Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

unica.vn

Unica - Học online mọi kỹ năng từ chuyên gia hàng đầu

Page Load Speed

12.8 sec in total

First Response

862 ms

Resources Loaded

11.2 sec

Page Rendered

685 ms

unica.vn screenshot

About Website

Click here to check amazing Unica content for Vietnam. Otherwise, check out these important facts you probably never knew about unica.vn

Unica.vn website học online hàng đầu Việt Nam với hơn 500.000 học viên và hơn 2.000 khóa học trực tuyến từ giảng viên, chuyên gia hàng đầu.

Visit unica.vn

Key Findings

We analyzed Unica.vn page load time and found that the first response time was 862 ms and then it took 11.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

unica.vn performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value2,860 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.028

100/100

15%

TTI (Time to Interactive)

Value33.7 s

0/100

10%

Network Requests Diagram

unica.vn

862 ms

unica.vn

1550 ms

jquery-3.2.1.min.js

678 ms

bootstrap.css

926 ms

font-awesome.css

728 ms

Our browser made a total of 152 requests to load all elements on the main page. We found that 41% of them (62 requests) were addressed to the original Unica.vn, 41% (63 requests) were made to Static.unica.vn and 3% (4 requests) were made to I.imgur.com. The less responsive or slowest element that took the longest time to load (5 sec) relates to the external source Static.unica.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (32%)

Content Size

4.7 MB

After Optimization

3.2 MB

In fact, the total size of Unica.vn main page is 4.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 298.4 kB

  • Original 328.2 kB
  • After minification 176.0 kB
  • After compression 29.8 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. This page needs HTML code to be minified as it can gain 152.2 kB, which is 46% 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 298.4 kB or 91% of the original size.

Image Optimization

-28%

Potential reduce by 1.2 MB

  • Original 4.2 MB
  • After minification 3.1 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, Unica needs image optimization as it can save up to 1.2 MB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 142 B

  • Original 40.5 kB
  • After minification 40.5 kB
  • After compression 40.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-24%

Potential reduce by 29.1 kB

  • Original 119.7 kB
  • After minification 117.2 kB
  • After compression 90.6 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. Unica.vn needs all CSS files to be minified and compressed as it can save up to 29.1 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (32%)

Requests Now

142

After Optimization

97

The browser has sent 142 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Unica. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

unica.vn accessibility score

55

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

Names and labels

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.

Impact

Issue

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

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

Impact

Issue

High

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

unica.vn best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

unica.vn SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Unica.vn 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 Unica.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

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