rongbay.com

https://rongbay.com· First analyzed 09 May 2026· Updated 09 May 2026

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rongbay.com

Mobile

Sponsored

Hosting Provider

Vietnam Posts and Telecommunications Group

IP Address

123.30.242.70

Site Location

🇻🇳 Vietnamvia ip

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS135905

Organization

Vietnam Posts and Telecommunications Group

Nameservers

ns7.synerfy.vn.ns8.synerfy.vn.ns6.synerfy.vn.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.8 s10%

Speed Index

3.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

764 KB

141 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Blogger

Technology Stack

7 Technologies Detected

Libraries

CSS Frameworks

Analytics

Icon Libraries

SEO Analysis

B70/100

Meta Tags13/15

Content12/12

Headings8/8

Technical16/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

rongbay.comrongbay.com

Rao vặt toàn quốc, thông tin rao vặt miễn phí | Rongbay.com

Rao vặt toàn quốc - Trang thông tin rao vặt miễn phí toàn quốc không cần đăng ký.

Title Length59 chars

Recommended: 50-60 chars (~360px / 580px)

Description Length81 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (15/26) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

10 issues found

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Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 14 1

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.

7/25

Schema Data

3/25

Citation

10/25

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:3%

Words:2,539

Token eff.:Optimal

Structured Data

1 JSON-LD

WebSiteBreadcrumbListmicrodata

Citation Readiness

Opening Summary10w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

33/100

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

3/15

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

5/15

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.

5 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.

35/100

94 mg

CO₂e / view

763.5 KB

Page Weight

80%

Cleaner Than

New Visitor

108 mg

Returning (cached)

54 mg

Annual (10K/mo)

11.3 kg

Emission Segments

Data Center

21 mg

Network

23 mg

Device

51 mg

Resource Breakdown

JavaScript

359.7 KB

Images

178.4 KB

CSS

175.1 KB

HTML

50.4 KB

Green Hosting Not Verified

Vietnam Posts and Telecommunications Group

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

76d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.04.2026

Valid Until

25.07.2026

Subject Alternative Names (2)

*.rongbay.comrongbay.com

SHA-256 Fingerprint

4C:87:2D:B8:85:60:46:40:DD:88:E0:74:F8:71:4F:C4:3D:A7:CC:2D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-credentials

true

access-control-allow-origin

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sat, 09 May 2026 09:21:33 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (7)

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx4.googlemail.com

aspmx3.googlemail.com

+3 more

Domain Information

rongbay.com

Domain Age

19y 2m

Created

08.03.2007

Expires

08.03.2027

Last Updated

08.01.2024

Registrar

Network Solutions, LLC

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.

32/100

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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial

WCAG Partial

53/100

Readability

/30

8/30

12px · LH 2.08

Hierarchy

/20

9/20

1.33x ratio

WCAG

/25

16/25

4.12:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Arial

Sans16px

Body Font

Arial

Sans12px

Contrast Ratio

4.12:1

2 issues

Reading Comfort

~75 CPL

Wide lines

16px

15px

18px

15px

12px

Minor Second

Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (2.08). 1.4–1.6 is optimal for body text.

⚠️ Wide lines: ~75 chars/line. Use max-width: 65ch for comfortable reading.

✅ Easy to read: Flesch score 79/100 — accessible to general audiences.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 4.1:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

Flesch 79

Color Palette

7 unique colors

11.06:1 AAA Light

#ffffff

Background· 28.200000000000003%

#413a3e

Other· 4.4%

#e5ecf4

Background· 52.10000000000001%

#2470aa

Primary· 4.9%

#86b3c8

Secondary· 4%

#e0d9c5

Secondary· 3.9%

#5d7a8c

Secondary· 2.3%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

media1.admicro.vn(8)static16.rongbaycdn.com(5)connect.facebook.net(3)lg1.logging.admicro.vn(1)crm.bizfly.vn(1)

Website Identity

Rao vặt Rồng Bay

lienhe@rongbay.com

rongbay.com/

19 years old

Location detected: 🇻🇳 Vietnamvia ip

Network Solutions, LLC📧 Google Workspace

Social Profiles

Facebook

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Last analyzed: 09 May 2026 at 09:22

Historical Analysis & Change Tracking