Tools & Wizards About Us
sum.vn screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

sum.vn

Rút gọn link miễn phí - Web làm ngắn & Quản lý liên kết số 1 VN - Sum.vn

Page Load Speed

7.5 sec in total

First Response

993 ms

Resources Loaded

5.7 sec

Page Rendered

787 ms

sum.vn screenshot

About Website

Welcome to sum.vn homepage info - get ready to check Sum best content for Vietnam right away, or after learning these important things about sum.vn

Web rút gọn link Sum.vn là website làm ngắn link miễn phí tốt nhất hiện nay. Giúp bạn rút gọn nhiều liên kết, thống kê, gắn mã facebook pixel, chống spam...

Visit sum.vn

Key Findings

We analyzed Sum.vn page load time and found that the first response time was 993 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

sum.vn performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value13.2 s

2/100

10%

TBT (Total Blocking Time)

Value4,400 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.159

73/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

Network Requests Diagram

sum.vn

993 ms

all.min.css

1609 ms

select2.min.css

1191 ms

cookieconsent.min.css

968 ms

bootstrap.min.css

1684 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 90% of them (76 requests) were addressed to the original Sum.vn, 2% (2 requests) were made to Pagead2.googlesyndication.com and 1% (1 request) were made to Cdn.ampproject.org. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Sum.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 712.5 kB (44%)

Content Size

1.6 MB

After Optimization

893.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sum.vn main page is 1.6 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. 65% of websites need less resources to load. Images take 848.0 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 41.2 kB

  • Original 50.4 kB
  • After minification 36.7 kB
  • After compression 9.2 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. This page needs HTML code to be minified as it can gain 13.6 kB, which is 27% 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 41.2 kB or 82% of the original size.

Image Optimization

-68%

Potential reduce by 578.9 kB

  • Original 848.0 kB
  • After minification 269.0 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. Obviously, Sum needs image optimization as it can save up to 578.9 kB or 68% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-6%

Potential reduce by 34.0 kB

  • Original 536.2 kB
  • After minification 536.2 kB
  • After compression 502.2 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

-34%

Potential reduce by 58.3 kB

  • Original 171.0 kB
  • After minification 170.7 kB
  • After compression 112.7 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. Sum.vn needs all CSS files to be minified and compressed as it can save up to 58.3 kB or 34% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (51%)

Requests Now

77

After Optimization

38

  • Images
  • JavaScript
  • CSS

The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sum.vn

sum.vn

993 ms

all.min.css

all.min.css

1609 ms

select2.min.css

select2.min.css

1191 ms

cookieconsent.min.css

cookieconsent.min.css

968 ms

bootstrap.min.css

bootstrap.min.css

1684 ms

font-awesome.min.css

font-awesome.min.css

1216 ms

animate.css

animate.css

1230 ms

iconfont.css

iconfont.css

1438 ms

magnific-popup.css

magnific-popup.css

1423 ms

owl.carousel.min.css

owl.carousel.min.css

1451 ms

owl.theme.default.min.css

owl.theme.default.min.css

1469 ms

jquery-ui.structure.min.css

jquery-ui.structure.min.css

1655 ms

jquery-ui.theme.min.css

jquery-ui.theme.min.css

1673 ms

plugins.css

plugins.css

1692 ms

style.css

style.css

2429 ms

responsive.css

responsive.css

1835 ms

style-yellow.css

style-yellow.css

1887 ms

main.css

main.css

2378 ms

adsbygoogle.js

adsbygoogle.js

86 ms

amp-ad-0.1.js

amp-ad-0.1.js

35 ms

OneSignalSDK.js

OneSignalSDK.js

41 ms

api.js

api.js

63 ms

adsbygoogle.js

adsbygoogle.js

71 ms

bundle.pack.js

bundle.pack.js

1929 ms

custom.js

custom.js

1464 ms

cookieconsent.min.js

cookieconsent.min.js

1601 ms

plugins.js

plugins.js

1658 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

1700 ms

owl.carousel.min.js

owl.carousel.min.js

1830 ms

jquery.parallax-scroll.js

jquery.parallax-scroll.js

1889 ms

jquery.ajaxchimp.min.js

jquery.ajaxchimp.min.js

1937 ms

jquery.parallax.js

jquery.parallax.js

2098 ms

hostslide.js

hostslide.js

2165 ms

down.js

down.js

2164 ms

main.js

main.js

2165 ms

typed.min.js

typed.min.js

141 ms

clipboard.min.js

clipboard.min.js

2223 ms

typed.min.js

typed.min.js

2225 ms

app.min.js

app.min.js

2285 ms

server.min.js

server.min.js

2353 ms

js

js

61 ms

auto_site_logo.png

auto_site_logo.png

429 ms

banner_image.png

banner_image.png

430 ms

atp.png

atp.png

431 ms

hung-1.png

hung-1.png

469 ms

hung.png

hung.png

523 ms

banner_icon_4.png

banner_icon_4.png

596 ms

included-feature-6.png

included-feature-6.png

633 ms

included-feature-3.png

included-feature-3.png

643 ms

included-feature-4.png

included-feature-4.png

657 ms

included-feature-5.png

included-feature-5.png

695 ms

choose-us-1.png

choose-us-1.png

751 ms

choose-us-2.png

choose-us-2.png

828 ms

choose-us-3.png

choose-us-3.png

868 ms

info-img-1.png

info-img-1.png

878 ms

icon-1.png

icon-1.png

893 ms

youtube-1.png

youtube-1.png

935 ms

facebook-1.png

facebook-1.png

979 ms

atp-1.png

atp-1.png

1060 ms

electric-wave.png

electric-wave.png

1103 ms

touch.svg

touch.svg

1113 ms

lock.svg

lock.svg

1130 ms

chart.svg

chart.svg

1174 ms

support.svg

support.svg

1207 ms

setting.svg

setting.svg

1292 ms

info-img-2.png

info-img-2.png

1574 ms

ghichu.vn.png

ghichu.vn.png

1349 ms

atpweb.vn.png

atpweb.vn.png

1603 ms

finduid.com.png

finduid.com.png

1392 ms

recaptcha__vi.js

recaptcha__vi.js

82 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1558 ms

fa-v4compatibility.ttf

fa-v4compatibility.ttf

1354 ms

fa-regular-400.ttf

fa-regular-400.ttf

1415 ms

fa-brands-400.ttf

fa-brands-400.ttf

1664 ms

fa-solid-900.ttf

fa-solid-900.ttf

2455 ms

iconfont.ttf

iconfont.ttf

1803 ms

006-united-states.svg

006-united-states.svg

1529 ms

002-canada.svg

002-canada.svg

1416 ms

003-vietnam.svg

003-vietnam.svg

1466 ms

location.png

location.png

1632 ms

mail.png

mail.png

1613 ms

phone.png

phone.png

1651 ms

round.png

round.png

1614 ms

cross-out.png

cross-out.png

1688 ms

Accessibility Review

sum.vn accessibility score

84

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

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.

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

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

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

sum.vn best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

sum.vn SEO score

93

Search Engine Optimization Advices

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 Sum.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 Sum.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

sum.vn

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