vtc.vn

https://vtc.vn· First analyzed 28 Apr 2026· Updated 28 Apr 2026

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vtc.vn

Mobile

Sponsored

Hosting Provider

VTC - Multimedia Corporation

IP Address

117.103.197.46

Site Location

🇻🇳 Hà Nội, Vietnamvia schema

Server Location

🇻🇳 Vinhomes Times City, Vietnam

ASN

AS38248

Organization

VTC - Multimedia Corporation

Nameservers

dns1.vtc.vn.dns3.vtc.vn.dns2.vtc.vn.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

633 KB

84 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Hosting

VTC - Multimedia Corporation

Technology Stack

6 Technologies Detected

Analytics

Meta Frameworks

Libraries

CSS Frameworks

SEO Analysis

C69/100

Meta Tags10/15

Content10/12

Headings3/8

Technical20/25

E-E-A-T0/7

Images6/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

vtc.vnvtc.vn

Trang thông tin tổng hợp về tổng công ty VTC

Title Length44 chars

Recommended: 50-60 chars (~270px / 580px)

Description Length44 chars

Recommended: 120-160 chars

Issues (1)

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

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

12 URLs

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

53/100

Fair

13 9

Sponsored

AI & LLM Readiness

D50/100

Bot Access

20/25

Machine Read.

17/25

Schema Data

2/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:7%

Words:2,827

Token eff.:Optimal

Sections/1K:1.4

Structured Data

1 JSON-LD

LocalBusiness×1.1

Citation Readiness

Opening Summary12w

Descriptive Headingsavg 8.7w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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

20/20

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

Forms & Inputs

5/15

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

5/15

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.

62/100

78 mg

CO₂e / view

632.6 KB

Page Weight

80%

Cleaner Than

New Visitor

89 mg

Returning (cached)

45 mg

Annual (10K/mo)

9.4 kg

Emission Segments

Data Center

18 mg

Network

19 mg

Device

42 mg

Resource Breakdown

JavaScript

401.7 KB

CSS

211.9 KB

HTML

19.0 KB

Green Hosting Not Verified

VTC - Multimedia Corporation

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

260d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

12.12.2025

Valid Until

13.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.vtc.org.vnvtc.org.vn

SHA-256 Fingerprint

61:AD:68:EE:83:2A:D3:42:1D:A4:7C:4F:45:E1:C9:91:F0:1A:EF:97...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 28 Apr 2026 14:59:18 GMT

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

emsg.mail.vtc.vn

Domain Information

vtc.vn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

70/100

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, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

PoppinsRegular

WCAG Partial

51/100

Readability

/30

23/30

18px · LH 1.56

Hierarchy

/20

10/20

0.89x ratio · ✓ H1→H6

WCAG

/25

9/25

1:1 min contrast

Performance

/25

9/25

3 fonts · 4 req

Heading Font

PoppinsRegular

Sans16px

Body Font

PoppinsRegular

Sans18px

Contrast Ratio

1:1

4 issues

Reading Comfort

~38 CPL

Narrow lines

16px

60px

48px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.56 ratio (ideal range 1.4–1.6).

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

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 100

Color Palette

1 unique colors

Light

#ffffff

Background· 100%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)cdnmedia.vtcgame.vn(3)googletagmanager.com(1)

Website Identity

Tổng công ty Truyền thông đa phương tiện - VTC

LocalBusiness

vtcfamily@vtc.vn

02444501115

vtc.org.vn/

Tòa nhà 67B Hàm Long, P. Hàng Bài, Q.Hoàn Kiếm, Hà Nội., Hà Nội

10000, Hà Nội

Location detected: 🇻🇳 Vietnam, Hà Nộivia schema

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Last analyzed: 28 Apr 2026 at 14:59

Historical Analysis & Change Tracking