Tools & Wizards About Us
lazi.vn screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

lazi.vn

Lazi.vn - Cộng đồng tri thức & Giáo dục | Lazi.vn - Cộng đồng Tri thức & Giáo dục

Page Load Speed

10.7 sec in total

First Response

1 sec

Resources Loaded

8.7 sec

Page Rendered

939 ms

lazi.vn screenshot

About Website

Visit lazi.vn now to see the best up-to-date Lazi content for Vietnam and also check out these interesting facts you probably never knew about lazi.vn

Lazi.vn - Cộng đồng tri thức & Giáo dục - Kết nối tri thức - Giải đáp vấn đề của bạn - Tri thức - Giáo dục - Phát triển trí tuệ

Visit lazi.vn

Key Findings

We analyzed Lazi.vn page load time and found that the first response time was 1 sec and then it took 9.6 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

lazi.vn performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value18.7 s

0/100

10%

TBT (Total Blocking Time)

Value2,170 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value25.8 s

0/100

10%

Network Requests Diagram

lazi.vn

1015 ms

lazi.vn

1360 ms

auth

272 ms

lazi.vn

601 ms

my_style.css

281 ms

Our browser made a total of 164 requests to load all elements on the main page. We found that 54% of them (89 requests) were addressed to the original Lazi.vn, 24% (39 requests) were made to Cdn.lazi.vn and 2% (4 requests) were made to Cm.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (3.6 sec) relates to the external source Cdn.lazi.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 616.7 kB (28%)

Content Size

2.2 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lazi.vn main page is 2.2 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. 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 75.5 kB

  • Original 97.7 kB
  • After minification 96.7 kB
  • After compression 22.2 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 75.5 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 41.6 kB

  • Original 1.1 MB
  • After minification 1.0 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. Lazi images are well optimized though.

JavaScript Optimization

-52%

Potential reduce by 491.9 kB

  • Original 949.3 kB
  • After minification 949.3 kB
  • After compression 457.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 491.9 kB or 52% of the original size.

CSS Optimization

-14%

Potential reduce by 7.6 kB

  • Original 54.6 kB
  • After minification 54.6 kB
  • After compression 47.0 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. Lazi.vn needs all CSS files to be minified and compressed as it can save up to 7.6 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 52 (34%)

Requests Now

152

After Optimization

100

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 152 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lazi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lazi.vn

lazi.vn

1015 ms

lazi.vn

lazi.vn

1360 ms

auth

auth

272 ms

lazi.vn

lazi.vn

601 ms

my_style.css

my_style.css

281 ms

header.css

header.css

553 ms

pagination.css

pagination.css

824 ms

scroll.top.css

scroll.top.css

1029 ms

colorbox.css

colorbox.css

1033 ms

dl_menu.css

dl_menu.css

1033 ms

calendar_convert.css

calendar_convert.css

1032 ms

jquery.scrollbar.css

jquery.scrollbar.css

1041 ms

jquery.datepicker.css

jquery.datepicker.css

1095 ms

all.css

all.css

1289 ms

tab.css

tab.css

1292 ms

jquery.1.8.2.min.js

jquery.1.8.2.min.js

1552 ms

notify.min.js

notify.min.js

1291 ms

gpt.js

gpt.js

62 ms

adsbygoogle.js

adsbygoogle.js

67 ms

client

client

78 ms

gpt.js

gpt.js

61 ms

js

js

82 ms

readmore.js

readmore.js

1297 ms

adsbygoogle.js

adsbygoogle.js

106 ms

9bf31c7ff062936a96d3c8bd1f8f2ff3.js

9bf31c7ff062936a96d3c8bd1f8f2ff3.js

3590 ms

modernizr.custom.js

modernizr.custom.js

1361 ms

jquery.colorbox.js

jquery.colorbox.js

1542 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

1543 ms

jquery.scrollbar.js

jquery.scrollbar.js

1546 ms

jquery.fixer.js

jquery.fixer.js

1555 ms

jquery.iframetracker.js

jquery.iframetracker.js

1632 ms

jquery.ui.core.css

jquery.ui.core.css

709 ms

jquery.ui.datepicker.css

jquery.ui.datepicker.css

710 ms

jquery.ui.theme.css

jquery.ui.theme.css

714 ms

gtm.js

gtm.js

103 ms

1694524064_lazi_148591.jpg

1694524064_lazi_148591.jpg

1553 ms

giphy.gif

giphy.gif

186 ms

1724281960_lazi_882797.jpeg

1724281960_lazi_882797.jpeg

2061 ms

1724281519_lazi_580596.jpeg

1724281519_lazi_580596.jpeg

2063 ms

1724281511_lazi_891531.jpeg

1724281511_lazi_891531.jpeg

1812 ms

1724281547_lazi_217435.jpeg

1724281547_lazi_217435.jpeg

1955 ms

1690649612_lazi_394123.jpg

1690649612_lazi_394123.jpg

1672 ms

1724281222_lazi_508353.jpeg

1724281222_lazi_508353.jpeg

2062 ms

1724280898_lazi_481659.jpg

1724280898_lazi_481659.jpg

1954 ms

1724281202_lazi_804326.jpeg

1724281202_lazi_804326.jpeg

2068 ms

1631258243_lazi_990579.jpg

1631258243_lazi_990579.jpg

2229 ms

1641802019_lazi_631364.jpg

1641802019_lazi_631364.jpg

2230 ms

1659262261_lazi_943316.png

1659262261_lazi_943316.png

2315 ms

1724269813_lazi_865632.jpeg

1724269813_lazi_865632.jpeg

2576 ms

1724269748_lazi_808826.jpeg

1724269748_lazi_808826.jpeg

2572 ms

1724269732_lazi_728144.jpeg

1724269732_lazi_728144.jpeg

2585 ms

1722216778_lazi_555510.jpg

1722216778_lazi_555510.jpg

2508 ms

1724260608_lazi_770499.jpeg

1724260608_lazi_770499.jpeg

2787 ms

1696347339_lazi_343600.jpg

1696347339_lazi_343600.jpg

2569 ms

1713198005_lazi_365577.png

1713198005_lazi_365577.png

2787 ms

1724259763_lazi_153965.jpeg

1724259763_lazi_153965.jpeg

2844 ms

1722845058_lazi_952249.jpg

1722845058_lazi_952249.jpg

2827 ms

1724259042_lazi_462791.jpeg

1724259042_lazi_462791.jpeg

2831 ms

1724258119_lazi_290870.jpeg

1724258119_lazi_290870.jpeg

2841 ms

1724257648_lazi_221511.jpeg

1724257648_lazi_221511.jpeg

3066 ms

1723821419_lazi_911633.jpg

1723821419_lazi_911633.jpg

3066 ms

1722225268_lazi_746455.jpg

1722225268_lazi_746455.jpg

3081 ms

1722852107_lazi_872878.jpg

1722852107_lazi_872878.jpg

3085 ms

1723897428_lazi_791522.png

1723897428_lazi_791522.png

3097 ms

1721665050_lazi_189585.jpg

1721665050_lazi_189585.jpg

3096 ms

1720272595_lazi_550585.jpg

1720272595_lazi_550585.jpg

3345 ms

1722184148_lazi_203110.jpg

1722184148_lazi_203110.jpg

3344 ms

1723986686_lazi_194225.jpg

1723986686_lazi_194225.jpg

3336 ms

1721603910_lazi_989253.jpg

1721603910_lazi_989253.jpg

3339 ms

1719846517_lazi_268166.jpg

1719846517_lazi_268166.jpg

3350 ms

1724143717_lazi_852316.png

1724143717_lazi_852316.png

3353 ms

1722673829_lazi_241055.jpg

1722673829_lazi_241055.jpg

3591 ms

logo_lazi.svg

logo_lazi.svg

337 ms

menu.png

menu.png

327 ms

close.svg

close.svg

327 ms

search.png

search.png

328 ms

gift.svg

gift.svg

328 ms

1.svg

1.svg

325 ms

2.svg

2.svg

531 ms

3.svg

3.svg

535 ms

6.svg

6.svg

536 ms

4.svg

4.svg

534 ms

7.svg

7.svg

536 ms

8.svg

8.svg

606 ms

9.svg

9.svg

791 ms

10.svg

10.svg

793 ms

5.svg

5.svg

794 ms

news.svg

news.svg

795 ms

11.svg

11.svg

791 ms

p.svg

p.svg

877 ms

bxh.svg

bxh.svg

1046 ms

toan.svg

toan.svg

1048 ms

ly.svg

ly.svg

1050 ms

hoa.svg

hoa.svg

1050 ms

van.svg

van.svg

1052 ms

anh.svg

anh.svg

1147 ms

sinh.svg

sinh.svg

1302 ms

tin.svg

tin.svg

1304 ms

khoahoc.svg

khoahoc.svg

1306 ms

mythuat.svg

mythuat.svg

1307 ms

nhac.svg

nhac.svg

1311 ms

tiengviet.svg

tiengviet.svg

1417 ms

laptrinh.svg

laptrinh.svg

1558 ms

01.svg

01.svg

1561 ms

02.svg

02.svg

1564 ms

3.svg

3.svg

1562 ms

4.svg

4.svg

1570 ms

pubads_impl.js

pubads_impl.js

63 ms

2.svg

2.svg

1598 ms

publishertag.ids.js

publishertag.ids.js

171 ms

esp.js

esp.js

187 ms

pubcid.min.js

pubcid.min.js

170 ms

uid2SecureSignal.js

uid2SecureSignal.js

99 ms

sync.min.js

sync.min.js

181 ms

esp.js

esp.js

191 ms

ads

ads

892 ms

container.html

container.html

114 ms

fa-solid-900.woff

fa-solid-900.woff

1836 ms

fa-regular-400.woff

fa-regular-400.woff

1605 ms

5.svg

5.svg

1497 ms

6.svg

6.svg

1496 ms

7.svg

7.svg

1505 ms

8.svg

8.svg

1626 ms

sdk.js

sdk.js

91 ms

widgets.js

widgets.js

101 ms

map

map

74 ms

sdk.js

sdk.js

22 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

37 ms

settings

settings

75 ms

esp

esp

39 ms

9.svg

9.svg

1552 ms

10.svg

10.svg

1546 ms

11.svg

11.svg

1557 ms

bxh.svg

bxh.svg

1652 ms

logo.png

logo.png

1696 ms

pd

pd

37 ms

1ef465f2-cf4b-e8bb-e199-f27e4f20e8a4

1ef465f2-cf4b-e8bb-e199-f27e4f20e8a4

41 ms

openx

openx

31 ms

pixel

pixel

46 ms

pixel

pixel

47 ms

traloi.svg

traloi.svg

2012 ms

openx

openx

3 ms

sd

sd

23 ms

dcm

dcm

22 ms

pixel

pixel

19 ms

pixel

pixel

19 ms

sd

sd

7 ms

thinking.svg

thinking.svg

1547 ms

hand.svg

hand.svg

1557 ms

ans.svg

ans.svg

1623 ms

loadmore.svg

loadmore.svg

1650 ms

gift.png

gift.png

1707 ms

chart.png

chart.png

1718 ms

eds_300_250.png

eds_300_250.png

2080 ms

download_android_app.svg

download_android_app.svg

1625 ms

download_ios_app.svg

download_ios_app.svg

1650 ms

one.svg

one.svg

1721 ms

three.svg

three.svg

1798 ms

two.svg

two.svg

1727 ms

border.png

border.png

1625 ms

controls.png

controls.png

1652 ms

1723710092_lazi_109719.jpg

1723710092_lazi_109719.jpg

2043 ms

1723098258_lazi_790867.jpg

1723098258_lazi_790867.jpg

1954 ms

1724120025_lazi_795238.jpg

1724120025_lazi_795238.jpg

1815 ms

Accessibility Review

lazi.vn accessibility score

62

Accessibility Issues

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.

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

lazi.vn best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

lazi.vn SEO score

86

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

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

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 Lazi.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 Lazi.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

lazi.vn

Open Graph description is not detected on the main page of Lazi. 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: