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name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

23/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value640 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.082

94/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

doanxaydung.com

2247 ms

xfbml.customerchat.js

36 ms

fonts.css

1015 ms

css

64 ms

bootstrap.css

1286 ms

Our browser made a total of 101 requests to load all elements on the main page. We found that 65% of them (66 requests) were addressed to the original Doanxaydung.com, 10% (10 requests) were made to Static.xx.fbcdn.net and 6% (6 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Doanxaydung.com.

Content Size

1.0 MB

After Optimization

814.1 kB

In fact, the total size of Doanxaydung.com main page is 1.0 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. 60% of websites need less resources to load. Images take 548.5 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 88.5 kB

Original 105.2 kB
After minification 100.4 kB
After compression 16.8 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 88.5 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 28.6 kB

Original 548.5 kB
After minification 519.9 kB

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. Doanxaydung images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 84.8 kB

Original 324.6 kB
After minification 324.6 kB
After compression 239.8 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 84.8 kB or 26% of the original size.

CSS Optimization

-18%

Potential reduce by 8.3 kB

Original 46.0 kB
After minification 46.0 kB
After compression 37.6 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. Doanxaydung.com needs all CSS files to be minified and compressed as it can save up to 8.3 kB or 18% of the original size.

Requests Now

After Optimization

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doanxaydung. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

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

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

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

VI
Language Claimed

VI
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Doanxaydung.com can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Doanxaydung.com 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

doanxaydung.com

Open Graph data is detected on the main page of Doanxaydung. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

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Performance

Accessibility

Best Practices

SEO

Đồ án tốt nghiệp xây dựng Dân Dụng, Cầu Đường, Thủy Lợi, nhận làm đồ án thuê

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)