uhm.vn

https://uhm.vn· First analyzed 24 May 2026· Updated 24 May 2026

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uhm.vn

Mobile

Sponsored

Hosting Provider

VIETNIX Solution and Technology Joint Stock Company

IP Address

103.200.23.120

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Quận Phú Nhuận, Vietnam

ASN

AS135905

Organization

VIETNIX Solution and Technology Joint Stock Company

Server

LiteSpeed

Nameservers

nsbak.dotvndns.com.ns2.dotvndns.vn.nsbak.pavietnam.net.ns1.dotvndns.vn.

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%

590 KB

49 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

13 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

CSS Frameworks

Tailwind CSS

Bootstrap

Icon Libraries

Font Awesome Material Icons

Libraries

Fonts

Payments

Web Servers

Languages

SEO Analysis

C64/100

Meta Tags12/15

Content10/12

Headings6/8

Technical10/25

E-E-A-T3/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile3/4

Indexability3/3

uhm.vnuhm.vn

Diễn Đàn Tuổi Trẻ Việt Nam Uhm.VN | Diễn đàn tuổi trẻ Việt Nam

Chia sẻ kinh nghiệm hay, kiến thức hay, học tập, làm việc, thành công cùng tuổi trẻ VN

Title Length62 chars

Recommended: 50-60 chars (~375px / 580px)

Description Length86 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

981 URLs

981 sub-sitemaps

robots.txt

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.

Sponsored

AI & LLM Readiness

F30/100

Bot Access

20/25

Machine Read.

1/25

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

Text ratio:11%

Words:10,999

Token eff.:Excessive

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

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...

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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.

61/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

9/20

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

Forms & Inputs

8/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

12/15

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.

3 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.

37/100

73 mg

CO₂e / view

589.9 KB

Page Weight

80%

Cleaner Than

New Visitor

83 mg

Returning (cached)

42 mg

Annual (10K/mo)

8.8 kg

Emission Segments

Data Center

16 mg

Network

18 mg

Device

39 mg

Resource Breakdown

JavaScript

367.8 KB

Images

45.3 KB

CSS

8.3 KB

Fonts

8.2 KB

HTML

160.4 KB

Green Hosting Not Verified

VIETNIX Solution and Technology Joint Stock Company

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

No SSL

No WAF

nulld

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-methods

GET,POST,OPTIONS,DELETE,PUT

access-control-allow-origin

cache-control

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

connection

content-type

text/html; charset=UTF-8

date

Sun, 24 May 2026 23:22:01 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

ASPMX3.GOOGLEMAIL.COM

ALT2.ASPMX.L.GOOGLE.COM

ALT1.ASPMX.L.GOOGLE.COM

ASPMX2.GOOGLEMAIL.COM

+1 more

Domain Information

uhm.vn

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis 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.

42/100

Not Mobile Friendly13 breakpoints

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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

65/100

Readability

/30

15/30

12px · LH 1.33

Hierarchy

/20

15/20

1.5x ratio · ✓ H1→H6

WCAG

/25

17/25

2.48:1 min contrast

Performance

/25

18/25

System fonts

Heading Font

Open Sans

Sans18px

Body Font

Open Sans

Sans12px

Contrast Ratio

2.48:1

11 issues

Reading Comfort

~39 CPL

Narrow lines

18px

16px

12px

❌ 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.

✅ Easy to read: Flesch score 89/100 — accessible to general audiences.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 2.5:1).

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

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

GGoogle FontsFlesch 89

Color Palette

4 unique colors

19.91:1 AAA Dark

#090909

Background· 52.70000000000002%

#ffffff

Background· 23.7%

#4b433b

Primary· 19.4%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

uhm.vn(4)pagead2.googlesyndication.com(3)fundingchoicesmessages.google.com(2)sure.vn(2)jscripts(1)

Website Identity

uhm.vn

Location detected: 🇻🇳 Vietnamvia tld

📧 Google Workspacevi

Social Profiles

Facebook

Sponsored

Last analyzed: 24 May 2026 at 23:22

Historical Analysis & Change Tracking