kiemdinhvung3.com

https://kiemdinhvung3.com· First analyzed 28 May 2026· Updated 28 May 2026

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kiemdinhvung3.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.11.28

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

emma.ns.cloudflare.com.algin.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.8 MB

61 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

7 Technologies Detected

Analytics

UI Components

CSS Frameworks

Icon Libraries

CDN

Customer Support

SEO Analysis

D52/100

Meta Tags10/15

Content12/12

Headings1/8

Technical8/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

kiemdinhvung3.comkiemdinhvung3.com

KIỂM ĐỊNH, HIỆU CHUẨN - TRUNG TÂM KIỂM ĐỊNH HIỆU CHUẨN VÙNG 3 (CTCR3)

Trung tâm Kiểm định hiệu chuẩn vùng 3 chuyên thực hiện các chức năng Kiểm định - Hiệu chuẩn phương tiện đo lường (Cân, áp kế, nhiệt kế,...), Kiểm định an toà...

Description truncated.

Title Length69 chars

Recommended: 50-60 chars (~430px / 580px)

Description Length281 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (41/41) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Allows all crawlers

Local SEO

Local Search Readiness

5/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D40/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

12/25

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:11%

Words:2,402

Token eff.:Optimal

Sections/1K:1.2

Structured Data

No Schema

Citation Readiness

Opening Summary35w

Descriptive Headingsavg 14.7w

Canonical URL

Open Graph3/3

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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Sponsored

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.

47/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

4/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

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

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

6 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.

18/100

597 mg

CO₂e / view

5.8 MB

Page Weight

Cleaner Than

New Visitor

683 mg

Returning (cached)

341 mg

Annual (10K/mo)

71.7 kg

Emission Segments

Data Center

29 mg

Network

176 mg

Device

393 mg

Resource Breakdown

JavaScript

109.7 KB

Images

5.1 MB

CSS

579.9 KB

HTML

32.7 KB

Green Hosting Verified

Cloudflare

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

01.05.2026

Valid Until

30.07.2026

Subject Alternative Names (2)

*.kiemdinhvung3.comkiemdinhvung3.com

SHA-256 Fingerprint

D7:5F:25:A8:55:C1:94:24:5D:FC:BF:5A:3D:92:0C:04:5F:B3:2C:1A...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟣 Private(private)

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

a02dc8c9ba2c040b-CDG

content-encoding

zstd

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mail9061.maychuemail.com

mx9061.maychuemail.net

Domain Information

kiemdinhvung3.com

Domain Age

6y 5m

Created

20.12.2019

Expires

20.12.2026

Last Updated

03.03.2026

Registrar

P.A. Viet Nam Company Limited

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

48/100

Not 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, user-scalable=yes

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG AA

62/100

Readability

/30

21/30

16px · LH 1.38

Hierarchy

/20

5/20

WCAG

/25

19/25

6.73:1 min contrast

Performance

/25

17/25

System fonts

Heading Font

Roboto

Sans

Body Font

Roboto

Sans16px

Contrast Ratio

6.73:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines

16px

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

⚠️ Tight line spacing (1.38). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.7:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Flesch 0

Color Palette

12 unique colors

2.63:1 Fail Light

#ffffff

Background· 36.1%

#a89d9f

Other· 4%

#89b8fa

Primary· 21.299999999999997%

#679ae3

Accent· 7.7%

#d1b883

Secondary· 6.4%

#473d4f

Secondary· 5.6%

#75768f

Secondary· 4.2%

#b7d2ed

Accent· 3.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)googletagmanager.com(1)

Website Identity