Tools & Wizards About Us
webinar.instrument.com.cn screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

webinar.instrument.com.cn

Page Load Speed

55.1 sec in total

First Response

5 sec

Resources Loaded

49.4 sec

Page Rendered

622 ms

webinar.instrument.com.cn screenshot

About Website

Welcome to webinar.instrument.com.cn homepage info - get ready to check Webinar Instrument best content for China right away, or after learning these important things about webinar.instrument.com.cn

网络讲堂栏目是仪器信息网最新推出的一款优质栏目，将其定义为“科学仪器行业的百家讲坛” ，到2013年1月为止共成功举办近500场网络会议，还有千余个仪器教学视频。

Visit webinar.instrument.com.cn

Key Findings

We analyzed Webinar.instrument.com.cn page load time and found that the first response time was 5 sec and then it took 50 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.

Performance Metrics

webinar.instrument.com.cn performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value15.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value49.7 s

0/100

25%

SI (Speed Index)

Value45.2 s

0/100

10%

TBT (Total Blocking Time)

Value670 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0.189

65/100

15%

TTI (Time to Interactive)

Value55.3 s

0/100

10%

Network Requests Diagram

5038 ms

topmenu.css

1445 ms

base.css

2182 ms

jquery-1.8.0.min.js

4177 ms

jquery.ui.all.css

781 ms

Our browser made a total of 197 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Webinar.instrument.com.cn, 43% (85 requests) were made to Instrument.com.cn and 26% (52 requests) were made to Simg.instrument.com.cn. The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source Instrument.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 848.3 kB (24%)

Content Size

3.6 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Webinar.instrument.com.cn main page is 3.6 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. 45% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 81.7 kB

  • Original 103.6 kB
  • After minification 100.1 kB
  • After compression 21.9 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. 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 81.7 kB or 79% of the original size.

Image Optimization

-13%

Potential reduce by 376.5 kB

  • Original 2.9 MB
  • After minification 2.6 MB

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, Webinar Instrument needs image optimization as it can save up to 376.5 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 321.6 kB

  • Original 431.3 kB
  • After minification 379.9 kB
  • After compression 109.7 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 321.6 kB or 75% of the original size.

CSS Optimization

-78%

Potential reduce by 68.4 kB

  • Original 88.0 kB
  • After minification 74.7 kB
  • After compression 19.5 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. Webinar.instrument.com.cn needs all CSS files to be minified and compressed as it can save up to 68.4 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 74 (41%)

Requests Now

182

After Optimization

108

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 182 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Webinar Instrument. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

5038 ms

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1445 ms

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2182 ms

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Accessibility Review

webinar.instrument.com.cn accessibility score

51

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

webinar.instrument.com.cn best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

webinar.instrument.com.cn SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Webinar.instrument.com.cn 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 Webinar.instrument.com.cn main page’s claimed encoding is gb2312. 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

webinar.instrument.com.cn

Open Graph description is not detected on the main page of Webinar Instrument. 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: