary· 88.30000000000003%
#309d4b
Primary· 0%
#dae1da
Secondary· 6.2%

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

1
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

local(1)

Website Identity

Cartesia

Cartesia

Organization
cartesia.ai/
3 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.📧 Google Workspaceen

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Last analyzed: 28 May 2026 at 22:50

Historical Analysis & Change Tracking