waka.vn

https://waka.vn· First analyzed 14 May 2026· Updated 14 May 2026

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waka.vn

Mobile

Sponsored

Hosting Provider

Viettel Group

IP Address

125.212.227.6

Site Location

🇻🇳 Hà Nội, Vietnamvia schema_nap

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS38731

Organization

Viettel Group

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

nicole.ns.cloudflare.com.igor.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.6 s10%

Speed Index

3.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

130 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Viettel Group

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Google Ads Google AdSense

Meta Frameworks

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

C67/100

Meta Tags12/15

Content3/12

Headings8/8

Technical22/25

E-E-A-T2/7

Images4/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile1/4

Indexability3/3

waka.vnwaka.vn

Đọc sách online – Thư viện sách nói, ebook, sách giấy giá hời tại Waka

Ebook, audiobook và sách giấy tất cả trên một ứng dụng. Truyện ngôn tình, self-help, truyện tranh. Đọc offline, không quảng cáo. Thử miễn phí.

Title Length70 chars

Recommended: 50-60 chars (~414px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (15 words). Search engines need substantial content for ranking.

7 issues found

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Crawlability

Sitemap

Type: standard

11 URLs

robots.txt

7 rules

Sitemap reference found

Local SEO

Local Search Readiness

24/100

Needs Work

6 15

Sponsored

AI & LLM Readiness

D40/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

Citation

5/25

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:0%

Words:430

Token eff.:Optimal

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph1/3

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.

64/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

7/15

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.

2 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.

17/100

379 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

433 mg

Returning (cached)

216 mg

Annual (10K/mo)

45.4 kg

Emission Segments

Data Center

85 mg

Network

91 mg

Device

203 mg

Resource Breakdown

JavaScript

1.6 MB

Images

714.9 KB

CSS

587.0 KB

HTML

92.8 KB

Other

18.0 KB

Green Hosting Not Verified

Viettel Group

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

31%Critical

Interactive

HTTPS

No WAF

157d

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

03.04.2026

Valid Until

19.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.waka.vnwaka.vn

SHA-256 Fingerprint

21:0B:ED:76:4F:92:2A:DF:53:AE:9F:17:FB:A0:12:E6:AF:90:D9:11...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

none

access-control-allow-credentials

true

access-control-allow-headers

Version, Phone, Platform, Cache, Device-Model, Refresh-Token...

access-control-allow-methods

GET,POST,PUT,DELETE,OPTIONS

access-control-allow-origin

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (10)

aspmx5.googlemail.com

iredmail.vega.vn

aspmx2.googlemail.com

aspmx4.googlemail.com

+6 more

Domain Information

waka.vn

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.

69/100

Mobile Friendly57 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.

Viewport

width=device-width, initial-scale=1,minimum-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Netflix Sans

WCAG Partial

60/100

Readability

/30

19/30

13px · LH 1.50

Hierarchy

/20

7/20

1.23x ratio

WCAG

/25

19/25

1:1 min contrast

Performance

/25

15/25

1 font · 3 req

Heading Font

Netflix Sans

Sans16px

Body Font

Netflix Sans

Sans13px

Contrast Ratio

1:1

2 issues

Reading Comfort

Single Font Family

left aligned

16px

26px

13px

Golden Ratio

Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Easy to read: Flesch score 98/100 — accessible to general audiences.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

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

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

Buy on MyFontsFlesch 98

Color Palette

7 unique colors

Dark

#121214

Primary· 92.9%

#d40302

Accent· 3.9%

#9ab18a

Secondary· 1.6%

#83604d

Secondary· 1%

#6f080a

Accent· 0.4%

#7c271e

Accent· 0.2%

#2e1212

Secondary· 0.2%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

waka.vn(9)connect.facebook.net(3)pagead2.googlesyndication.com(2)googletagmanager.com(2)za.zdn.vn(1)

Website Identity

Công ty cổ phần Sách điện tử Waka

Organization

Waka là nền tảng sách điện tử và sách nói bản quyền hàng đầu Việt Nam, cung cấp kho ebook và audiobook phong phú, được cấp phép đầy đủ, cho phép đọc và nghe sách mọi lúc, mọi nơi trên mọi thiết bị.

waka.vn/

Tầng 6, Tháp văn phòng quốc tế Hòa Bình, số 106 đường Hoàng Quốc Việt, Phường Nghĩa Đô, Thành phố Hà Nội, Việt Nam, Hà Nội

100000, Hà Nội, Hà Nội

Location detected: 🇻🇳 Vietnam, Hà Nộivia schema_nap

📧 Google Workspacevi

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Last analyzed: 14 May 2026 at 08:56

Historical Analysis & Change Tracking