Access citylight.com.vn. Đèn cao áp Citylight | Đèn hàng hải

name

value

score

weighting

FCP (First Contentful Paint)

Value7.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value24.6 s

0/100

25%

SI (Speed Index)

Value15.9 s

0/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.197

63/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

citylight.com.vn

1531 ms

ga.js

10 ms

nivo-slider.css

506 ms

skin.css

535 ms

default.css

539 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 97% of them (67 requests) were addressed to the original Citylight.com.vn, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.9 sec) belongs to the original domain Citylight.com.vn.

Content Size

4.2 MB

After Optimization

3.4 MB

In fact, the total size of Citylight.com.vn main page is 4.2 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 48.3 kB

Original 57.9 kB
After minification 44.5 kB
After compression 9.6 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 13.3 kB, which is 23% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 48.3 kB or 83% of the original size.

Image Optimization

-15%

Potential reduce by 577.9 kB

Original 3.9 MB
After minification 3.3 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, CITYLIGHT needs image optimization as it can save up to 577.9 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 152.1 kB

Original 218.2 kB
After minification 170.5 kB
After compression 66.1 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 152.1 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 29.0 kB

Original 35.2 kB
After minification 21.4 kB
After compression 6.2 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Citylight.com.vn needs all CSS files to be minified and compressed as it can save up to 29.0 kB or 82% of the original size.

Requests Now

After Optimization

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CITYLIGHT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

VI
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Citylight.com.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Citylight.com.vn main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

citylight.com.vn

Open Graph description is not detected on the main page of CITYLIGHT. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

Đèn cao áp Citylight | Đèn hàng hải | Điện công nghiệp - CITYLIGHT

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

citylight.com.vn

ga.js

nivo-slider.css

skin.css

default.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

citylight.com.vn

ga.js

nivo-slider.css

skin.css

default.css

dark.css

superfish.css

superfish-vertical.css

blueberry.css

jquery.lightbox-0.5.css

jquery.simplyscroll.css

master.css

jquery-1.5.1.min.js

jquery.jcarousel.js

jquery.corner.js

SlideAd.js

jquery.nivo.slider.js

hoverIntent.js

superfish.js

jquery.blueberry.js

jquery.lightbox-0.5.min.js

jquery.simplyscroll.min.js

MyLibrary.js

__utm.gif

header.png

logo.png

vietnam.png

english.png

Navigation10.jpg

banner5-1.jpg

banner6.jpg

Highbay-1.jpg

Flood%20light.jpg

banner-1-new.jpg

Den%20cargo%20ham%20hang.jpg

Den%20pha%20led%2030W.jpg

den%20op%20tran%20kin%20nuoc.jpg

Den%20pha%20luong%20TG27.jpg

Tang%20pho%20Universal%201000W.jpg

Den%20duong%20cao%20ap.jpg

den%20hanh%20trinh%20man%20trai%20CXH2-11p.jpg

Son%20cach%20dien%20.jpg

Den%20pha%20cao%20ap%20400W.jpg