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spline.design

https://spline.design· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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spline.design
Desktop screenshot of spline.design
Mobile screenshot of spline.design
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

216.150.1.65

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

100

Core Web Vitals

Weight

First Contentful Paint
543 ms10%
Speed Index
706 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.1 MB
250 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Infrastructure
Platform
Vercel
CDN
Vercel Image

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Meta Frameworks

1
Next.js

Other

1
D3.js

Tag Managers

1
Google Tag Manager

Advertising

1
LinkedIn Ads

Platforms

1
Vercel

SEO Analysis

D57/100
17
7
1
Meta Tags11/15
Content3/12
Headings1/8
Technical16/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
S
spline.designspline.design

Spline - 3D Design tool in the browser with real-time collaboration

Spline is a free 3D design software with real-time collaboration to create web interactive experiences in the browser. Easy 3d modeling, animation, textures,...

Description truncated.
Title Length67 chars

Recommended: 50-60 chars (~399px / 580px)

Description Length167 chars

Recommended: 120-160 chars

Issues (1)

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

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

71 URLs

robots.txt

Local SEO

Local Search Readiness

5/100
Poor
2 13 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

F35/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
0/25
Citation
11/25

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
navheader/footer
Text ratio:3%
Words:130
Token eff.:Too Short
Sections/1K:30.8
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w
Descriptive Headingsavg 1w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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
69/100
11
Passed
4
Critical
1
Warnings
Images & Alt Text
10/20
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
43/100
E
316 mg
CO₂e / view
3.1 MB
Page Weight
30%
Cleaner Than
New Visitor
361 mg
vs
Returning (cached)
181 mg
Annual (10K/mo)
37.9 kg
Emission Segments
Data Center
16 mg
Network
93 mg
Device
208 mg
Resource Breakdown
JavaScript
1.9 MB
Images
964.5 KB
CSS
85.6 KB
Fonts
84.9 KB
HTML
38.8 KB
Other
18.6 KB
Green Hosting Verified
Vercel
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Static / Informational

HTTPS

No WAF

79d

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

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

*.spline.designspline.design

SHA-256 Fingerprint

0B:0D:5F:6E:30:33:5A:A7:42:A4:62:9B:02:CA:3B:D5:F9:1D:0F:90...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin
*
age
160531
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

Google Workspace

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com
alt4.aspmx.l.google.com
alt3.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

spline.design

Domain Age
7 years

Created

20.04.2019

Expires

20.04.2029

Last Updated

20.10.2025

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

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
66/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Spline Sans

WCAG Fail
54/100
Readability
/30
16/30

12px · LH 1.33

Hierarchy
/20
7/20
WCAG
/25
15/25

1:1 min contrast

Performance
/25
16/25

1 font · 5 req

Heading Font

Spline Sans

Sans

Body Font

Spline Sans

Sans12px

Contrast Ratio

1:1

37 issues

Reading Comfort

~52 CPL

Optimal (45–75)
14px
h3
14px
h4
12px
p
Minor Second
Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~52 chars/line (ideal 45–75 CPL).

❌ Low contrast: 37 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

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

Buy on MyFonts

Color Palette

5 unique colors
2.04:1 Fail Dark
#000000
Background· 94.2%
#443f44
Other· 1.9%
#4f6891
Primary· 1%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

2
Facebook PixelMid-Market
LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

2

Categories

4

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
11
Async
9
Defer

Top Script Sources

local(9)googletagmanager.com(6)connect.facebook.net(2)cdn.vector.co(1)snap.licdn.com(1)

Website Identity

spline.design

help@spline.design
7 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.📧 Google Workspaceen

Sponsored

Last analyzed: 26 Apr 2026 at 15:44

Historical Analysis & Change Tracking