27.1 sec in total
3.7 sec
22.8 sec
562 ms
Welcome to dataunion.org homepage info - get ready to check Dataunion best content for China right away, or after learning these important things about dataunion.org
数据科学家联盟(数盟社区)是一个开放的数据科学交流社区,专注于数据科学技术、理念的推广应用,致力于成为培养与发现“数据科学家”的黄埔军校。 数盟主要关注大数据、数据挖掘、数据分析、数据可视化等领域,倡导“数据价值的发现与应用”,助力企业、个人提升价值。
Visit dataunion.orgWe analyzed Dataunion.org page load time and found that the first response time was 3.7 sec and then it took 23.3 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
dataunion.org performance score
name
value
score
weighting
Value2.8 s
55/100
10%
Value3.9 s
53/100
25%
Value2.8 s
95/100
10%
Value1,370 ms
16/100
30%
Value0
100/100
15%
Value8.1 s
42/100
10%
3733 ms
745 ms
1379 ms
1675 ms
1671 ms
Our browser made a total of 45 requests to load all elements on the main page. We found that 84% of them (38 requests) were addressed to the original Dataunion.org, 2% (1 request) were made to Yzipi.com and 2% (1 request) were made to S11.cnzz.com. The less responsive or slowest element that took the longest time to load (10 sec) relates to the external source Cnzz.mmstat.com.
Page size can be reduced by 417.9 kB (46%)
899.8 kB
481.9 kB
In fact, the total size of Dataunion.org main page is 899.8 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. 25% of websites need less resources to load. Images take 488.0 kB which makes up the majority of the site volume.
Potential reduce by 26.0 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 26.0 kB or 74% of the original size.
Potential reduce by 127.2 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, Dataunion needs image optimization as it can save up to 127.2 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 199.8 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 199.8 kB or 67% of the original size.
Potential reduce by 64.9 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. Dataunion.org needs all CSS files to be minified and compressed as it can save up to 64.9 kB or 82% of the original size.
Number of requests can be reduced by 19 (44%)
43
24
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dataunion. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
dataunion.org
3733 ms
yzipc.css
745 ms
yziipad.css
1379 ms
iphone.css
1675 ms
iphone2.css
1671 ms
crayon.min.css
1715 ms
style.css
1941 ms
es-widget.css
2063 ms
jquery.js
3784 ms
jquery-migrate.min.js
4688 ms
crayon.min.js
7909 ms
html5shiv.js
2414 ms
css3-mediaqueries.js
3023 ms
selectivizr-min.js
4010 ms
jquery.1.11.1.js
4120 ms
main.js
3565 ms
es-widget.js
2814 ms
es-widget-page.js
3067 ms
n.png
6681 ms
wp-embed.min.js
3275 ms
Qcon2016.jpg
5006 ms
logo.png
3954 ms
f2deb48f8c5494ee52e0d5242ef5e0fe98257ec9-150x150.png
3980 ms
2b6002390908d02ca6e-150x120.jpg
3868 ms
QQ%E6%88%AA%E5%9B%BE20150129192912_%E5%89%AF%E6%9C%AC-150x150.png
4284 ms
130421921620305182-150x150.jpg
5572 ms
2016040714281332-150x150.jpg
4515 ms
1460070156-150x150.jpg
4530 ms
u2160460483802920138fm21gp0-150x150.jpg
4810 ms
104847nyzninq7tio9sgv6-150x150.jpg
5068 ms
dtcc.png
8058 ms
weixin1.jpg
5606 ms
weibo.png
5540 ms
weixin.png
5581 ms
2014-12-06-1515289049.png
7305 ms
wp-emoji-release.min.js
5976 ms
search.png
594 ms
xxx.gif
591 ms
cmt.png
657 ms
z_stat.php
720 ms
stat.htm
175 ms
core.php
604 ms
9.gif
10040 ms
pic.gif
810 ms
app.gif
821 ms
dataunion.org accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Form elements do not have associated labels
Links do not have a discernible name
dataunion.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
dataunion.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Document uses legible font sizes
Tap targets are not sized appropriately
N/A
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dataunion.org can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Dataunion.org 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.
dataunion.org
Open Graph description is not detected on the main page of Dataunion. 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: