29.7 sec in total
4 sec
25.6 sec
156 ms
Click here to check amazing Lesson 9 content. Otherwise, check out these important facts you probably never knew about lesson9.com
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Visit lesson9.comWe analyzed Lesson9.com page load time and found that the first response time was 4 sec and then it took 25.7 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
lesson9.com performance score
name
value
score
weighting
Value0.7 s
100/100
10%
Value0.7 s
100/100
25%
Value1.1 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value0.7 s
100/100
10%
3964 ms
1790 ms
1799 ms
65 ms
3790 ms
Our browser made a total of 39 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Lesson9.com, 15% (6 requests) were made to Pagead2.googlesyndication.com and 15% (6 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Res.114px.com.
Page size can be reduced by 95.7 kB (35%)
270.7 kB
175.0 kB
In fact, the total size of Lesson9.com main page is 270.7 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 129.7 kB which makes up the majority of the site volume.
Potential reduce by 26.7 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 9.2 kB, which is 28% 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 26.7 kB or 81% of the original size.
Potential reduce by 11.9 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, Lesson 9 needs image optimization as it can save up to 11.9 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 44.4 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 44.4 kB or 34% of the original size.
Potential reduce by 12.8 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. Lesson9.com needs all CSS files to be minified and compressed as it can save up to 12.8 kB or 69% of the original size.
Number of requests can be reduced by 22 (59%)
37
15
The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lesson 9. 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 as a result speed up the page load time.
www.114px.com
3964 ms
common.css
1790 ms
common.js
1799 ms
adsbygoogle.js
65 ms
logo.jpg
3790 ms
2015102215512670.jpg
20306 ms
2013011019485448.bmp
5531 ms
2014040322392314.jpg
9046 ms
2014051922055707.jpg
2704 ms
2014031611404359.jpg
5407 ms
tab_bg.gif
3913 ms
search1.gif
4212 ms
ca-pub-2207399710212386.js
162 ms
zrt_lookup.html
91 ms
show_ads_impl.js
90 ms
11.jpg
4281 ms
h.js
1504 ms
ads
228 ms
osd.js
19 ms
m_js_controller.js
36 ms
abg.js
49 ms
favicon
86 ms
googlelogo_color_112x36dp.png
83 ms
mobile_unified_button_icon_white.png
31 ms
s
58 ms
x_button_blue2.png
37 ms
Rf2QnA3orEL6Eez56HJgxRuQ77qJyxbefnbSCBE0iUQ.js
11 ms
shell_v2.js
758 ms
bds_s_v2.js
1150 ms
activeview
15 ms
21.gif
2080 ms
hm.gif
1234 ms
h.js
878 ms
logger.js
536 ms
hm.gif
510 ms
bdsstyle.css
628 ms
getnum
1069 ms
is.png
1894 ms
sc.png
372 ms
lesson9.com 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
lesson9.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
lesson9.com SEO score
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lesson9.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Lesson9.com 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.
lesson9.com
Open Graph description is not detected on the main page of Lesson 9. 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: