16.3 sec in total
2.3 sec
13.9 sec
128 ms
Welcome to expressjs.com.cn homepage info - get ready to check Express Js best content for China right away, or after learning these important things about expressjs.com.cn
Visit expressjs.com.cnWe analyzed Expressjs.com.cn page load time and found that the first response time was 2.3 sec and then it took 14 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
expressjs.com.cn performance score
name
value
score
weighting
Value3.6 s
32/100
10%
Value3.6 s
61/100
25%
Value5.1 s
61/100
10%
Value100 ms
98/100
30%
Value0
100/100
15%
Value4.6 s
81/100
10%
2317 ms
1972 ms
2139 ms
745 ms
823 ms
Our browser made a total of 23 requests to load all elements on the main page. We found that 61% of them (14 requests) were addressed to the original Expressjs.com.cn, 17% (4 requests) were made to Fontstatic.useso.com and 9% (2 requests) were made to Cdn.bootcss.com. The less responsive or slowest element that took the longest time to load (6.6 sec) relates to the external source Fontstatic.useso.com.
Page size can be reduced by 52.0 kB (42%)
123.3 kB
71.3 kB
In fact, the total size of Expressjs.com.cn main page is 123.3 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. Javascripts take 50.1 kB which makes up the majority of the site volume.
Potential reduce by 7.9 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 3.9 kB, which is 37% 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 7.9 kB or 76% of the original size.
Potential reduce by 8.0 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, Express Js needs image optimization as it can save up to 8.0 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 14.4 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 14.4 kB or 29% of the original size.
Potential reduce by 21.7 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. Expressjs.com.cn needs all CSS files to be minified and compressed as it can save up to 21.7 kB or 67% of the original size.
Number of requests can be reduced by 9 (53%)
17
8
The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Express Js. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
expressjs.com.cn
2317 ms
www.expressjs.com.cn
1972 ms
style.css
2139 ms
dropit.css
745 ms
prism.css
823 ms
font-awesome.min.css
803 ms
css
1208 ms
jquery.min.js
806 ms
app.js
2870 ms
retina.js
2358 ms
dropit.js
1115 ms
prism.js
1636 ms
hm.js
651 ms
bg.jpg
409 ms
express.png
1490 ms
arrow.png
412 ms
strongloop-logo.png
412 ms
fork-icon.png
4662 ms
DXI1ORHCpsQm3Vp6mXoaTZS3E-kSBmtLoNJPDtbj2Pk.ttf
6597 ms
cJZKeOuBrn4kERxqtaUH3SZ2oysoEQEeKwjgmXLRnTc.ttf
2224 ms
MTP_ySUJH_bn48VBG8sNSpS3E-kSBmtLoNJPDtbj2Pk.ttf
2224 ms
k3k702ZOKiLJc3WVjuplzJS3E-kSBmtLoNJPDtbj2Pk.ttf
3038 ms
hm.gif
327 ms
expressjs.com.cn 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
Image elements do not have [alt] attributes
Links do not have a discernible name
expressjs.com.cn 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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
expressjs.com.cn SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document doesn't use legible font sizes
ZH
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Expressjs.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Expressjs.com.cn 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.
expressjs.com.cn
Open Graph description is not detected on the main page of Express Js. 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: