Access van.ehoadon.vn. Hóa đơn điện tử - Bkav eHoadon. Khởi tạo, lập, phát hành hóa đơn hoàn toàn trực tuyến

name

value

score

weighting

FCP (First Contentful Paint)

Value9.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value15.5 s

0/100

10%

TBT (Total Blocking Time)

Value280 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

van.ehoadon.vn

1071 ms

Common.js

265 ms

jquery.min.js

796 ms

jquery-ui.min.js

1321 ms

jquery-ui.css

793 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 70% of them (47 requests) were addressed to the original Van.ehoadon.vn, 21% (14 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Gstatic.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Van.ehoadon.vn.

Content Size

657.5 kB

After Optimization

545.6 kB

In fact, the total size of Van.ehoadon.vn main page is 657.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 490.5 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 24.9 kB

Original 33.2 kB
After minification 29.0 kB
After compression 8.3 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 4.2 kB, which is 13% 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 24.9 kB or 75% of the original size.

Image Optimization

-4%

Potential reduce by 2.8 kB

Original 72.5 kB
After minification 69.7 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. Van EHoadon images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 63.3 kB

Original 490.5 kB
After minification 488.9 kB
After compression 427.1 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 63.3 kB or 13% of the original size.

CSS Optimization

-34%

Potential reduce by 20.9 kB

Original 61.3 kB
After minification 61.3 kB
After compression 40.5 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. Van.ehoadon.vn needs all CSS files to be minified and compressed as it can save up to 20.9 kB or 34% of the original size.

Requests Now

After Optimization

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Van EHoadon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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 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

Image elements do not have [alt] attributes

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.

These are opportunities to improve keyboard navigation in your application.

High

Some elements have a [tabindex] value greater than 0

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

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

High

robots.txt is not valid

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

High

Image elements do not have [alt] attributes

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 doesn't use legible font sizes

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 Van.ehoadon.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 Van.ehoadon.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

van.ehoadon.vn

Open Graph description is not detected on the main page of Van EHoadon. 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

Hóa đơn điện tử - Bkav eHoadon. Khởi tạo, lập, phát hành hóa đơn hoàn toàn trực tuyến

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

van.ehoadon.vn

Common.js

jquery.min.js

jquery-ui.min.js

jquery-ui.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

van.ehoadon.vn

Common.js

jquery.min.js

jquery-ui.min.js

jquery-ui.css

jbase-html.js

jbase.js

bootstrap.min.js

bootstrap.css

BSS.js

bkavcss.css

BSS.css

moment.min.js

bootstrap-datetimepicker.js

api.js

jquery.isloading.css

jquery.isloading.js

font-awesome.css

Login.css

Login.css

Login.js

Base64Utils.js

json2.js

jquery.xml2json.js

xml2json.js

json2xml.js

platform.min.js

BkavCAPlugin.js

CheckBrowser.js

SetLicenseKey.js

FunctionSign.js

ShowMessage.js

GetCertList.js

CheckEnvironmentSign.js

Certificate.css

chat.css

chat.js

WebResource.axd

recaptcha__vi.js

background.jpg

EHD.svg

lang.png

tooltips-trang-dang-nhap.png