10.3 sec in total
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
We analyzed Sum.vn page load time and found that the first response time was 724 ms and then it took 9.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
sum.vn performance score
Our browser made a total of 135 requests to load all elements on the main page. We found that 59% of them (79 requests) were addressed to the original Sum.vn, 7% (10 requests) were made to Tpc.googlesyndication.com and 7% (9 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Sum.vn.
Page size can be reduced by 1.0 MB (66%)
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. 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 1.0 MB which makes up the majority of the site volume.
Potential reduce by 50.9 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 11.9 kB, which is 19% 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 50.9 kB or 80% of the original size.
Potential reduce by 681.9 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. Obviously, Sum needs image optimization as it can save up to 681.9 kB or 67% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 278.3 kB
Potential reduce by 10.2 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 has all CSS files already compressed.
Number of requests can be reduced by 69 (56%)
sum.vn accessibility score
[aria-*] attributes do not match their roles
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Names and labels
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
These are opportunities to improve keyboard navigation in your application.
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.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
sum.vn best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Page has valid source maps
sum.vn SEO score
Document uses legible font sizes
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.
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: