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socket.io

https://socket.io· First analyzed 25 Apr 2026· Updated 25 Apr 2026
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socket.io
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Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.61

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns1.automattic.com.ns2.automattic.com.ns4.automattic.com.ns3.automattic.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
600 ms10%
Speed Index
780 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
545 KB
181 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Docusaurusv2.4.3
Infrastructure
Platform
Vercel

Technology Stack

5 Technologies Detected

Frameworks

1
Angular

Other

1
Socket.io

CSS Frameworks

1
Tailwind CSS

Reviews

1
Trustpilot

Platforms

1
Vercel

SEO Analysis

D59/100
18
7
1
Meta Tags4/15
Content8/12
Headings5/8
Technical17/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
S
socket.iosocket.io

Socket.IO

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars (~54px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

216 URLs

robots.txt

Local SEO

Local Search Readiness

12/100
Poor
4 12 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

F34/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
Citation
9/25

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:2%
Words:228
Token eff.:Too Short
Sections/1K:26.3
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary16w
Descriptive Headingsavg 1.7w
Canonical URL
Open Graph1/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A
89/100
15
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
17/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
79/100
A
55 mg
CO₂e / view
544.9 KB
Page Weight
80%
Cleaner Than
New Visitor
63 mg
vs
Returning (cached)
31 mg
Annual (10K/mo)
6.6 kg
Emission Segments
Data Center
3 mg
Network
16 mg
Device
36 mg
Resource Breakdown
JavaScript
280.8 KB
Images
229.3 KB
CSS
19.9 KB
HTML
15.0 KB
Green Hosting Verified
Vercel
Provider Match
1 recommendation
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

57d

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

23.03.2026

Valid Until

21.06.2026

Subject Alternative Names (1)

socket.io

SHA-256 Fingerprint

C3:E4:B0:6B:FF:ED:D0:70:43:9E:D9:31:26:92:74:FC:CC:81:0C:CB...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin
*
age
11423
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

socket.io

Domain Age
16 years

Created

18.04.2010

Expires

18.04.2027

Last Updated

22.03.2025

Registrar

MarkMonitor 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.
C
62/100
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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
77/100
Readability
/30
25/30

16px · LH 1.65

Hierarchy
/20
15/20

2x ratio

WCAG
/25
17/25

2.26:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

-apple-system

Sans32px

Body Font

-apple-system

Sans16px

Contrast Ratio

2.26:1

13 issues

Reading Comfort

~35 CPL

Narrow lines
32px
h1
20px
h3
16px
p

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

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

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 2.3:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

Flesch 43

Color Palette

7 unique colors
10.23:1 AAA Light
#ffffff
Background· 86.29999999999998%
#394341
Secondary· 1.7%
#24c29f
Primary· 4.6%
#97ada9
Secondary· 2.7%
#d7e1e0
Secondary· 2%
#5dc3ad
Secondary· 0.2%

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

2
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

local(2)

Website Identity

socket.io

16 years old
Location detected: 🇺🇸 United Statesvia ip
MarkMonitor Inc.en

Sponsored

Last analyzed: 25 Apr 2026 at 11:40

Historical Analysis & Change Tracking