Tools & Wizards About Us
leitang.net screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

leitang.net

Lei Tang

Page Load Speed

725 ms in total

First Response

136 ms

Resources Loaded

488 ms

Page Rendered

101 ms

leitang.net screenshot

About Website

Welcome to leitang.net homepage info - get ready to check Lei Tang best content for United States right away, or after learning these important things about leitang.net

Homepage of Dr. Lei Tang

Visit leitang.net

Key Findings

We analyzed Leitang.net page load time and found that the first response time was 136 ms and then it took 589 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

leitang.net performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.9 s

100/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

92/100

25%

SI (Speed Index)

Value0.9 s

100/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.051

99/100

15%

TTI (Time to Interactive)

Value2.9 s

96/100

10%

Network Requests Diagram

leitang.net

136 ms

default.css

64 ms

in.js

10 ms

lei_acm.png

125 ms

holder.jpg

129 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 78% of them (7 requests) were addressed to the original Leitang.net, 11% (1 request) were made to Platform.linkedin.com and 11% (1 request) were made to Static.licdn.com. The less responsive or slowest element that took the longest time to load (255 ms) belongs to the original domain Leitang.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 38.3 kB (10%)

Content Size

386.1 kB

After Optimization

347.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Leitang.net main page is 386.1 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. 20% of websites need less resources to load. Images take 196.7 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 16.5 kB

  • Original 22.9 kB
  • After minification 22.1 kB
  • After compression 6.4 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 16.5 kB or 72% of the original size.

Image Optimization

-10%

Potential reduce by 19.5 kB

  • Original 196.7 kB
  • After minification 177.1 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. Lei Tang images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 163.6 kB
  • After minification 163.6 kB
  • After compression 163.6 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

-77%

Potential reduce by 2.3 kB

  • Original 2.9 kB
  • After minification 1.6 kB
  • After compression 662 B

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. Leitang.net needs all CSS files to be minified and compressed as it can save up to 2.3 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lei Tang. According to our analytics all requests are already optimized.

Network Requests Diagram

leitang.net

leitang.net

136 ms

default.css

default.css

64 ms

in.js

in.js

10 ms

lei_acm.png

lei_acm.png

125 ms

holder.jpg

holder.jpg

129 ms

bgholder.jpg

bgholder.jpg

90 ms

lei.jpg

lei.jpg

249 ms

book.png

book.png

255 ms

sprite_connect_v14.png

sprite_connect_v14.png

7 ms

Accessibility Review

leitang.net accessibility score

82

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Links do not have a discernible name

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

leitang.net best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

leitang.net SEO score

58

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leitang.net can be misinterpreted by Google and other search engines. Our service has detected that English 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 Leitang.net main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

leitang.net

Open Graph description is not detected on the main page of Lei Tang. 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: