onthiielts.com.vn

https://onthiielts.com.vn· First analyzed 03 Jun 2026· Updated 03 Jun 2026

Export

onthiielts.com.vn

Mobile

Sponsored

Hosting Provider

ODSJSC

IP Address

125.253.113.85

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Quận Tân Phú, Vietnam

ASN

AS45538

Organization

ODSJSC

Server

LiteSpeed

CDN

Cloudflare

WAF

Cloudflare

Nameservers

carmelo.ns.cloudflare.com.coraline.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%

851 KB

35 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

ODSJSC

CDN

Cloudflare

Technology Stack

12 Technologies Detected

Plugins

CSS Frameworks

UI Components

Fonts

Analytics

Tag Managers

Customer Support

Web Servers

SEO Analysis

A85/100

Meta Tags11/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T7/7

Images4/7

Links5/5

URL5/5

Social5/5

Freshness4/4

Mobile4/4

Indexability3/3

onthiielts.com.vnonthiielts.com.vn

The IELTS Workshop | Trung tâm luyện thi IELTS uy tín tại Việt Nam

The IELTS Workshop là trung tâm luyện thi IELTS uy tín hàng đầu tại Việt Nam. Trung tâm ôn luyện IELTS ứng dụng phương pháp đào tạo hiện đại, sở hữu đội ngũ ...

Description truncated.

Title Length66 chars

Recommended: 50-60 chars (~402px / 580px)

Description Length176 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (56/76) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

23 URLs

23 sub-sitemaps

robots.txt

26 rules

Sitemap reference found

Local SEO

Local Search Readiness

22/100

Needs Work

6 11 1

Sponsored

AI & LLM Readiness

C64/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

13/25

Citation

18/25

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

nav

Text ratio:3%

Words:2,392

Token eff.:Optimal

Sections/1K:0.4

Depth:1/5

Structured Data

6 JSON-LD

Article×1.2Person×1.3Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary237w

Descriptive Headingsavg 6.9w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (5)

AI readiness recommendation preview...

Upgrade to view recommendations

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.

85/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

12/15

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

7/15

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

1 recommendation

•Accessibility recommendation preview...

Upgrade to view recommendations

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.

58/100

105 mg

CO₂e / view

851.1 KB

Page Weight

80%

Cleaner Than

New Visitor

120 mg

Returning (cached)

60 mg

Annual (10K/mo)

12.6 kg

Emission Segments

Data Center

24 mg

Network

25 mg

Device

57 mg

Resource Breakdown

JavaScript

316.8 KB

Images

289.0 KB

CSS

152.3 KB

Fonts

49.6 KB

HTML

43.4 KB

Green Hosting Not Verified

ODSJSC

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

No WAF

161d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.11.2025

Valid Until

11.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

onthiielts.com.vnwww.onthiielts.com.vn

SHA-256 Fingerprint

A1:8E:EA:78:A2:D5:F4:75:D6:E4:F1:23:1A:7D:5E:6A:DD:A2:68:62...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

44119

content-type

text/html; charset=UTF-8

date

Wed, 03 Jun 2026 06:49:00 GMT

referrer-policy

no-referrer-when-downgrade

server

LiteSpeed

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

onthiielts-com-vn.mail.protection.outlook.com

Domain Information

onthiielts.com.vn

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.

73/100

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...

Upgrade to view recommendations

Typography & Readability

Commissioner + Roboto

WCAG Partial

75/100

Readability

/30

25/30

16px · LH 1.50

Hierarchy

/20

18/20

3x ratio · ✓ H1→H6

WCAG

/25

12/25

1.43:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Commissioner

Sans48px

Body Font

Roboto

Sans16px

Contrast Ratio

1.43:1

4 issues

Reading Comfort

~35 CPL

Narrow lines

48px

32px

16px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ Easy to read: Flesch score 88/100 — accessible to general audiences.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.4:1).

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

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

GGoogle Fonts Buy on MyFontsFlesch 88

Color Palette

6 unique colors

Light

#b2aea7

Other· 4.9%

#f8f9fb

Primary· 83.80000000000001%

#695b51

Secondary· 3.9%

#e8e4d7

Secondary· 3%

#f9d546

Accent· 2.9%

#dfbd7d

Accent· 1.5%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

onthiielts.com.vn(3)google.com(1)

Website Identity

The IELTS Workshop

EducationalOrganization

The IELTS Workshop là trung tâm luyện thi IELTS đầu tiên hội tụ 3 giáo viên 9.0 cùng đội ngũ giáo viên chất lượng, The IELTS Workshop giúp học viên không chỉ tự tin chinh phục bài thi IELTS, mà còn khai phá kỹ năng và tư duy để thành công trong thế giới toàn cầu.

[email protected]

1900%200353

onthiielts.com.vn/

Location detected: 🇻🇳 Vietnamvia tld

📧 Microsoft 365vi

Social Profiles

Facebook Instagram YouTube

Sponsored

Last analyzed: 03 Jun 2026 at 06:49

Historical Analysis & Change Tracking