linkhay.com

https://linkhay.com· First analyzed 28 Apr 2026· Updated 28 Apr 2026

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linkhay.com

Mobile

Sponsored

Hosting Provider

Vietnam Posts and Telecommunications Group

IP Address

123.30.151.97

Site Location

🇻🇳 Vietnamvia ip

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS45899

Organization

Vietnam Posts and Telecommunications Group

Nameservers

ns7.synerfy.vn.ns8.synerfy.vn.ns6.synerfy.vn.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

299 ms10%

Speed Index

389 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 KB

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Vietnam Posts and Telecommunications Group

SEO Analysis

F33/100

Meta Tags4/15

Content1/12

Headings6/8

Technical10/21

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

linkhay.comlinkhay.com

503 Service Unavailable

No description available for this page.

Title Length23 chars

Recommended: 50-60 chars (~133px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Very thin content (34 words). Search engines need substantial content for ranking.

9 issues found

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Local SEO

Local Search Readiness

3/100

Poor

1 14 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

F27/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

3/25

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

Text ratio:9%

Words:31

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

14/20

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.

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.

50/100

A+

<0.001 g

CO₂e / view

2.7 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

36 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

2.7 KB

Green Hosting Not Verified

Vietnam Posts and Telecommunications Group

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

No SSL

No WAF

N/A

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

content-type

text/html; charset=utf-8

retry-after

300

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

alert.vcmedia.vn

Domain Information

linkhay.com

Domain Age

18y 1m

Created

03.03.2008

Expires

03.03.2027

Last Updated

03.01.2024

Registrar

Network Solutions, 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.

61/100

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...

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Typography & Readability

-apple-system

WCAG Partial

79/100

Readability

/30

22/30

16px · LH --

Hierarchy

/20

19/20

2x ratio · ✓ H1→H6

WCAG

/25

18/25

3.94:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Sans32px

Body Font

-apple-system

Sans16px

Contrast Ratio

3.94:1

2 issues

Reading Comfort

~35 CPL

Narrow lines

32px

16px

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

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 3.9:1).

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

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

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

Color Palette

6 unique colors

Light

#ffffff

Background· 25.800000000000004%

#7dddfe

Primary· 33.900000000000006%

#6eb5fc

Accent· 28.099999999999998%

#70a6e8

Accent· 1.3%

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Website Identity

linkhay.com

18 years old

Location detected: 🇻🇳 Vietnamvia ip

Network Solutions, LLCen

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Last analyzed: 28 Apr 2026 at 05:04

Historical Analysis & Change Tracking